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26OD004's latest activity

  • 2
    26OD004 replied to the thread 4 x HG 2879 advice.
    They were the regular type, not the "C" variant
  • 2
    26OD004 reacted to nomadradio's post in the thread 4 x HG 2879 advice with Like Like.
    Hmmm. My ancient Kenwood TS-50 uses two 2SC2879 for the final stage, delivers 100 Watt peaks. Original 30 year-old Toshibas still do...
  • 2
    26OD004 replied to the thread 4 x HG 2879 advice.
    well I've replaced the 2nd pair of pills now and I have advised 50 - 60W max input drive. Hopefully I don't see that amp again.......... :)
  • 2
    26OD004 replied to the thread Gain Master.
    RG213 has a 0.66 velocity factor which is the same as RG58, so measurements should be the same for the lower half of the antenna...
  • 2
    26OD004 replied to the thread 4 x HG 2879 advice.
    But what about the bragging rights of running big power? Surely that makes the S meter move further? :P I think the sweet spot is...
  • 2
    26OD004 reacted to BC Coyote's post in the thread 4 x HG 2879 advice with Like Like.
    The other thing people don't realize is you need to quadruple power output to get a 1 S unit increase of signal at the receive end. So...
  • 2
    26OD004 reacted to BC Coyote's post in the thread 4 x HG 2879 advice with Like Like.
    Seems like every amp builder out there overdrives the snot out of the amp for the "demonstration video". 900 watts from a 4 pill is...
  • 2
    26OD004 replied to the thread 4 x HG 2879 advice.
    Appreciate the replies guys, you're saying exactly what I thought you would. I just watched the demo video again and it was doing 750 -...
  • 2
    26OD004 reacted to Shadetree Mechanic's post in the thread 4 x HG 2879 advice with Like Like.
    I have a few different 4 pill amps, and I only give them about 50 to 60 watts input. This gives about 600w peak output at about 15...
  • 2
    26OD004 reacted to Wire Weasel's post in the thread 4 x HG 2879 advice with Like Like.
    Simply sounds like it was repeatedly overdriven .... perhaps also into a little SWR. Getting 900W on SSB is way too much for 4 of those...
  • 2
    26OD004 posted the thread 4 x HG 2879 advice in Amplifiers.
    Hi all, A friend of mine recently imported a 4 pill amp from a builder in the US and has managed to pop pill number 1 and blow the base...
  • 2
    26OD004 replied to the thread Gain Master.
    I've made a gainmaster from RG213, and it worked great. I have some 1/2" heliax here and I've started to make one out of that. This...
  • 2
    26OD004 reacted to sp5it's post in the thread EXCESSIVE COAX with Like Like.
    Use that excessive coax to make choke baluns. One right under antenna feedpoint, another where coax enters house. Mike
  • 2
    26OD004 replied to the thread Beam question.
    No need to apologise, I critiqued the way you asked the question because it lacked clarity and was wide open to misinterpretation, I did...
  • 2
    26OD004 replied to the thread Beam question.
    I now feel like I didn't read your question properly, lol. You did specify director elements. You mean specifically why do the director...
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