[MRCA] TRC-77 transceiver XMITTER power "ON" indicator mod

[Anthony Clare]

Tim,
 
 
   
 
 It's OK. You used an existing hole. I call that an approved modification.
 
 
   
 
 n3kcb
 
 
 ------ Original Message ------
  Received: Sat, 21 Jun 2025 01:47:11 PM EDT
  From: Tim <timsamm at gmail.com>
  To: Army-Radios at groups.io, "mrcg-west at groups.io" <mrcg-west at groups.io>, MMRCG <MMRCG at groups.io>, MRCA <mrca at mailman.qth.net>
  Subject: [MRCA] TRC-77 transceiver XMITTER power "ON" indicator mod
 
 
 
 
   
     TRC-77 Ops:  I hate mods (I know, I know) but this problem has drained my battery too many times.
     
     When the radio is switched to XMIT there is no other indication that the HVPS and filaments are powered waiting for a Key closure in QSK/Break-in mode.  It draws 2 amps while waiting.  So I added a simple LED indicator that shines through an existing panel hole to alert me that I left it in XMIT mode by mistake or accident.  Dumb!
     
     Other details here, about halfway down the article: https://www.n6cc.com/trc-77-hf-cw-transceiver/
     
     
       
     
     
       
     
     Flame Shields Up !!
     
     FYI, Tim
     
     N6CC
     
   
   
 
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