Power freezes

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KW4JM
 

Posts: 7
Joined: 10 Sep 2022, 01:13

Power freezes

Post by KW4JM »

My (tr)USDX freezes while I'm transmitting CW. The sound stops and the screen freezes and sometimes the screen displays "!!!Check PTT/Key". After a half minute it comes back on. Then it fails again a few moments after that. I thought it might refer to a setting but there is no such setting. My paddle is fine. I bought it assembled just a few days ago. Thanks! Scott kw4jm
OK2PDH
 

Posts: 1
Joined: 18 Oct 2022, 10:30

Re: Power freezes

Post by OK2PDH »

I have the same problem. Karel OK2PDH
dl6sez
 

Posts: 399
Joined: 30 Dec 2021, 22:54

Re: Power freezes

Post by dl6sez »

Hello OMs,

this sounds like stray RF on power supply lines or stray RF from a balanced antenna getting back to the unbalanced (tr)uSDX output port or stray RF on the Paddle/Key cable......
Never had any issue like that on my uSDX and (tr)uSDX.
Think about you are using a fully plastic housing and therefore no real screening, only large ground plane area on inner PCB layers...

73 de Chris
Chris DL6SEZ, JN48XL near Ulm, Southern Germany
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