[BC] AM Auxiliary Sites

[Dana Puopolo]

------ Original Message ------
Received: Wed, 28 Mar 2007 12:39:10 PM EDT
From: Mike McCarthy <Towers at mre.com>
To: "Broadcasters' Mailing List" <broadcast at radiolists.net>
Subject: Re: [BC] AM Auxiliary Sites

I have two AM stations with full power redundant sites.  Of those, one will 
get a night site this or next year.  So that station will have three sites.

WMVP has a 50KW back-up site at WLS's AM site.  THAT's a combiner...110Khz, 
both 50KW.

There are two split sites here as well.  950 and 1160 both operate 
different sites day and night. Each can cover the metro as needed.

I can't say if WBBM and WSCR are doing anything.  They're 110 Khz as well 
and 5 miles apart.

MM


At 12:26 PM 3/28/2007 -0400, Scott Fybush wrote
>r j carpenter wrote:
>
>>How many AMs have an auxiliary installation at a different site? They 
>>must be very rare.
>
>I know of at least four: WBZ (at the studio), WEPN (at the site of 
>sister-station-for-now WABC), WWL (at the site of sister station WWWL 
>1350, and formerly at the WWL-TV tower) and WCCO (at another former AM 
>site a few miles away).
>
>Unless it's done really on the cheap (something like a little Armstrong or 
>Nautel 1 kW box feeding a longwire on the studio roof), that would be one 
>expense I think even the biggest stations would have a hard time 
>justifying, as long as there's aux capacity and a generator at the main tx 
>site.
>
>I'd think the biggest value to such a separate-site aux facility would be 
>in case massive tower work is needed at the main site. I know the 10 
>kW-into-a-longwire setup at WBZ got a lot of use a few years ago when the 
>towers at the main site in Hull were being rebuilt, and I believe the WEPN 
>installation at WABC (a 12.5 kW Nautel into the WABC aux tower) was built 
>as a precaution in case the work on the huge Xanadu 
>shopping/sports/entertainment project next to the main WEPN site mucked 
>with the pattern too much (or the WEPN RF played havoc with the 
>construction cranes.) I don't know how much use it's actually gotten.
>
>s
>
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