Do you have an MFJ-434 attached to your Yaesu FT-1000MP, but your microphone doesn’t work well or the radio starts retuning downward when you engage the EDSP? Then it’s time to check those 434 jumper settings!
For years, I’ve had an MFJ-434 voice keyer that I wanted to use with my Yaesu FT-1000MP during contests. Sometimes, it would work fine. Other times, the combination of the radio and the keyer would do strange things. Often, I would just disconnect the keyer and set it aside – I wasn’t in the mood to troubleshoot during a contest. Afterwards, once I recovered, I wasn’t really in the mood to troubleshoot the problem. I spent a lot of time searching the internet for a solution, but never found anything that worked. In fact, I didn’t find much on the topic at all. Anyways, with Field Day approaching, combined with the relay problem that I had (see http://w4ft.com/2010/06/yaesu-ft-1000mp-transmit-relay-replacement/ ) I decided to spend some time really digging into this one. The good news: I found a solution – the correct jumper settings for the MFJ-434 to work with the FT-1000MP! Read more…
Failed RL6016 transmit relay - the black component at the top edge.
What do you do when your Yaesu FT-1000MP, your main base HF rig, that’s been a trusted partner for over a decade, just doesn’t want to transmit? As if antenna problems weren’t enough, now I have to perform surgery on my old friend. Fortunately, this is a story with a happy ending.
For a while now, I’ve been experiencing some difficulty tuning my Yaesu FT-1000MP. I’ve been trying to figure out how to resolve this problem, but was still able to operate reasonably well, so I carried on. Anyways, on certain band segments, the internal tuner would hunt around for a long time but wouldn’t be able to tune the antenna for the frequency. Sometimes, tuning up or down the band, letting the tuner lock in and then coming back would work, but it was annoying. Recently, that changed completely. The radio would no longer tune at all. Instead, it would just show an infinite SWR and the protection circuit would cut output power to milliwatts, as designed. This is what happened when the radio was tuned to the antenna resonant frequencies, so it isn’t a mismatch issue. (Yes, I know that most internal tuners only function if the SWR is 3:1 or less.) Read more…
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