Market exclusivity, WTTT, and WNSH

Dan Strassberg
Tue Feb 7 06:37:41 EST 2006

Technically no. WTTT runs 5 kW day and night and the night-pattern RMS value
is actually the equivalent of almost 10% higher power than the day-pattern
RMS. However, the night pattern is considerably more restrictive to the
north and west than is the day pattern and even if it were not, WTTT, like
all Class B AMs, is subject to nighttime interference at field intensities
where it receives no interference by day. The NIF value for WTTT is a
quite-respectable 5.8 mV/m. However, 5.0 mV/m is considered city-grade by
day. Because of the greater nighttime antenna efficiency and the slightly
different pattern shapes, the nighttime 5.8 probably pretty much coincides
with the daytime 5.0 around a wide arc to the southeast.

Dan Strassberg,
eFax 707-215-6367

----- Original Message -----
From: "Bob Nelson" <>
To: "Larry Weil" <>; <>;
Sent: Tuesday, February 07, 2006 3:28 AM
Subject: Re: Market exclusivity, WTTT, and WNSH

> WTTT signal gets weaker after dark, but those who have trouble picking
> them up can try the WGIR stations out of Manchester (610), Rochester
> (930), and Portsmouth NH (1380),
> or WABC, or tape delayed at 7 pm on WPRO.

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