Hi Gary!
This is really a strange problem. Maybe there is a wiring issue as WA3GIN
points out.
We use QC-2 headphones at K3LR. They work really well. The operators love
them. I've never heard of anyone having trouble with them. We used the older
QC-1 headphones for a long time and recently switched to QC-2s.
Let us know what you learn that solves your problem.
73!
Tim K3LR
http://www.k3lr.com
-----Original Message-----
From: rfi-bounces@contesting.com [mailto:rfi-bounces@contesting.com] On
Behalf Of Gary Smith
Sent: Tuesday, January 13, 2009 10:09 PM
To: rfi@contesting.com
Subject: [RFI] Hum in Bose QC2 headphones
Though not a RFI issue, perhaps someone has the solution?
When I connect my Bose QC2 noise cancelling headphones to my K3 I get
a hum which is only heard in the right headphone. It sounds like a 60
cycle hum and touching anything metal in any way connceted to the
radio resolves the problem completely.
I've turned off all the different pieces of gear associated with the
radio and I can get some reduction, just not an elimination of the
buzz. If I were to say attach a wire to my wrist while at the
station, it would be perfect. Of course that's not a good option for
several reasons but it does resolve the issue.
I remember this being an issue when I tried these with my laptop. The
headset works great with my MP3 player with no hum. The hum is only
when plugged in & when used strictly for noise cancelling, they work
great. These headphones are awesome for CW and I would like to find a
workable fix if possible.
Idears?
Thanks,
Gary
KA1J
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