Re: 640 AM Frequency

["Dan Strassberg" <dan.strassberg@att.net>]

I think Detroit sunset in November is probably 5:15 or maybe even 5:30. I
think December sunset--the earliest--is at 5:00. But then, January
sunrise--the latest--is at 8:00. In New York, December sunset is more likely
4:45 than 4:30. There are a few months when the difference between New York
and Boston sunrise/sunset averaged over a month and rounded to the nearest
15 minutes is zero, but more often, the difference is 15 minutes. Boston
November sunset is at 4:30, and since December sunset in New York is at
4:30, I'd put my money on New York having November sunset at 4:45.

WDFN runs 50 kW D/10 kW-N DA-2. Same, for WISN the 1130 in Milwaukee. The
1130 in Minneapolis (KFAN?) is 50 kW-D/25 kW-N DA-2. All three have similar
nine-tower arrays with signal maxima aimed north-northeast. Al three have
night patterns that protect KWKH, WBBR, and CKWX. I believe that 1130 is
unique among the Class A channels in having two Class A stations in the US
as well as one in Canada. All three of the midwest 1130s have day patterns
that send the equivalent of about 5 kW-ND over approximately 270 degrees.
I'm not sure that the Toronto 640 day pattern is relaxed to that extent. For
one thing, there is a 640 in Akron that Toronto must protect.

--
Dan Strassberg, dan.strassberg@att.net
617-558-4205, eFax 707-215-6367

----- Original Message -----
From: Paul Hopfgarten <hopfgapr@sprynet.com>
To: Bob Nelson...WMWM <bobonradio@yahoo.com>; <dan.strassberg@att.net>;
<boston-radio-interest@bostonradio.org>
Sent: Wednesday, November 21, 2001 5:41 PM
Subject: RE: 640 AM Frequency


> BUT....from 4:30PM to Detroit Sunset (5:00?) I'm not surprised that you
> could pick up WDFN, probably at Daytime power-patterns until 5:00PM for
> November, were I'd venture to guess that WBBR goes to Nighttime
> pattern-power at 4:30PM
>
> -Paul Hopfgarten
> -Derry NH
>
> > -----Original Message-----
> > From: owner-boston-radio-interest@bostonradio.org
> > [mailto:owner-boston-radio-interest@bostonradio.org]On Behalf Of Bob
> > Nelson...WMWM
> > Sent: Wednesday, November 21, 2001 3:59 PM
> > To: dan.strassberg@att.net; boston-radio-interest@bostonradio.org
> > Subject: Re: 640 AM Frequency
> >
> >
> > Who knows... maybe it was the Toronto (Richmond Hill,
> > ON) station he was picking up despite it pushing to
> > the north. Yesterday at 4:30 pm, as it was getting
> > dark, I was picking up WDFN 1130 from Detroit (heard
> > them mentioning the Red Sox picking up a Tigers player
> > off waivers) and I've been told their signal pushes
> > to the north; not long afterwards, the 1130 from
> > NY (WBBR?) came in instead.
> >
> > --- dan.strassberg@att.net wrote:
> > > There's a 50 kW-U AM 640 in Toronto with TX on the
> > > south
> > > shore of Lake Ontario and a highly directional
> > > signal to
> > > the north
> >
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