[Elecraft] RFI PC Speaker Hum

[Sverre Holm (LA3ZA)]

One thing that I believe has not been mentioned in this thread is a very
simple solution to the hum problem. Since the K3 already has an audio power
amplifier, amplified speakers are not really needed. I had an old pair of
computer speakers - which hummed every time I transmitted on the K3. Then I
just disconnected the amplifiers and connected the inputs directly to the
speakers. Now I don't need to connect them to their power supply, and they
will of course not hum.



-----
Sverre, LA3ZA

K2 #2198, K3 #3391
http://www.qslnet.de/member/la3za/K2/mod.html LA3ZA Unofficial Guide to K2
modifications 
-- 
View this message in context: http://elecraft.365791.n2.nabble.com/RFI-PC-Speaker-Hum-tp5116897p5119339.html
Sent from the [HAM] mailing list archive at Nabble.com.