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Re: Why I think QMX Calibration Kills PA


 

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This issue has been around since QDX. L502 kicks back when the PA is shut down abruptly. I thought Hans was going to use the modulator to "shape" the on/off transition to eliminate this. But apparently not, at least during cal.

Tony
AD0VC


From: [email protected] <[email protected]> on behalf of Wiggle Pig via groups.io <wigglepig@...>
Sent: Monday, May 5, 2025 2:12 PM
To: [email protected] <[email protected]>
Subject: Re: [QRPLabs] Why I think QMX Calibration Kills PA
?
I wonder if the cal signal switch-on has no shaping by, hence the high voltage from the switch on?
?
I popped a couple of the finals on my QMX (high band) running the SSB cal cycle so am interested in what might have caused it.?

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