Soxless Boss

Dan Strassberg
Sat May 6 17:17:52 EDT 2006

The pattern was designed to avoid wasting energy over the ocean. As a
result, WBZ's signal over an arc of close to 180 degrees centered on the
west is the equivalent of about 100 kW into a single half-wave tower. More
recently, however, a 1030 station was built in, IIRC, San Juan PR. Although
far from the center of WBZ's null, this station receives less interference
from WBZ than it would receive if the Boston station were ND. Consequently,
if WBZ were to make any changes in its facilities, it would certainly not be
allowed to increase its night signal in the direction of Puerto Rico and
might be required, under the "ratchet rule," to reduce its signal toward
Puerto Rico by 10% (depends on whether WBZ's 10% skywave in PR is greater or
less than 0.1 mV/m. If greater, WBZ establishes the PR station's NIF contour
at something greater than 2 mV/m. In that case, WBZ would have to reduce its
signal toward PR at night in connection with any substantive change
in its operation). Based on all of the machinations that west coast stations
are now going through to reduce the signals they send toward Hawaii, which
is farther from, say, San Diego than I believe PR to be from Boston, I'd say
that it's likely that WBZ's 10% skywave in PR IS greater than 0.1 mV/m.

Dan Strassberg,
eFax 707-215-6367

----- Original Message -----
From: "Larry Weil" <>
To: <>
Sent: Saturday, May 06, 2006 3:37 PM
Subject: Re: Soxless Boss

> At 09:49 AM 5/6/2006, Cohasset / Hippisley wrote:
> >As I recall, WBZ uses two towers (probably a quarter wavelength, or
> >about 230 feet, apart) to create a cardioid pattern with the null
> >essentially due east and a very broad maximum from North through
> >West to South -- just about ideal for its primary intended coverage area.
> Why would there need to be a null to the east?  Is there a station
> somewhere in Europe that they are required to protect?
> Larry Weil
> Lake Wobegone, NH

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