Re: [Elecraft] KPA500 - AC hum in the monitor

2013-07-08 Thread Jack Berry
  73! Jack - WE5ST From: Phil Irons ve1...@gmail.com To: Jack Berry we...@yahoo.com Sent: Thursday, July 4, 2013 7:24 PM Subject: Re: [Elecraft] KPA500 - AC hum in the monitor HI Jack... First of all, I apologize for the lateness of this reply; I've been out

[Elecraft] KPA500 - AC hum in the monitor

2013-06-30 Thread Jack Berry
Hoping you all will have some good ideas on a cure for this problem. I am hearing AC hum in my monitor headphones - ONLY when transmitting. The hum comes and goes instantly when the KPA500 is switched on/off. Same with other headphones. No question it's related to the amp but not necessarily