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Search results

  1. M

    Rm Italy KL-503 watts vs amps

    I put a 15 pf in mine, removed the 3.3. It seems ok now.
  2. M

    RM Italy KL 503 Crunchy

    Neither
  3. M

    Any AM Deadkey Input Difference for the RM Italy KL 503 vs KL 503HD?

    The HD version still has a driver it. Just has a -7db attenuator installed.
  4. M

    RM Italy KL 503 Crunchy

    As far as this amp sounding bad on SSB. Remove the 3.3 pf capacitor where the so239 is on the input side C34 & put a 15 pf cap in its place. Problem solved. I noticed my meter wasn’t responding to my words on SSB & it sounded horrible around town. A friend 20 miles away could barely hear it...
  5. M

    Any info on old Stam Comm SC-50T-BIL ??

    They are class C for SSB use. I have one that peaks 200 watts with 15 swing on SSB. On AM I use a 2 watt carrier & swing 15 , gives me 40 watt dead key & swings 200 with 15 pep swing. The tuned input on mine is perfect, 1.2 SWR. Mine has adjustable tuning on the input & output transformer. I...
  6. M

    RM Italy KL 503 Crunchy

    The bias does change in ssb mode. The transistors slightly turn on in ssb mode to keep your voice from clipping. Then a delay is added too with a capacitor.
  7. M

    Anytone AT 6666 150 watts?

    I’m sure after a person buys one they never do again. It’s a viscous cycle. Then another person watches this bogus video & that sells another. After that cycle of about 100 radios just guessing out of the North American population the damage is done. He made his money & then the new model comes...
  8. M

    Texas Star 350HDV

    I tell thousands this but they have to learn.
  9. M

    Texas Star 350HDV

    20 volts will kill it. Only go to 15.
  10. M

    Texas Star 350HDV

    Unless he is on SSB.
  11. M

    Texas Star 350HDV

    That’s RMS, check on a bird with a peak kit installed.
  12. M

    Texas Star 350HDV

    Not a illusion, you need to research a pair of Toshiba 2sc2879 with 20 pep into them on ssb with 14.8 volts. Pep on bird 43 peak kit installed.
  13. M

    Texas Star 350HDV

    That’s correct.
  14. M

    Texas Star 350HDV

    It’s only to much on the variable, burn it up. Green am button out 4 watts is fine. A dx350 does peak 350-400 pep on SSB. Watch them on YouTube on bird 43 with a peak kit installed.
  15. M

    Can someone explain why anyone would use a SD1446 instead of MRF455?

    Because 455 are 60 watts & 1446 are 90.
  16. M

    4 X 1446 = 750/800 WATTS

    I bet there was no replies on that asinine price. They are 90 watts in class C .
  17. M

    power output question about the sd1446

    90 watt
  18. M

    power output question about the sd1446

    They are rated @90 watts each
  19. M

    Carl Built 400HDHG Amplifier / 2SC2879 Wattage Help

    They want you to run it higher so when it blows they have a chance of selling you other stuff. I never punish my equipment, 650 watts to 1000 watts isn’t a s unit difference so why blow your shit up? This hobby is to have conversations with others local or distance on ssb. I’ve talked to people...
  20. M

    Understanding amp designs: Texas Star

    Yes they are. If they wasn’t they wouldn’t be clean on SSB.
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