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Search results

  1. MKwrench

    PC122 AM output clipping?

    Wow! Thanks!
  2. MKwrench

    PC122 AM output clipping?

    33K was way too much, I ended up with a 10K in there, I tweeked between AM power who gave me the max and dead key, and the limiter who corrected the clipping, there were a trade off between the two. I ended up with a 3/4W carrier and a nice clean 16W PEP and plenty of growth even after the RM203...
  3. MKwrench

    PC122 AM output clipping?

    I get most of my radios in non working condition, with blown traces, other weird mods, shorted caps, missing parts, smoked transistors and/or mystery issues. This one was full of bad solder joints, melted L26 top with missing core, and had a weird talkback mod along with some blown traces. The...
  4. MKwrench

    PC122 AM output clipping?

    Here is with a 33K across the diode resistor combo, now I can fix Frankensteins head, but it it's weird and chunky looking through the cheap amp. Here's some video.
  5. MKwrench

    PC122 AM output clipping?

    https://photos.app.goo.gl/dzyvvgWVTEon3Cug8
  6. MKwrench

    PC122 AM output clipping?

    I'll try to keep it short. Uniden PC122 I tried a diode in series with R186 to lower the AM deadkey to use with a small amp. On the meter It worked great, with 1W deadkey, 9W Avg/18W PEP. On the scope I can remove all negitive carrier pinch but, even with the limiter all the way up I still...
  7. MKwrench

    Different output with bottom cover off?

    I cleaned the crud out of there and dried it with compressed air, and found no change. I did however notice that when I held a metal spare antenna mount over the area with the final and L14 the issue would appear again. I assumed it was L14s inductance changing the output. I removed L14 cleaned...
  8. MKwrench

    Different output with bottom cover off?

    Here is a link to a video I made to describe the issue: https://photos.app.goo.gl/k2RJ2Z1LfB9E2HHw6
  9. MKwrench

    Different output with bottom cover off?

    Thanks both of you I'll give those board screws a feel tomorow. I'm thinking about an SDR with adjustable display for looking at output spectrum. It would be even better if someone local had one streaming, but no luck with that yet....
  10. MKwrench

    Different output with bottom cover off?

    Hello everyone, this is my 1st thread, it's going to be more question with a small introduction. All of my radios were either given to me, or purchased for a few dollars. They were mostly basket cases that were replaced by something more modern and some from retired Truckers. Every time I...