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All my meters swing forward, receiver swings backwards

Discussion in 'Amplifiers' started by groundwire, Oct 17, 2020 at 11:16 PM.

  1. groundwire

    groundwire Well-Known Member

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    This is a weird one. With either the radio, radio and driver, radio and big amp, or radio driver and big amp, my bird meter in pep mode swings forward. But stations receiving me say its swinging backwards on their meter. I have never seen it happen this way before. Usually meters will go backwards because of to much carrier etc but can this be a symptom as well?


     
    Slowmover likes this.

  2. Shockwave

    Shockwave Sr. Member

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    Put the Bird in average mode. If it swings back in average, you are overdriving the amp and have run out of headroom to reproduce strong positive peaks.
     
    tecnicoloco, NZ8N and Slowmover like this.
  3. groundwire

    groundwire Well-Known Member

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    In avg mode it moves forward just a hair, literally. Pretty much no movement at all, weird.
     
    #3 groundwire, Oct 17, 2020 at 11:23 PM
    Last edited: Oct 17, 2020 at 11:49 PM
    Slowmover likes this.
  4. groundwire

    groundwire Well-Known Member

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    Im running a 2x2879 driver into a 16 pill. Final output carrier is only 500w swinging 2600w. Driver is 30w carrier swinging 300w. Its loafing along i would think
     
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  5. 543_Dallas

    543_Dallas Sr. Member

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    Sounds like it's working fine. You won't see strong swing in average mode unless you're super swangin'.
     
    Tokin, ForestRunner98 and Slowmover like this.
  6. groundwire

    groundwire Well-Known Member

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    Heres another weird thing to me. One guy that was receiving me said when he turned his rf gain down then it had good forward swing on his end, huh? He was like 40mi away so we were not close at all.
     
    Slowmover likes this.
  7. Slowmover

    Slowmover Sr. Member

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    (Only part joking)

    It’s all of it right here. Run the checklist. Prepare.
    Things start happening fast, maybe too fast, and could be any outcome.



    Careful as you key up.
    (Big Shoes to fill).

    .
     
    #7 Slowmover, Oct 17, 2020 at 11:50 PM
    Last edited: Oct 17, 2020 at 11:58 PM
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  8. sp5it

    sp5it Master of puppets

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    Use scope Luke... you'll find out why.
    Looks like overdrive to me.
    Mike
     
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  9. groundwire

    groundwire Well-Known Member

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    So 300w pep into a 16 pill is to much? Or the 500w carrier out of the 16? Im barely pushing it. All amps are b biased fyi
     
    Slowmover likes this.
  10. AudioShockwav

    AudioShockwav Extraterrestrial Admin
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    Is this only one guy giving you this report or everyone?
    If you show forward on avg mode it should be good.
    500 watt dead key out of 16 transistors should have plenty of headroom.

    73
    Jeff
     
    Crusher likes this.
  11. sp5it

    sp5it Master of puppets

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    I lost my crystal ball.
    Apply two tone to mic input and watch the output on the scope. Adjust until it will look fine.
    Mike
     
  12. groundwire

    groundwire Well-Known Member

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    Two people so far said back swing. In avg my meter doesn't move unless i back the carrier down to like 300w, than it goes forward a little. The driver meter swings big in avg mode. I dont have an oscilloscope
     
    Slowmover likes this.
  13. 338_MtRushmore

    338_MtRushmore Sr. Member

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    Could 2600 watts at 40 miles make a receiving s meter act strange?
     
  14. groundwire

    groundwire Well-Known Member

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    I know suuuper high power very close to a receiver can make the s meter read funny, but far away? I dont know
     
  15. TIN_CAN

    TIN_CAN Well-Known Member

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    Does the radio have a swing kit? If so it could be installed backwards.......chuckle
     
    144inBama, Tokin and 543_Dallas like this.

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