Ed,
Thanks for that tip! A little DeOxit on the T/R-RX antenna switch really
woke up the receiver. S meter readings are higher now, and I'll let you
know if it also fixed the TX/RX changeover problem which had become
intermittent prior to this fix.
73,
Adam N.
Martinez, California
www.n4ekv.com
----- Original Message -----
From: "Edward Crawford" <w4wvw@msn.com>
To: "N4EKV" <adam@n4ekv.com>; <tentec@contesting.com>
Sent: Sunday, February 01, 2004 3:57 AM
Subject: [TenTec] Model 544 TX/RX changeover problem
The first thing I would do, if you haven't already, is look at the T/R-RX
antenna switch on the rear.
Just work it back and forth a few times. These can cause receiver muting
when the contacts get dirty.
Worth a try.
73. Ed/w4wvw
----- Original Message -----
From: N4EKV<mailto:adam@n4ekv.com>
To: tentec@contesting.com<mailto:tentec@contesting.com>
Sent: Saturday, January 31, 2004 2:34 AM
Subject: [TenTec] Model 544 TX/RX changeover problem
I have a nice Model 544 that just developed a transmit/receive changeover
problem that I need some assistance diagnosing.
All was working FB in QSO on 75m LSB when I unkeyed the mic and the
S-meter
went near full scale with RX sigs very muted. Powering off/on the radio
fixed the problem until I keyed up again, and then the problem reoccured.
Maybe a T/R relay is sticking or dirty? I believe this rig has a reed
relay
and a second relay though I'm unsure which would cause this problem and
what
corrective measure to take once identified.
Thanks in advance,
73,
Adam N.
Martinez, California
www.n4ekv.com<http://www.n4ekv.com/>
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