How I Tune Up My Amplifier

Discussion in 'Amateur Radio News' started by KM9G, Jul 7, 2021.

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  1. WB2WIK

    WB2WIK Platinum Subscriber Platinum Subscriber QRZ Page

    All this can "help" if you take a long time to tune up.

    But if you take 5 seconds to tune up (I've never found I needed more than that), then a steady carrier without pulsing works fine and doesn't stress anything. Longer tune-up cycles are fine with more robust tubes than 811As. A 3-500Z can take a whole lot of plate current (like an amp per tube) for a while without stressing the tube at all.
    M1WML and K3RW like this.
  2. AG5CK

    AG5CK Premium Subscriber QRZ Page

    Do you have any 100 watt rigs? I'll bet there's a linear amplifier in it.
    M1WML, K5QBF, PU2OZT and 1 other person like this.
  3. KQ1V

    KQ1V Ham Member QRZ Page

    Ha! Good one. This is usually said by someone who has been continually walked-on in contests, or someone who wants a philosophical debate on just what is the perceived minimal amount of power to make a QSO. You might also say, "Real hams only use 20 watts and CW on a straight key..." that sounds just as... ignorant. Or perhaps you should start a petition to ban towers and high-gain beams! It's a hobby, don't begrudge what others spend their money on, or what their interests are; in other words, to quote SFC Hulka, "Lighten up, Francis."

    Max Smoke
    W0ARM, KJ7MX, M1WML and 2 others like this.
  4. MM0IMC

    MM0IMC Ham Member QRZ Page

    Just like Idaho Burner Blow-up?:D
    M1WML likes this.
  5. KD2RCF

    KD2RCF Ham Member QRZ Page

    You may notice your rig will show a different SWR when set to "STBY" vs "OPR", because when set to standby it's a pass-thru (your rig sees the SWR to your antenna), but when set to operate your rig sees the SWR to the amplifiers input circuit. For this reason, I usually start by hitting the TUNE button on my rig while the amp is set to OPR... and then tune the amp. But that's just me ;-)
    M1WML likes this.
  6. W4HM

    W4HM XML Subscriber QRZ Page

    My amplifier post was tongue in cheek, it was supposed to be humorous:D. I'm very pro amplifier.:)
    M1WML, PU2OZT, KQ9J and 2 others like this.
  7. WN1MB

    WN1MB Ham Member QRZ Page

    M1WML and N3FAA like this.
  8. KE0GXN

    KE0GXN XML Subscriber QRZ Page

    LOL! You reeled one in OM… :D
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  9. KQ9J

    KQ9J Premium Subscriber QRZ Page

    I bought my first amp, an AL-811H, in 1995 or so. I don't remember being all confused and unsure of how to tune it. I read the manual several times before I put the amp inline and followed the manual steps when tuning and operating the amplifier. I'm no Einstein, but I just don't recall it being all that difficult. :)
    W4MKC, WN1MB, M1WML and 1 other person like this.
  10. K5QBF

    K5QBF XML Subscriber QRZ Page

    I mean he's running a DX Commander so.....
    M1WML likes this.

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