[TenTec] Model 544 TX/RX changeover problem

[Edward Crawford]

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 at n4ekv.com> 
  To: tentec at contesting.com<mailto:tentec at 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/>



  _______________________________________________
  TenTec mailing list
  TenTec at contesting.com<mailto:TenTec at contesting.com>
  http://lists.contesting.com/mailman/listinfo/tentec<http://lists.contesting.com/mailman/listinfo/tentec>