[R-390] HELP ! Deaf R-390A
Craig
hamfish at comcast.net
Mon Oct 26 14:28:00 EDT 2015
Hi Rick,
Start in the beginning. Inject, using a sig-gen, a modulated signal into the
balanced antenna input. Follow the signal thru the receiver with a scope &
tube extender. Shouldn't take long to find the problem.
Regards,
Craig
-----Original Message-----
From: R-390 [mailto:r-390-bounces at mailman.qth.net] On Behalf Of Rick
Popovich
Sent: Monday, October 26, 2015 9:25 AM
To: R-390 at mailman.qth.net
Subject: [R-390] HELP ! Deaf R-390A
Hello All,
I am working on a R-390A and initially thought there was an issue with the
IF deck. I swapped in a known good deck and still am not getting any
receive. The Audio deck and PTO were checked previously and checked out OK.
At this point it looks like the RF deck is the culprit, and I would like to
get suggestions or thoughts from the group on what most likely may be the
problem or where I should begin my search for the issue.
Thanks in advance !
Rick Popovich
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