More Boston-area brokered-time AMs

Dan Strassberg
Fri Nov 9 09:28:18 EST 2007

I said MOST of the market for a reason. MetroWest is an obvious exception
not just for 1150 but for ALL Boston AMs except WBZ. And as you noted, that
means not just the lower-powered stations but also all of the local 50-kW
Class B AMs. You will soon lose WKOX at night. As for WCRN, although CFJR is
gone, it (like nearly all now-dark Canadian AMs) remains internationally
notified. Although as long as it remains dark, it causes no interference to
WCRN, no US AM 830 can apply for a recalculated NIF as long as the
international notification remains on the books.

As for 890, the phasing to which you referred should have been considerably
ameliorated in many locations by the change in the night pattern that
accompanied the nighttime power increase to 6 kW. You may live in or near
the deep minimum at 14 degrees. I would expect bad phasing there. But there
is now a minor lobe between about 12 degrees and 325 degrees. The phasing
should be noticeably less in that narrow arc. Prior to the advent of the new
night pattern, that area (pretty much due north of the Ashland site, which
is just east of Route 126) was in an area of severely suppressed radiation.

Dan Strassberg,
eFax 707-215-6367

----- Original Message -----
From: "Garrett Wollman" <>
To: "Dan Strassberg" <>
Cc: <>
Sent: Friday, November 09, 2007 2:25 AM
Subject: Re: More Boston-area brokered-time AMs

> <<On Fri, 9 Nov 2007 01:20:54 -0500, "Dan Strassberg"
<> said:
> > However, despite having a signal that is much maligned by people who
> > mostly don't know what they are talking about, WTTT covers the
> > market fairly well day and night.
> Not the part of the market I live in.  In fact, none of the Boston
> 5-kWers make it here at night usefully.  Neither do the 50-kWers, for
> that matter, with the obvious exception of WBZ.  (My best in-market
> nighttime AM signals are 1200, 1060, 1030, and 830 in that order.  890
> has bad, bad off-axis phasing -- hardly surprising given the pattern
> -- and the problems of 680 and 850 are well-known.  For in-market NIF
> coverage area, 830 is probably third-best overall.  WCRN's official
> 10.289 mV/m NIF is greatly overstated now that CFJR is gone; it should
> be no more than 6.386 including all remaining contributors.)
> -GAWollman

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