The hum seems to be the 50 Hertz power supplies?
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discussion is drifting away to amplified speakers but there is realy a problem
with
HUM comming from KPA500
1) HUM during transmit
2) HUM somes sometimes when the KPA500 is off, but on line and backswitch on
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I have experienced absolutely no hum, either mechanical or electrical,
associated with my KPA500 in either of my two ham shacks.
/Rick N6XI
On Tue, Aug 2, 2011 at 11:08 PM, Klaus Koppendorfer k...@ccf.net wrote:
discussion is drifting away to amplified speakers but there is realy a
problem
Klaus,
I know you've already contacted Elecraft Support about this. Right?
If you have not, you will have a good deal more success contacting them, since
they have probably already seen this before and know what to look for.
73,
Tom
Amateur Radio Operator N5GE
ARRL Lifetime Member
QCWA
Bob, our KPA500 engineering project manager, will be contacting Klaus.
73, Eric WA6HHQ
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www.elecraft.com
On 8/3/2011 1:37 PM, n...@n5ge.com wrote:
Klaus,
I know you've already contacted Elecraft Support about this. Right?
If you have not, you will have a good deal more success
On 8/3/2011 9:40 AM, Rick Tavan N6XI wrote:
I have experienced absolutely no hum, either mechanical or electrical,
associated with my KPA500 in either of my two ham shacks.
/Rick N6XI
Nor have I in my one ham shack. In fact, the only time I've heard the
fans come on is when I shut the amp
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