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	<title>W4FT on Amateur Radio &#187; Antennas</title>
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	<link>http://w4ft.com</link>
	<description>One ham&#039;s skewed view of amateur radio and maybe some other topics along the way.</description>
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		<title>ARRL DX SSB Contest 2012 and the new 80 meter Loop!</title>
		<link>http://w4ft.com/2012/03/arrl-dx-ssb-contest-2012-and-the-new-80-meter-loop/</link>
		<comments>http://w4ft.com/2012/03/arrl-dx-ssb-contest-2012-and-the-new-80-meter-loop/#comments</comments>
		<pubDate>Wed, 07 Mar 2012 21:41:33 +0000</pubDate>
		<dc:creator>w4ft</dc:creator>
				<category><![CDATA[Antennas]]></category>
		<category><![CDATA[Contesting]]></category>
		<category><![CDATA[Operating]]></category>
		<category><![CDATA[ARRL DX SSB]]></category>

		<guid isPermaLink="false">http://w4ft.com/?p=555</guid>
		<description><![CDATA[Wow, what a weekend! The ARRL DX SSB contest proved to be a lot of fun and a good test for all of the antennas. Once again, I started a little late, this time due to noise being generated by a piece of equipment that I rely on in the station. Fortunately, I was able [...]]]></description>
			<content:encoded><![CDATA[<p>Wow, what a weekend! The ARRL DX SSB contest proved to be a lot of fun and a good test for all of the antennas. Once again, I started a little late, this time due to noise being generated by a piece of equipment that I rely on in the station. Fortunately, I was able to borrow an older replacement from Alan, AB4OZ (Thanks, Alan.) So, with about an hour delayed start, I opened on 20 meters and kept firing. <span id="more-555"></span></p>
<p>With only 100 watts, running a frequency was not really a viable choice. I tried a couple times during the contest, but after 10 to 15 minutes of calling each time, I made no contacts. So, I abandoned that tactic and went back to search and pounce. This was working. In fact, it was working very well. I ran well after sunset on 20 and 15 and even some more on 10. Finally, I went down to 40 and then 80. Both were productive, 40 more than 80 though. By midnight, I was mostly tuning across stations already worked, so I decided to get some sleep. I&#8217;ll get up about 30 minutes before sunrise and start again.</p>
<p>Overslept. Looked at the clock at about 9am. Sheesh.</p>
<p>OK, caffeine in hand, time to get started again. I spent the day finding new contacts and working 20, then 10 and then 15 meters. I ran through a band then switched to another from 9am till sunset, finally moving down to 40 meters briefly. Even then, I kept going up to the upper bands until I was satisfied I&#8217;d gotten every new station I could find.</p>
<p>Last year, I put in an effort that resulted in a score of 167,040 pts with 322 QSOs and 174 multipliers for 520th out of 1812 in W/VE, or 63rd of 585 in class in W/VE. My goal this year was to double this score. At the halfway point of the contest, I had already passed last year&#8217;s effort.</p>
<p>I kept hammering away into the evening. Finally, around 6:03z, I made one of only two contacts on 160 meters, with 8P5A. This was the only station I contacted on all 6 bands! There were a few that I had on 5 bands, but thanks, 8P5A for six. With this in the log, time for a few hours sleep. At least this time, I&#8217;ll get up before sunrise.</p>
<p>Deja vu. Overslept. 9:30. I think I&#8217;ve been here before.</p>
<p>OK, time to start hammering away again. Sunday was spent searching for stations that were not dupes! They were getting few and far between. Suffice it to say, it was getting to be difficult to make new contacts. Multipliers would be almost nonexistent. So imagine my surprise when I found a new multiplier in Puerto Rico on 14.208!</p>
<p>&#8220;Whiskey Papa Three Romeo, QRZed?&#8221; OK, there&#8217;s a pileup calling, but there&#8217;s a couple hours to go. I&#8217;ll try for a few minutes to get him. If not, I&#8217;ll come back later. Besides, anytime there&#8217;s a big pileup, there are always more stations waiting eagerly just up the band. This tactic, by the way, produced a lot of contacts and multipliers all weekend.</p>
<p>Half an hour later I returned to WP3R, and 10 minutes later, same result. I just couldn&#8217;t break through the pileups. Minnesota was making lots of contacts with him, but not me. I tried on and off several times after this. I went off and grabbed more contacts elsewhere. I was only making about one contact every 10 minutes now.</p>
<p>Finally, with 15 minutes to go, I decided to run the clock out trying to get WP3R. I tried calling as soon as he unkeyed. I tried waiting a few seconds. I tried every trick I knew. Finally, &#8220;Station ending Tango?&#8221; I got lucky and broke through with 7 minutes to go. I will say that while the pileup was typical, WP3R was very smooth, orderly, and efficient. He did a great job of running the contacts fast, with a minimum of words, and almost never had to repeat himself. Great job!</p>
<p>The antennas worked well. I made contacts across most of the world from North Carolina. During various periods, I had a bunch of QSOs with Japan and Hawaii. More surprising were contacts with both European and Asiatic Russia. I hit Australia and New Zealand a couple times. Contacts were common all over Europe, South America, the Caribbean, and Islands off of Africa. Is still need to go back and review my log to see if I have any rare ones.</p>
<p>I was really surprised to see that, in many cases, the 80 meter loop did a better job on all bands than the TA-33 jr 3 element beam on 20, 15 and 10 &#8211; often by about 3 S-units or more. In some cases, it was the other way around, but it is nice to know that I have alternatives!</p>
<p>So what was the final result? Well, you&#8217;ll have to come back after the score submission deadline to see. I will say this. I blew last year&#8217;s score away by more than double!</p>
<p>CQ WW DX is coming soon. Are you ready for round two???? <img src='http://w4ft.com/wp-includes/images/smilies/icon_wink.gif' alt=';-)' class='wp-smiley' /> </p>
<p>73,<br />
W4FT</p>
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		<title>&#8230;And a 160m half sloper followed.</title>
		<link>http://w4ft.com/2012/03/and-a-160m-half-sloper-followed/</link>
		<comments>http://w4ft.com/2012/03/and-a-160m-half-sloper-followed/#comments</comments>
		<pubDate>Wed, 07 Mar 2012 20:55:38 +0000</pubDate>
		<dc:creator>w4ft</dc:creator>
				<category><![CDATA[Antennas]]></category>
		<category><![CDATA[Contesting]]></category>
		<category><![CDATA[Operating]]></category>
		<category><![CDATA[Radios and Equipment]]></category>
		<category><![CDATA[160 meters]]></category>
		<category><![CDATA[half sloper]]></category>

		<guid isPermaLink="false">http://w4ft.com/?p=552</guid>
		<description><![CDATA[While the 80 meter loop wouldn&#8217;t tune up on 160 meters, it was doing a great job as a receiving antenna on the band. (More to follow on the loop antenna&#8217;s performance in later posts.) All this did though was to make me want to put up an 160 meter antenna that much more. I [...]]]></description>
			<content:encoded><![CDATA[<p>While the 80 meter loop wouldn&#8217;t tune up on 160 meters, it was doing a great job as a <em>receiving</em> antenna on the band. (More to follow on the loop antenna&#8217;s performance in later posts.) All this did though was to make me want to put up an 160 meter antenna that much more. I did have a half-sloper for 160 meters sitting in the shack, something I&#8217;d been eyeing for a while, wondering if it would be worth putting up. At least it would be enough of an antenna to scratch that itch!<span id="more-552"></span></p>
<p>Needless to say, it was an itch that I had to scratch, especially with the ARRL DX Contest coming in a couple days! The half-sloper went up last Thursday, suspended about 50 feet up from a line that I shot over a tree. Normally, the ground side is attached to a tower, but the tower can be replaced with a wire attached to a ground rod. This installation uses the latter.</p>
<p>So, initial testing had some surprises, both good and bad. The first good surprise was that the best resonant point was about 1860 kHz, at about 2:1. Not spectacular, but easily handled by the tuner and dead on target in the band. I didn&#8217;t have to trim any wires or make any changes to the antenna. Of course, this was during the day. The real test would come after sundown.</p>
<p>Several hours later, I turned the radio on and tuned up the antenna &#8211; how does 1:1 sound? That was good, but now the bad news. The noise level was about S9+5db or more. It turns out that there&#8217;s something in the local neighborhood that&#8217; wreaking havoc on 160. On 80 meters, it&#8217;s only doing about an S5, and it comes and goes. I spent about an hour trying to find it, but it was either washing out the whole neighborhood or it disappeared every time I started to get close. Oh well, it&#8217;s cold out and I&#8217;ll find it another time.</p>
<p>During the DX Contest, I had run the higher bands and it was time to see what I could find on 160. I started tuning across the band. The pileups were everywhere! I spent about half an hour trying to make contacts, only getting two out of a dozen or more stations that were easily heard. It was a combination of marginal performance of my antenna and the massive pileups on the band.</p>
<p>So, in summary, I think the antenna will prove to be adequate on 160 meters for ragchewing or casual contacts, but not very effective in a contest. I may leave it up, unless I figure out something better.</p>
<p>73,<br />
W4FT</p>
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		<title>80 meter Skywave loop replaces HGSW</title>
		<link>http://w4ft.com/2012/01/80-meter-skywave-loop-replaces-hgsw/</link>
		<comments>http://w4ft.com/2012/01/80-meter-skywave-loop-replaces-hgsw/#comments</comments>
		<pubDate>Mon, 30 Jan 2012 20:06:39 +0000</pubDate>
		<dc:creator>w4ft</dc:creator>
				<category><![CDATA[Antennas]]></category>
		<category><![CDATA[Operating]]></category>
		<category><![CDATA[Radios and Equipment]]></category>

		<guid isPermaLink="false">http://w4ft.com/?p=546</guid>
		<description><![CDATA[Last week, I replaced the HGSW beam with a full wavelength 80 meter Skywave Loop Antenna. The antenna is about 285 feet long and is suspended between four trees at about 80 feet high, roughly shaped as a trapezoid (two parallel sides). It is fed with about 100 feet of 450 ohm ladder line into a [...]]]></description>
			<content:encoded><![CDATA[<p>Last week, I replaced the <a title="High Gain Single Wire Beam to replace 80 meter dipole" href="http://w4ft.com/2010/10/high-gain-single-wire-beam-to-replace-80m-dipole/" target="_blank">HGSW beam</a> with a full wavelength 80 meter Skywave Loop Antenna. The antenna is about 285 feet long and is suspended between four trees at about 80 feet high, roughly shaped as a trapezoid (two parallel sides). It is fed with about 100 feet of 450 ohm ladder line into a 4:1 balun, followed by about 20 ft of coax into the radio.</p>
<p>Reason for change:<br />
While the HGSW beam performed well on 80 meters, it was only marginal on 40 m and not dramatically better than a dipole on the higher bands. Lately though, it has become almost impossible to tune it on 40 meters.<span id="more-546"></span> The MFJ 993b auto tuner sounded like a machine gun, firing all the relays during the tuning process, and often failing to attain an optimal SWR. This condition needed to be fixed!</p>
<p>In addition to the degrading performance, I have always preferred to have an antenna that the radio&#8217;s internal tuner could handle. (Most internal antenna tuners built into radios will not tune an antenna with an SWR above about 3:1.)</p>
<p>Finally, I needed to put something up that was a lot less visible &#8211; a lot less conspicuous. I am nearing the end of a remodel project and will be putting the house up for sale soon, but I don&#8217;t want to have to take down all my antennas while it is for sale.</p>
<p>The Skywave Loop:<br />
Enter the Skywave Loop design. According to my research, this antenna is resonant on all of the upper harmonics, unlike dipoles that are only resonant on <em>odd</em> harmonics. It also gets a lot of wire up in the air. Think about it, an 80 meter loop puts a full wavelength up at 80, 2 wavelengths at 40, 4 at 20 and so on.</p>
<p>Antenna length is not super critical.  Most of the discussion on this antenna say that, for instance on an 80 meter loop, the length of the loop wire can be off by several feet with little or no noticeable effect.  However, it should be near the resonant length of the lowest planned operating band and not simply the longest random length that can be put in the space.  While a random length will work and will tune up, performance is somewhat degraded by comparison.</p>
<p>Loop antennas can be installed in two basic orientations, either in the horizontal plane or the vertical plane. In the horizontal plane, the antenna will have horizontal polarity no matter how it is fed.   If installed in a vertical plane, the placement of the feed point and the shape of the antenna (square, triangle, etc.) will determine the polarization.</p>
<p>Additionally, height above ground will affect takeoff angle for the horizontally mounted loop. The higher the installation, the better.  Also, the antenna need not be in a flat plane.  Some corners can be above or below the general plane of the antenna.  However, if the antenna is installed close to the ground, it can become an NVIS antenna. Of course, this may be what you want &#8211; think local emergency operations on 40 and 80 meters or portable operations, where you want to talk out to up to about 300 miles.  (I&#8217;ll leave it to you to research the heights that will induce the best NVIS performance, but figure about 0.15 to 0.2 wavelengths above ground.)</p>
<p>Loop Skywave Antenna Installed:</p>
<p>So, last week, I spent a warm afternoon outside with my spud gun, launching more strings and ropes over trees in the yard.  It&#8217;s so much easier in the winter when there are no leaves left on the trees.  I put up four suspension points, each with a 3&#8243; pulley to support the loop. None of the support points are fixed at any position along the loop wire, so it is free to move in response to winds. The feed point is about 1/3 of the way between the two eastern supports, and the slack on the overly-long ladder line feeder is pulled away fron the house with a string to keep it vertical and at least 10 ft above ground. (Deer and other wildlife will forage directly under the feedpoint. It&#8217;s their main foraging trail through the area. I need to keep everything high enough so they don&#8217;t snag antlers on feed lines.)</p>
<p>After I instaqlled it, I did find a reference to feedpoint location on</p>
<p>Loop Performance:</p>
<p>I was immediately impressed with the performance in comparison to the HGSW. It tuned up easily on every band from 80 to 10 meters, using only the radio&#8217;s internal tuner. I&#8217;m now able to retire any external tuner.  Reception of signals appears comparable or better. Noise levels seem to be lower too on the lower bands. The next surprise was a comparison to the TA-33jr 3 element beam. On 20 meters and above, the Loop antenna is picking up signals almost as well as the beam antenna! Occassionally, it will do better.</p>
<p>I&#8217;m wasn&#8217;t sure about DX operation yet though.  So far, I haven&#8217;t been hearing much DX on 80 or 40 meters. I was starting to think I had an &#8220;extended distance&#8221; NVIS with a range of about 1500 miles. I just wasn&#8217;t hearing anything beyond North America or the Carribbean. Over days, it just appears that conditions haven&#8217;t been good. In comparing signals with other local hams, I found that I&#8217;m getting as good or better reception as anyone else in the local area. I was also able to make a contact last night with South Africa, so it looks like the antenna is doing just fine.</p>
<p>80 meter loop on 160 meters:</p>
<p>A surprise was waiting here. All the articles say that you can&#8217;t use a loop antenna <em>below</em> the design frequency, so don&#8217;t expect to tune up an 80 meter loop on 160. I can tell you that this is a fact. I tried, and all I saw was an infinite SWR. That means no transmitting on 160. However, I noticed that as a <em>receive</em> antenna, this loop was fantastic.  Previously, with the old antenna, the band was pretty quiet.  Now, the band is loud and crowded. It&#8217;s frustrating, because now I can hear it all, but can&#8217;t transmit!</p>
<p>Hope is not lost though. Those same articles that say the loop will not tune on a lower band also say that the two leads on the ladder line can be connected together and the system behaves like a vertical antenna.  The feed line becomes a vertical and the loop acts as a capacitance hat!  This is something that I will have to try.</p>
<p>Summary:</p>
<p>It was well worth the effort. The Loop Skywave antenna performs well, is somewhat quieter, tunes nicely with the radio&#8217;s internal antenna, and is much less visible above the house. It&#8217;s making operating a much easier and pleasant activity.  I&#8217;ve been able to make contacts with little or no difficulty. (HK0NA, Malpelo Island DXpedition took about 5 minutes effort &#8211; they were working 5 to 15 up and had to find me in the pileup.) I just wish I had room to go to a 160 meter loop!</p>
<p>73,<br />
W4FT</p>
<p>&nbsp;</p>
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		<title>&#8230; and the TA-33 is back up!</title>
		<link>http://w4ft.com/2011/12/and-the-ta-33-is-back-up/</link>
		<comments>http://w4ft.com/2011/12/and-the-ta-33-is-back-up/#comments</comments>
		<pubDate>Thu, 22 Dec 2011 20:30:26 +0000</pubDate>
		<dc:creator>w4ft</dc:creator>
				<category><![CDATA[Antennas]]></category>
		<category><![CDATA[Contesting]]></category>
		<category><![CDATA[Operating]]></category>
		<category><![CDATA[Radios and Equipment]]></category>

		<guid isPermaLink="false">http://w4ft.com/?p=525</guid>
		<description><![CDATA[Well, &#8220;a&#8221; TA-33 is up, not the same one. The upper bands have been heating up all summer and I was getting the urge to do something to improve on my antennas. While the HGSW antenna does a fair job all around, I wanted something better. Back around September, I was set up at a [...]]]></description>
			<content:encoded><![CDATA[<div id="attachment_528" class="wp-caption alignleft" style="width: 3274px"><a href="http://w4ft.com/wp-content/uploads/2011/12/TA33jr.jpg"><img class="size-full wp-image-528" title="TA-33jr" src="http://w4ft.com/wp-content/uploads/2011/12/TA33jr.jpg" alt="" width="3264" height="1840" /></a><p class="wp-caption-text">TA-33jr installed on Chimney Mount</p></div>
<p>Well, &#8220;a&#8221; TA-33 is up, not the same one.</p>
<p>The upper bands have been heating up all summer and I was getting the urge to do something to improve on my antennas. While the HGSW antenna does a fair job all around, I wanted something better. <span id="more-525"></span> Back around September, I was set up at a hamfest with a fellow ham, and I was sitting there, staring at a pile of aluminum about three vehicles down from my spot. I don&#8217;t remember exactly what antenna it was, it had some missing parts, and it wasn&#8217;t all that great a price, but I was getting the urge to get a yagi for the upper HF bands. I had sold off almost everything I had, certainly all the good antennas over a year ago, thinking that I would have long ago had the house up for sale. (The kitchen remodel is just taking forever, but it is almost done now.)</p>
<p>I kept looking at that antenna, trying to justify spending about $125 for it, but I just couldn&#8217;t do it. Finally, my friend spoke up. &#8220;Don&#8217;t you have a bunch of antenna parts at home that you can put something together?&#8221; That&#8217;s when the light bulb went on. It was pretty dim, but it was turned on. It was about that time that someone else walked right past me, with that antenna in hand. Either it was a sign that I shouldn&#8217;t buy it, or that it wasn&#8217;t going to sell until I decided that I didn&#8217;t need it.</p>
<p>We kept chatting about how and where I was going to put it up. I had long ago sold my push-up masts and tower sections. I had sold all my rotors. Heck, I didn&#8217;t think I even had a piece of decent mast to use. Then he started reminiscing about all the chimney mounts he&#8217;d put up years ago in New York. The light bulb started to glow a little brighter.</p>
<p>When I got home, I started checking all of my antenna parts and pieces of aluminum laying around in the basement and the back yard. It was getting slim, compared to the collection I used to have, but I actually found all the parts to a Mosley TA-33 junior! It was in pretty rugged shape. I had to repair one trap and splice a new end onto one element that had snapped off. The boom was bent, and straight is a term that could only be loosely applied to any element. Still, I spent about a week straightening, cleaning and repairing, but I got it put together in the back yard.</p>
<p>Next, a trip to Trader Joe&#8217;s followed. This guy has several tons of surplus hardware &#8211; brackets, components, antenna parts, cable, and on and on. A Saturday afternoon going through his place looking for needed parts is always fun. As it turned out, he had several chimney mount kits that looked like they were new in 1960. Perfect! That and a couple of pieces of aluminum took care of several needs.</p>
<p>What about a rotor? I had one, but after a day of testing and attempted repairs, it turned out that the gearing was too worn to be reliable. With no hamfests in the near future and contests comming up, I went with a standard TV rotor from the local Lowe&#8217;s.</p>
<p>Time to put the system up. There was a surprise waiting for me though. I checked the chimney mount kit and found that it came wioth 12 foot long straps to wrap the chimney. Unfortunately, the Chimney was about 15 feet around the outside! Hmmm. No problem, I just made a quick trip to Lowe&#8217;s again(seems like I go there every day), and picked up an 8 ft threaded rod and a couple coupler nuts! I cut the threaded rod in two, and easily took up the gap.<br />
<br />
<a href="http://w4ft.com/wp-content/uploads/2011/12/chimney.jpg"><img class="size-large wp-image-530" title="chimney" src="http://w4ft.com/wp-content/uploads/2011/12/chimney-1024x577.jpg" alt="" width="1024" height="577" /></a></p>
<p>With the chimney mount problem solved, everything else followed easily. I had a couple pieces of mast pipe, including an 8 ft piece that filled the bill nicely. In an hour an a half, we had the antenna up and working! Initial testing showed a good match that the radio&#8217;s internal tuner could make perfect on any band from 20m to 10m.</p>
<p>What about antenna height? The TA-33 jr. is mounted about 6 feet above the ridge of the roof. That&#8217;s about 20 feet above the front yard or 30 feet above the back yard. (The house is on the side of a hill.) While higher may (or may not) be better, 20 to 30 feet will do a good job!</p>
<p>So how has it worked? I&#8217;ve run the CQ WW, the ARRL November Sweeps and 10 meter contests since then. In every one, the 3-element beam has been a champ. It has gotten me QSOs from North Carolina to Australia, New Zealand and Japan. I&#8217;ve made contacts with it on almost every continent (still need Antarctica) In comparison with the HGSW, the beam wins hands down. During the 10 meter contest, I made contacts with most of Europe, the Carribbean and South America. I made contacts with both European and Asiatic Russia. The US west coast was easy, as was Alaska. As expected, the east coast and nearby states were almost unheard.</p>
<p>In a word, putting up the 3 element, 20/15/10 meter beam antenna was well worth the effort at minimal cost! If you can, go for it!</p>
<p>73,<br />
W4FT</p>
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		<title>CQ WW WPX SSB 2011 &#8211; time for another antenna!</title>
		<link>http://w4ft.com/2011/10/cqww-ssb-is-coming-time-for-another-antenna/</link>
		<comments>http://w4ft.com/2011/10/cqww-ssb-is-coming-time-for-another-antenna/#comments</comments>
		<pubDate>Tue, 18 Oct 2011 20:05:57 +0000</pubDate>
		<dc:creator>w4ft</dc:creator>
				<category><![CDATA[Antennas]]></category>
		<category><![CDATA[Contesting]]></category>
		<category><![CDATA[Operating]]></category>

		<guid isPermaLink="false">http://w4ft.com/?p=498</guid>
		<description><![CDATA[It&#8217;s October!  Are you ready for the CQ WorldWide SSB contest at the end of the month? Link to CQ WW WPX Contest  I&#8217;ve been sitting around here trying to figure out what I want to do about the CQ WW SSB contest.  I&#8217;ve already challenged one of the local hams and might throw down [...]]]></description>
			<content:encoded><![CDATA[<p>It&#8217;s October!  Are you ready for the CQ WorldWide SSB contest at the end of the month?</p>
<p style="text-align: center;"><a href="http://www.cq-amateur-radio.com/cq_contests/cq_ww_wpx_contest/index_cq_ww_wpx_contest.html">Link to CQ WW WPX Contest</a> </p>
<p>I&#8217;ve been sitting around here trying to figure out what I want to do about the CQ WW SSB contest.  I&#8217;ve already challenged one of the local hams and might throw down the gauntlet in front of a few more.  But do I want to make any changes to the shack?  I still have the HGSW beam hanging in the trees above the houes (see earlier posts), but I&#8217;ve been hearing a lot about the upper bands coming to life.  Wouldn&#8217;t it be nice to have a tri-band yagi up, at least for comparison?  Maybe it&#8217;ll help me get more contacts this year. These thoughts created an itch that I just have to scratch!<span id="more-498"></span></p>
<p>Okay, so I didn&#8217;t want to invest a ton of money into a new antenna.  That means working with whatever I can find around the house.  I thought that I&#8217;d sold everything off at hamfests, but after looking around, I found most of the parts to a Mosley TA-33 junior. To be honest, it is in pretty rough condition.  The bo0m is about as straight as a dog&#8217;s hind leg, even though it&#8217;s been straightened, and one of the reflector elements had about a foot broken off the end. Otherwise, everything is in worn but usable condition.  The traps don&#8217;t show any opens, and everything seems to be there. </p>
<p>Next problem &#8211; how do I put it in the air and turn it?   I did sell all my push-up masts and tower sections.  At least I still have a piece or two of mast laying around.  In the past, I&#8217;ve had push-up masts buckle while putting everything in the air, and at best, only cleared the top of the house by a few feet. AB4OZ came up with an idea &#8211; try a chimney mount installation.  This immediately puts the antenna about 8 feet above the <em>top</em> of the house, and has the advantage of being cheap.  I found a mount kit for about 8 bucks at a local CB/ham shop and had to add in another 8 bucks worth of hardware to reach all the way around a fireplace chimney with threaded rod and other hardware. (The kit had 12&#8242; straps to go around, but the perimeter of the chimney is more like 16&#8242;.)</p>
<p>Finally, I need to be able to turn the antenna.  I had an old rotor that I picked up at a hamfest for a few bucks, but when I tested it, I found the gears were worn out. Crap!  I also sold the TV rotor I bought for about $50 several years ago.  Double crap!  Oh well, time to buy a new one.  Since it&#8217;s a relatively lightweight antenna, I figure a TV rotor will work fine.  Of all places, Lowe&#8217;s had what I needed at about the best price.  It was the Phillips rotor with the newer control box &#8211; memories, a remote control, and an approximate bearing indicator. (Shows bearing  / 10 ) At $75, it&#8217;s a little painful, but better than a couple hundred for a tail twister.</p>
<p>So that&#8217;s where it stands.  I have all the parts together in the basement.  Over the next few days, I&#8217;ll be piecing it all together.  Maybe this weekend, you&#8217;ll hear me on the higher HF bands on a TA-33.  I&#8217;ll let you know how it works out.</p>
<p>And to the local hams in Raleigh, consider this your challenge to beat my score in the CQ WW SSB contest at the end of the month!</p>
<p>73,</p>
<p>W4FT</p>
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		<title>CQWW SSB on the HGSW and a new Water Tank!</title>
		<link>http://w4ft.com/2010/12/cqww-ssb-on-the-hgsw-and-a-new-water-tank/</link>
		<comments>http://w4ft.com/2010/12/cqww-ssb-on-the-hgsw-and-a-new-water-tank/#comments</comments>
		<pubDate>Wed, 01 Dec 2010 18:40:50 +0000</pubDate>
		<dc:creator>w4ft</dc:creator>
				<category><![CDATA[Antennas]]></category>
		<category><![CDATA[Contesting]]></category>
		<category><![CDATA[Operating]]></category>

		<guid isPermaLink="false">http://w4ft.com/?p=335</guid>
		<description><![CDATA[Ever try to operate a contest and change a hot water heater at the same time?  Last month brought the CQ Worldwide SSB 2010 contest, presenting an opportunity to test out the High Gain Single Wire Beam antenna (HGSW) described in my last blog entry.  I wasn&#8217;t sure what to expect, but I thought I&#8217;d give it [...]]]></description>
			<content:encoded><![CDATA[<p>Ever try to operate a contest and change a hot water heater at the same time? </p>
<p>Last month brought the CQ Worldwide SSB 2010 contest, presenting an opportunity to test out the High Gain Single Wire Beam antenna (HGSW) described in my last blog entry.  I wasn&#8217;t sure what to expect, but I thought I&#8217;d give it some exercise.  In spite of losing a day to help a fellow ham with a broken water heater, I managed to put in several hours of happy contesting, covering every band to some degree.  The result was a log with about 242 contacts in 64 countries and 23 zones for a score of over 111,000 points.  Not a bad effort, given that I wasn&#8217;t really trying that hard.<span id="more-335"></span></p>
<h5>Conditions, like appearances, can be deceiving.</h5>
<p>On Friday, my sense was that the antenna performed great on 80, but not well on 160 or 40.  It was too late to assess 20. Somehow, I expected better.</p>
<p>My effort started late Friday night.  Hey,  I was tired from taking that water heater out, so I wasn&#8217;t really in the mood to work a contest. But finally, I couldn&#8217;t resist the urge any longer. Around 11:30 pm local time, the radio came to life and I started looking around. Twenty meters had already gone dead, so I dropped down to 80 meters.  A quick scan showed a target rich environment.  I spent a fair amount of time making contacts from all around North and Central America and Europe. Contacts were easy and getting through pileups was a quick effort.  Having made a pass through the band, it was time for a change.</p>
<p>Forty meters had different results. Like 80, I was hearing stations from North America and Europe again, but they weren&#8217;t hearing me quite as well.  Pileups meant doing battle with everyone else trying to make the contact and results were mixed. In spite of the difficulty, I still made a full pass through the band with fair success. Next, I went on to 160 meters.  Hey, nothing ventured, nothing gained.  Well I didn&#8217;t gain much.   If 40 was marginal, 160 was a disaster.  I managed only two contacts on the band.  Fortunately, most people were on the higher bands, but I&#8217;d had enough for the night.  Time for some sleep.</p>
<p>Saturday morning was spent putting a new water heater in (I really, really want to make sure my friends have access to hot showers. <img src='http://w4ft.com/wp-includes/images/smilies/icon_wink.gif' alt=';-)' class='wp-smiley' />    ), so I didn&#8217;t get back to the contest until around an hour before sunset. I started with a few contacts on 20 &#8211; zones 16, 11, 7 and 9- but the band was rapidly dying for me already.  I operated sporadically for about 6 hours, making roughly another 34 contacts &#8211; mostly on 40 meters.  This time, I added three Northern Africa stations &#8211; CR3, CN3 and EF8, all on 40 meters.  Oh yeah, I added another 160 contact.</p>
<p>My perception was that 80 was solid, but the antenna wasn&#8217;t so hot on 40 or 160.  I wasn&#8217;t too sure about 20 either (the HGSW is designed for 20 meters.) I&#8217;m beginning to wonder if the height is the real controlling factor here. I&#8217;ve had several wire antennas up in the trees &#8211; trap dipoles, simple 80 meter dipoles, etc. &#8211; all about 65 to 85 feet above ground.  It seems like they all did well on 80 meters, but marginally on 40 and really bad on 160.  The only antenna to have even marginal performance on 160 was the B&amp;W 160 thru 20 trap dipole.  I&#8217;ll chalk the performance on 160 to the nature of the top band in general. The band just takes a well-tuned and installed antenna to get good results.  Honestly, I haven&#8217;t had one of those up yet for the band.</p>
<p>On 80 meters, almost every antenna I&#8217;ve put up has had good to excellent performance.  The HGSW falls into the good category, maybe excellent, but I haven&#8217;t really had enough time on the air to be certain.  I do know that making contacts and busting through pileups is easy on this band.  I&#8217;m wondering if the antenna height is the real secret here.  I&#8217;ve been installing antennas at 65 to 85 feet, with the current HGSW at about 80 feet.  Based on some reading, that looks like the sweet spot for 80 meter antennas.</p>
<p>So the result looks to be good overall performance, better on some bands, not as good on others.  More to follow in later blogs.</p>
<p>Oh yeah, my friend is enjoying his hot showers again, all without a single leaky pipe!</p>
<p>73,<br />
W4FT</p>
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		<title>High Gain Single Wire Beam to replace 80m dipole</title>
		<link>http://w4ft.com/2010/10/high-gain-single-wire-beam-to-replace-80m-dipole/</link>
		<comments>http://w4ft.com/2010/10/high-gain-single-wire-beam-to-replace-80m-dipole/#comments</comments>
		<pubDate>Fri, 22 Oct 2010 19:33:18 +0000</pubDate>
		<dc:creator>w4ft</dc:creator>
				<category><![CDATA[Antennas]]></category>
		<category><![CDATA[Operating]]></category>
		<category><![CDATA[Radios and Equipment]]></category>

		<guid isPermaLink="false">http://w4ft.com/?p=306</guid>
		<description><![CDATA[ It&#8217;s a good practice to put an analyzer on your antenna every now and then, just to make sure that all is well.  Recently, that&#8217;s exactly what I did. I&#8217;ve had good success with an 80 meter dipole suspended between two trees at about 80 feet.  Well, I sorta cheated.  The space between trees is only [...]]]></description>
			<content:encoded><![CDATA[<div class="mceTemp"><a href="http://w4ft.com/wp-content/uploads/2010/10/antenna2.jpg"><img class="alignleft size-full wp-image-314" title="20m High Gain Single Wire Antenna" src="http://w4ft.com/wp-content/uploads/2010/10/antenna2.jpg" alt="" width="606" height="312" /></a> It&#8217;s a good practice to put an analyzer on your antenna every now and then, just to make sure that all is well.  Recently, that&#8217;s exactly what I did. I&#8217;ve had good success with an 80 meter dipole suspended between two trees at about 80 feet.  Well, I sorta cheated.  The space between trees is only about 100 ft, so I had about 15 feet on each end hanging down.  Imagine my surprise when the best I could get was about a 9:1 match on any frequency. This is bad.  Time to pull the antenna down again! </div>
<div> OK, but maybe it&#8217;s time to try something different. I had a pretty good experience with a 15 meter version of the <a title="A High Gain Single Wire Antenna" href="http://www.arrl.org/files/file/protected/Group/Members/Technology/tis/info/pdf/QST_Jul_2009_p38-39.pdf">High Gain Single Wire Antenna </a>described in the <a title="A High Gain Single Wire Antenna, ARRL QST July 2009" href="http://www.arrl.org/files/file/protected/Group/Members/Technology/tis/info/pdf/QST_Jul_2009_p38-39.pdf">July 2009 issue of QST</a> (members only area of <a href="http://www.arrl.org">www.arrl.org</a>), so I decided to build and install the 20 meter version.  <span id="more-306"></span>Assembly took me a couple of leisurely hours of effort to assemble all of the parts, most of which came from an 80 meter double extended zepp from field day. (What a long monster that was, but not really worth the effort &#8211; a story for another day.)  I had it up later the same day, but didn&#8217;t have time to test it.  After all, I had to go to the local club&#8217;s monthly dinner. </div>
<p style="text-align: left;">Testing began the next day, but the results weren&#8217;t good.  SWR readings were in the 9:1 or higher range.  So what did I do wrong?   I had installed the antenna at about 75 to 80 feet up, with the last 15 feet on either end hanging down because of space limitations.  I thought about it for a while and decided that the likely culprit was the feed line, or at least, it&#8217;s a starting point. Another issue might be the hanging ends.  Anyways, I pulled the antenna back down and replaced the RG-8 coax with 100 ft of 450 ohm ladder line.  I also put a 4:1 balun on the end of the feed line.  This gave me moderate improvement on some bands:</p>
<table style="text-align: left; width: 300px; margin-left: auto; margin-right: auto;" border="1" cellspacing="2" cellpadding="2">
<tbody>
<tr>
<td style="vertical-align: top; text-align: center; background-color: #c0c0c0;">Frequency<br />
(Mhz)</td>
<td style="vertical-align: top; text-align: center; background-color: #c0c0c0;">SWR<br />
reading</td>
</tr>
<tr>
<td style="vertical-align: top; text-align: center;">1.9</td>
<td style="vertical-align: top; text-align: center;">&gt; 31:1</td>
</tr>
<tr>
<td style="vertical-align: top; text-align: center;">3.8</td>
<td style="vertical-align: top; text-align: center;">6.6:1</td>
</tr>
<tr>
<td style="vertical-align: top; text-align: center;">7.2</td>
<td style="vertical-align: top; text-align: center;">&gt;31:1</td>
</tr>
<tr>
<td style="vertical-align: top; text-align: center;">10.1</td>
<td style="vertical-align: top; text-align: center;">&gt;31:1</td>
</tr>
<tr>
<td style="vertical-align: top; text-align: center;">14.38</td>
<td style="vertical-align: top; text-align: center;">2.7:1 (best)</td>
</tr>
<tr>
<td style="vertical-align: top; text-align: center;">28.3</td>
<td style="vertical-align: top; text-align: center;">3.1:1</td>
</tr>
</tbody>
</table>
<p> </p>
<p>I should point out that there was a change in design by the author.  The January 2010 edition of QST has a letter from the antenna&#8217;s designer and the author of the original article, Rob Wilson, AL7KK.  Rob had found that simply removing the inductor at the feed point resulted in a close match to 50 ohm coax, so a direct feed was possible.  In emails that I exchanged with Rob, he also suggested that feeding with 80 ft. or 100 ft. of 450 ladder line would yield good results on most bands.  Given the performance we had with two of these antennas cut for different bands, I believe they will operate nicely on all bands.</p>
<p>So here I sit, with mixed results on match, but a pretty good first glance at the receive on this antenna.  I just haven&#8217;t had a chance to tinker or do much operating yet.  I&#8217;ve seen this antenna in action at Field Day and it produces good results.  I&#8217;m just not convinced that I&#8217;ve really done it justice in this installation.  I still need to throw an antenna tuner in line and test it.  When I get more info, I&#8217;ll pass it along.</p>
<p>73,<br />
W4FT</p>
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		<title>What goes up&#8230;.  the TA-33M is back down.</title>
		<link>http://w4ft.com/2010/03/what-goes-up-the-ta-33m-is-back-down/</link>
		<comments>http://w4ft.com/2010/03/what-goes-up-the-ta-33m-is-back-down/#comments</comments>
		<pubDate>Sun, 21 Mar 2010 17:21:36 +0000</pubDate>
		<dc:creator>w4ft</dc:creator>
				<category><![CDATA[Antennas]]></category>
		<category><![CDATA[Gear For Sale]]></category>

		<guid isPermaLink="false">http://w4ft.com/?p=156</guid>
		<description><![CDATA[Well, I said it was temporary.  On Friday, I took the TA-33M down.  As soon as I can get the pieces all together and figure out an asking price, I will put it up for sale.  If nobody buys it earlier, I&#8217;ll have it at the RARSFest 2010 hamfest at the Raleigh, NC State Fairgrounds [...]]]></description>
			<content:encoded><![CDATA[<p>Well, I said it was temporary.  On Friday, I took the TA-33M down.  As soon as I can get the pieces all together and figure out an asking price, I will put it up for sale.  If nobody buys it earlier, I&#8217;ll have it at the RARSFest 2010 hamfest at the Raleigh, NC State Fairgrounds on April 3.   Along with the standard 3-band TA-33, I have the 17m+12m driven element and the 40 meter extension kit.  I haven&#8217;t decided if I will sell it as a complete package or three seperate packages.  There&#8217;s a used Rohm push-up mast too.  More to follow.<br />
73, <br />
Cliff W4FT</p>
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		<item>
		<title>Time to replace a bad antenna &#8211; What would you do?</title>
		<link>http://w4ft.com/2009/12/time-to-replace-a-bad-antenna-what-would-you-do/</link>
		<comments>http://w4ft.com/2009/12/time-to-replace-a-bad-antenna-what-would-you-do/#comments</comments>
		<pubDate>Wed, 23 Dec 2009 00:09:30 +0000</pubDate>
		<dc:creator>w4ft</dc:creator>
				<category><![CDATA[Antennas]]></category>
		<category><![CDATA[Operating]]></category>

		<guid isPermaLink="false">http://w4ft.com/?p=102</guid>
		<description><![CDATA[It looks like my B&#38;W 160-20 trap dipole is having some serious issues.  I noticed during the Nov. Sweeps contest that contacts on 40 meters were almost impossible, but 20 and 80 meters was working like a charm.  When I put the antenna analyzer on it, I discovered something disturbing.  Everything below 20 meters was 6:1 [...]]]></description>
			<content:encoded><![CDATA[<p>It looks like my B&amp;W 160-20 trap dipole is having some serious issues.  I noticed during the Nov. Sweeps contest that contacts on 40 meters were almost impossible, but 20 and 80 meters was working like a charm.  When I put the antenna analyzer on it, I discovered something disturbing.  Everything below 20 meters was 6:1 or worse! ( The match on 20 meters is still around 1:1)  Today, I pulled the antenna down and started checking it.  Everything looked ok mechanically, so I started checking for opens across the traps. Results were inconsistent, and not repeatable on the ohmmeter.</p>
<p>To make a long story short, OXIDATION!  I should have soldered all the connections instead of depending on just the mechanical connection of twisted wires.  The oxidation looks to be disrupting the antenna connections between the wires and the traps.  One of the 40 meter traps may be bad too. </p>
<p>Now, I&#8217;m thinking that it is time to replace this antenna with something else for 160 through 40 meters. 160 is a bonus, but 80 and 40 are absolutely required.  I have 20 and up covered with a yagi.    I&#8217;ve been thinking about loops, dipoles, etc., but this probably needs to be some kind of wire antenna.  I do have several trees to serve as supports.</p>
<p>Throw out your suggestions!  What would you go with?</p>
<p>73,   W4FT</p>
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		<title>Temporary Mosley TA-33-M WARC Installation</title>
		<link>http://w4ft.com/2009/10/temporary-mosley-ta-33-m-warc-install/</link>
		<comments>http://w4ft.com/2009/10/temporary-mosley-ta-33-m-warc-install/#comments</comments>
		<pubDate>Fri, 09 Oct 2009 20:18:31 +0000</pubDate>
		<dc:creator>w4ft</dc:creator>
				<category><![CDATA[Antennas]]></category>
		<category><![CDATA[Operating]]></category>

		<guid isPermaLink="false">http://w4ft.com/?p=80</guid>
		<description><![CDATA[  I&#8217;ve been remodeling my house for a while now, so the radio shack and the antennas have seen frequent changes and moves.  Earlier this summer, I found myself wanting more than just my B&#38;W 160-20 trap dipole hanging in the trees.  This would be a temporary install only. Sometimes, you just have to scratch [...]]]></description>
			<content:encoded><![CDATA[<p> </p>
<div class="wp-caption alignleft" style="width: 610px"><img title="Almost there!" src="http://w4ft.com/wp-content/uploads/2009/10/AntGoingUp.JPG" alt="TA-33M antenna stack halfway up!" width="600" height="450" /><p class="wp-caption-text">TA-33M and Cushcraft 11 element Yagi are halfway up!</p></div>
<p>I&#8217;ve been remodeling my house for a while now, so the radio shack and the antennas have seen frequent changes and moves.  Earlier this summer, I found myself wanting more than just my B&amp;W 160-20 trap dipole hanging in the trees.  This would be a temporary install only. Sometimes, you just have to scratch an itch.   <img title="More..." src="http://w4ft.com/wp-includes/js/tinymce/plugins/wordpress/img/trans.gif" alt="" /><span id="more-80"></span></p>
<p>Conveniently, I had not one, but two TA-33M antennas in the basement, along with the add-ons for 17 and 12 meters and for 40 meters. Over in another corner was a Cushcraft 147(?) 11 element 2 meter beam, along with a cheap but functional rotor. Looked like I had most of the pieces.  All I needed was something to put the antennas on.  A quick trip to a local supplier netted me a 50 ft. Rohn push-up pole.  That&#8217;ll do it.</p>
<p>Over the next few days, I built up the antenna stack on the ground.  First, the TA-33M with the 12m and 17m driven element. Next, I assembled all the other components into the stack &#8211; an 8 ft. mast, the rotor, the TA-33M and the Cushcraft 2m Yagi.  Add in coax, rotor cable, guy ropes, and tiedown straps, and that makes the full set.  Everything checked out for SWR, so it was time to put it up.</p>
<p>As they say, necessity is the mother of invention, or in this case, creativity.  The next problem was how to get the assembly up. Plan A was to stand it up with the mast extended only enough to clear any low items that would interfere with the antennas &#8211; like the house.  But what&#8217;s the best way to stand the stack up?  Fortunately, I had a set of compound pulleys and a lot of rope to go with it.  I through a heavy line over the house, tied it to a tree on the other side and hooked one of the pulleys to the other end.  With about an 8 to 1 advantage, it was fairly easy to stand the whole assembly up.</p>
<p>I figured that once it was vertical, it should be easy enough to extend the mast straight up.  Bad idea. First, I should have had a clue from the weight of the stack as I was standing it up.  It actually went to vertical easily enough, but extending it was a lot tougher.  Raising about 80 lbs straight up on the edge of a deck isn&#8217;t that easy.  Also, I didn&#8217;t think I needed guy wires &#8211; worse idea.  I was able to extend it up, but while securing everything, the top heavy antenna buckled one of the mast sections and the whole thing folded over.  Ugh!  All you can do is watch it fall and either laugh or cry!</p>
<p>The resulting damage was moderate, but not insurmountable.  I had to cut about 3 ft. out of one section of the telescoping mast, so now my 50 footer was more like 44 ft. Next, the antenna needed attention.  Two element ends were buckled and there was some minor bending.  Remember that I said TWO TA-33-M antennas?  Spare parts!  I spent a couple more days reworking and reassembling everything and thinking of a new way to put it all up.  This time though, a new plan &#8211; maybe riskier in one way but more stable in others.  Instead of standing it up and then extending it, I decided to extend the mast to about 35 ft. on the ground and stand the whole thing up with guys already attached.  The pulley system would bring it up and the guy lines would keep it from falling past vertical or off to one side.  By shortening the mast, it put extra overlap between mast sections to strengthen it.  I just needed to go slow and keep everything straight.  </p>
<p><img title="AntennaUp" src="http://w4ft.com/wp-content/uploads/2009/10/AntennaUp.jpg" alt="TA-33-M and Cushcraft 2meter 11 element temporarily installed." width="768" height="800" /></p>
<div class="mceTemp">A good plan, but in practice, the pull weight from near horizontal was almost over the capacity of the pulley system.  It also kept collapsing the mast until I pinned the sections in place.  Finally, it went up. Over a couple hours, I stood it up, set all the guys, and got it as straight as I could.  The yellow guy ropes are secured at ground level with ratcheting tie-downs to adjust tension and mast position. It&#8217;s been in place now for a few months, and the system is holding up well, even against high winds (about 50 mph max so far.)  See for yourself. </div>
<p>Did I mention that I did all of this by myself? Not a practice I recommend, but sometimes, it&#8217;s the only way to get the job done.</p>
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