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Re: LA-1K Trips to Standby in SSB mode only


 

开云体育

I had tripping issues. All I can tell you is Don’t drive the amp more than 45w. 50max and not more than 1000w output.

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  1. What is the SWR?
  2. What band does it do it on?
  3. Check your Coax ends to the band its doing it on.
  4. Replace or resolder the Coax ends and DO THEM PROPERLY. (eg: don’t knick them or introduce possible short during high power)
  5. Same thing with your antenna.

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This is all I got. Hope it helps because it helped me.

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73

Barry

VE6UM

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From: [email protected] <[email protected]> On Behalf Of Thomas NE7X
Sent: August 15, 2022 10:37 AM
To: [email protected]
Subject: [la1k] LA-1K Trips to Standby in SSB mode only

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My LA-1K keeps tripping to stand-by when I drive it on SSB.
On CW, RTTY or FM/AM, I can key the amp with 60-80 watts drive and get full 1200 watts carrier out, no issue. Keys/Unkeys/ no issue.
However, when I operate SSB, if I drive it with more than 20-25 watts, the amp goes into standby. With only 20 watts drive I only get about 700-750 watts PEP output.
I tried adjusting the ALC, does not seem to make any difference what ALC setting I have.
Any suggestions when might be going on?
NE7X...

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