[ICOM] 756PRO Bleedthru

[D C Macdonald]

Are you close to a Low Frequency Beacon transmitter
for an airport?  That may be the source of your intermod.
When I was stationed in Germany and operating as DL4AM,
the LF Beacon for Frankfurt IAP/Rhein-Main Air Base was just
a few hundred meters from my home.  I got terrible intermod
on 15M from the mix of 13M SW Broadcast and the LF Beacon.
It only occurred when the 13M was quite open, and only at
the very high end of 15, if I remember correctly from over
30 years ago.  A high-pass filter to block LF signals might
do the trick or possibly a series LC circuit resonant at the
LF frequency  ACROSS  the input.

Just an obscure recollection that might help.

Mac, K2GKK/5



----Original Message Follows----
From: "Radio Dude" <hypergolic at comcast.net>
Reply-To: ICOM Reflector <icom at mailman.qth.net>
To: <icom at mailman.qth.net>
Subject: [ICOM] 756PRO Bleedthru
Date: Mon, 28 Jun 2004 00:02:51 -0400

Is there anything I can do to prevent bleed-thru of SW broadcasts on the
upper HF bands, IE above 20 Mhz. I was on 15 meters today and it was
annoying as hell.

Tnx

PHILIP
KA4KOE

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