Soxless Boss

Dan Strassberg
Sat May 6 17:02:22 EDT 2006

Yeah, but it's a bookkeeping issue. What you say is true for directional US
AMs but, by FCC regulations, not for directional US FMs. But it IS true for
directional Canadian FMs. As I understand it, powers stated for directional
Canadian FMs are based on the RMS power over 360 degrees (as is the case for
all US AMs, directional or not). However, CPs for directional Canadian FMs
also state the "peak" power based on the maximum field in the horizontal
plane. Powers stated for directional FMs in the US are based only on the
maximum field in the horizontal plane. Therefore, a directional FM in the US
can have an RMS power that is substantially lower than the power the station
advertises on its stationery, which is what the Canadians call peak power
but the US calls simply "power." The Canadian method is more precise--and
some would say more accurate.

Dan Strassberg,
eFax 707-215-6367

----- Original Message -----
From: "Stephanie Weil" <>
To: "Larry Weil" <>
Cc: <>
Sent: Saturday, May 06, 2006 4:14 PM
Subject: Re: Soxless Boss

> On Sat, May 6, 2006 16:00, Larry Weil said:
> > But I always thought that directional AM's have no forward gain, that
> > the only purpose of being directional is to protect the signals of
> > other stations on the same or adjacent frequencies.  Am I wrong?
> Yeah, but picture it like squeezing a balloon.  That extra air (signal)
> has to go somewhere.
> So if the pattern is pinched in over here, it gets augmented over there.
> --
> Stephanie Weil
> New York City, NY, USA

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