[CQ-Contest] Audio hum

[w5xd@alum.mit.edu (W. Wright, W5XD)]

I discovered another way to get hum into transmitted audio. Try to prevent
hum by driving your rig's mic input through a cable with an isolation
transformer. Then place that isolation transformer so that it touches the
blower motor on your amplifier. Its an interesting object lesson in the
physics behind Maxwell's equations:-)

Wayne, W5XD



--
CQ-Contest on WWW:        http://www.contesting.com/_cq-contest/
Administrative requests:  cq-contest-REQUEST@contesting.com