Looking at the manual, there is a relay in the circuit near the antenna 
connector, looks like that is the T/R relay. There is a bunch of relays on the 
output filter board. Lots of places for Deoxit! Good luck with it.    Mike 
Cumbo, ND4S
Sent from Mail for Windows
From: ROLAND HOWELL via TenTec
Sent: Monday, February 13, 2023 3:16 AM
To: TenTec@contesting.com
Cc: ROLAND HOWELL
Subject: [TenTec] 538 Jupiter
Hi Folks
I am going to be acquiring the above T/RX, in a non working condition, 
well not 100%, low RX and no TX.
Is there any other faults that are known about that i should be aware 
of?.
No manual at the moment, i think seller states one with it.
Is there a relay involved with T/RX changeover?
As always any and all advice/help much appreciated
This is my 2nd request as the 1st one didn't seem to go anywhere, please 
ignore if 1st one surfaces.
73
Snowy G0HZE
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