Before you contact anyone, install a BC SBF or an HPF with a corner about
1.8 MHz. These should be at least a 4-section Chebyshev design. You could
also try paralleling your feedline with a shunt-connected 103-foot open
terminated coax of RG58 (assumed Vf of 0.66). That is a 1/4-wavelength
'short' at 1570 kHz. If any of the three make the problem go away or
become noticeably weaker, the problem is on your end. If not, highly
likely its a loose guy wire on their transmitting tower, or similar close
to the BC tower.
Dave - WØLEV
On Tue, Jan 28, 2020 at 5:06 PM N4ZR <n4zr@comcast.net> wrote:
> I'm embarrassed to admit that I had overlooked a noise-maker in my
> shack, my 1 TB USB disk drive. I cleaned that up with a few turns of
> the DC power cable around a type 31 toroid, and now I've uncovered
> something under it. It's a wideband signal (tuning makes no
> difference), but sounds very much like a badly distorted broadcast station.
>
> Just on a hunch, I tried tuning across the AM broadcast band, and found
> a loud AM sports radio station on 1570 KHz that appears to be
> broadcasting the same content - pauses, pitch of voices, etc. all seem
> to match.. Unfortunately, just before I could get set up to record, the
> voices on 160 suddenly went away. I'm assuming they'll be back, and
> while I wait to get a recording I'm wondering:
>
> * Does this sound like intermod, or some other phenomenon?
>
> * Is it the result of something wrong at the station?
>
> * If so, how best to approach them about it?
>
> --
> 73, Pete N4ZR
> Check out the Reverse Beacon Network
> at <http://reversebeacon.net>, now
> spotting RTTY activity worldwide.
> For spots, please use your favorite
> "retail" DX cluster.
>
> _______________________________________________
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> RFI@contesting.com
> http://lists.contesting.com/mailman/listinfo/rfi
>
--
*Dave - WØLEV*
*Just Let Darwin Work*
*Just Think*
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