[Kenwood] 160m reception?

2003年12月15日 10:31:04 -0800

I believe there's a attenuator in the "stock" 850's bandpass filter section
for <2.0MHz. This was put there to prevent overload from local AM broadcast
band transmitters. There's a mod out there detailing how to bypass the
attenuator to improve AM Broadcast band reception, but this would also
affect 160M.
I've never applied this mod to either of my 850's, but is it possible that
the "problem" you're seeing/hearing is actually a result of this mod? The
"workaround", if this mod was applied, is to use the front-panel 6 and 12 db
attenuators when working 160M (as well as using the AIP function).
73,
 - Aaron Hsu, NN6O
-----Original Message-----
From: WW3S [mailto:[email protected]]
Sent: Sunday, December 14, 2003 5:43 PM
To: [email protected]
Subject: [Kenwood] 160m reception?
I'm wondering if I have a problem with my TS850 on 160m? The noise level is
always 20 over 9 and obviously I can only copy the strongest stations. It
may just be powerline noise but here is what I see; when I tune down into
the broadcast band, the noise disappears or at least diminishes. I know the
radio as a attenuator in that portion of the band so that makes sense but
when I tune above 2.000, the noise also is cut way down. I can hear
something click ( the bandpass filters I think) in as I tune from 1.999 to
2.001 and whatever happens really cuts the noise way down. Is it possible
something is wrong with the filtering in the 160m portion of the bandpass
filters? How can I check it?
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