[BC] anybody else seeing glitches from AMC-8 ? update

[Ronald J. Dot'o Sr.]

Back in the 50's through the 70's there was an FPS-35 over the horizon 
radar at Selfridge AFB/ANGB, MI. It had a massive horizontal orange 
peel antenna on a 4 story building and megawatts of peak power. 
Everywhere in the Mt. Clemens, MI area you would hear a BZZZZZZZZT 
from the prf every 11 seconds as it rotated.  It was in the phones, AM 
radios, even the local dragstrip PA system!  I think the carrier was 
in the 440 Mc range but you'd hear it in my HF receivers and MF 
radios.  It interfered from just brute strength and you couldn't 
suppress it no matter what you did, other than turn the set off. 
People learned to live with it I guess.  They finally decommissioned 
it around '73.

Ron D


----- Original Message ----- 
From: "Craig Healy" <craig.healy at hotmail.com>
To: "Broadcasters' Mailing List" <broadcast at radiolists.net>
Sent: Sunday, May 04, 2008 07:14
Subject: Re: [BC] anybody else seeing glitches from AMC-8 ? update


>> we have never seen an AWACS in these parts (90 miles N of St. 
>> Louis)
>
> At the 550 station in Providence around 1975, we had a periodic 
> "bzzZZZzztt"
> in the production room speakers.  Roughly a ten or fifteen second 
> interval,
> IIRC.  That did turn out to be an AWACS-type aircraft.  Gradually 
> increased
> in volume and then decreased.  So, it's not just digital signals 
> that get
> interference.  It was a rather old RCA console and 
> well-shielded/grounded.
> Sometimes a wire is just positioned to act as an efficient antenna, 
> I guess.
>
> A couple of years ago in Newport, RI at one of the festivals, the 
> remote
> broadcast equipment for one of my clients had a similar problem. 
> This time
> it was caused by a Navy ship in the harbor.  We could see the 
> antenna turn
> and the noise was timed with the rotation.  The ship was leaving, 
> and the
> noise left with the ship.
>
> Craig Healy
> Providence, RI
>
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