[Elecraft] KPA-500 no RF until power cycles

[Jeff Cochrane - VK4BOF]

Hi Roy,
Try it without the PA Key cable, the KPA500 when connected to a K3 neither needs or wants it to be connected.
All keying signals will get to the amp via the AUXBUS Cable.

73 de
Jeff Cochrane - VK4BOF
East Innisfail
QLD, Australia
K3 #4257, P3#1629, KPA-500 #161
  ----- Original Message ----- 
  From: Roy Morris 
  To: elecraft at mailman.qth.net 
  Sent: Friday, November 25, 2011 3:33 PM
  Subject: [Elecraft] KPA-500 no RF until power cycles


  Tonight I also experienced the KPA-500 not putting out power in SSB mode 
  while the amp was in OPERATE mode.  All parameters in the amp were normal. 
  The K3 set power output correctly indicated 39 watts.  With the amp in 
  STANDBY mode the power went correctly to 100 set watts.  I put the amp in 
  OPERATE mode and pushed the TUNE button on the K3.  The amp then started to 
  work normally.
  I am using both a PA Key cable and the KPAK3AUX cable.  The amp is set up 
  for 240V operation.  This is the first time I have experienced this.  I also 
  am wondering if this is a relay problem.  Roy Morris  W4WFB 

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