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Showing posts from February, 2018

2nd FT-101

I'm working on getting the second FT-101E up and running.  I tried to neutralize the finals, but it wasn't acting correctly.  I removed the red label Silvania tubes and put in a yellow label set.  It seemed to neutralize fine.  I checked the output power on 80 meters and it was 100+ watts.  I reset the bias to 60 mA.  I checked the output on 10 meters and I'm only getting 15 watts.  I swapped out the driver tube, and there was no difference. I will have to put the other 101E on the bench and check its power output on 10 meters. Its either something wrong with the unit, or the tubes.

Next plans

I'm going to start on the 2nd FT-101E next.

Uniden mic

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I had this old Uniden CB microphone.  I purchased an amplified element from Adafruit, and installed it.  It sounded great on the SDR.  It produces usable power with a mic gain of only 2.

Shure mic

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My friend let me borrow his Shure 522 mic. I wired it up. I had to crank the mic gain to 10, but I was able to get a usable 100 watts on 80 meters LSB. My friend said it sounded a lot better than the Cobra power mic.