[Elecraft] KPA Cooling Fan Whine

[Darwin, Keith]

I have a pair of Sony studio phones that are very sensitive.  Using them
I get a lot of hiss off rigs because I have to reduce their output and
thus their S/N ratio.

My solution was to get an in-line volume control from Radio Shack.  It
is a little pigtail with a volume control.  Put it between the
headphones and the rig.  Turn the in-line control down and the rig back
up.

- Keith N1AS -
- K2 5411.ssb.100 - 

-----Original Message-----
From: Trail Fox

Recently obtained a new headphone, the Kenwood HS-5.  ... It is
extremely sensitive, so much so that one must turn the AF gain way down,
... KAP cooling fan came on, ... nasty whine in the headfones ...