Limbaugh returns to WRKO

Sat Aug 11 09:30:04 EDT 2012

According to the software I use, the distance from WSMN's old transmitter
site to WBZ is 45.1 miles. From WSMN's proposed new site to WBZ is 45.5
miles. From WNNW 800, the distance to WBZ is 31.7 miles. From WCCM 1110, the
distance to WBZ is 38.9 miles. I don't know which of the sites I mentioned
(WNNW, WSMN (old), WSMN (proposed), or WCCM) is closest to where you live.
Without that info, I can't prove an approximate distance from where you live
to WBZ.

Dan Strassberg (
eFax 1-707-215-6367

----- Original Message ----- 
From: "Laurence Glavin" <>
To: "Scott Fybush" <>;
Sent: Tuesday, August 07, 2012 1:41 PM
Subject: Re: Limbaugh returns to WRKO

> >----- Original Message -----
>>From: Scott Fybush
>>Sent: 08/07/12 11:06 AM
>>Subject: Re: Limbaugh returns to WRKO
> >On 8/7/2012 3:52 AM, Bob Nelson wrote: > I stand corrected about
> >Entercom's other AM in Buffalo. And the 1520 > they have, WWKB, actually
> >can sometimes reach our own area (even if it > can't reach Rochester for
> >some reason). >It's not "for some reason." It's for a very easily
> >explained engineering >reason. Any AM antenna system sends signal outward
> >along two paths: a >groundwave signal that travels along the ground for
> >as far as the ground >conductivity can carry it, and a skywave signal
> >that shoots upward at an >angle. During the day, the skywave signal
> >passes through the ionosphere >and out into space. At night, charged
> >layers of the ionosphere reflect >those skywave signals back down to
> >earth at a distance. >Most of the time, those skywave bounces land at a
> >distance beyond the >end of the normal groundwave coverage. But on a
> >fairly high MW frequency >like 1520, from relatively short towers, the
> >first skywave bounce lands >quite close in - 75 miles in, or thereabouts,
> >wh!
> ich puts it right over >Rochester. And that's close enough that there's
> still a lot of >groundwave signal present. Because the two signals arrive
> over different >paths, they land out of phase, and it's that phase
> cancellation that >makes 1520 hard to hear after dark in Rochester, just
> as it makes 1030 >hard to hear sometimes around Springfield, or WGY around
> Syracuse. >It's not so much that WWKB "can't reach Rochester" - it's more
> that it >reaches Rochester by too many different paths at once! >s
> On a few occasions, usually late at night in the fall/winter period of
> long hours of darkness, I've experienced that
> short-wave effect while listening to WBZ-AM, whose antenna system is the
> most distant Boston-area AM
> signal I receive reliably at night. I live 30 miles due north of Boston
> within easy walking distance of the NH border,
> so the intervening mileage the signal traverses can't be much more than
> forty miles.

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