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Re: [IRCA] The 1130 problem
- Subject: Re: [IRCA] The 1130 problem
- From: bill kral <jwkral@xxxxxxxx>
- Date: Sat, 2 Oct 2010 16:39:23 -0700 (PDT)
The interference problem on 1130 in the CKWX coverage area might be happening
because there is a significant reduction of ground wave strength east of the
flatland Tx location due to a rapid rise in topography (just a few miles east of
the Fraser River delta),which is higher than the height of the towers of CKWX
and other Vancouver stations which have their towers on the marshes or farmlands
just south of the city.This plateau extends from around Surrey eastward for
about 10 miles and drops down again to just above sea level near Langley and
includes a few higher elevations which produce enough signal loss in that
direction to reduce the strength enough to create some dips in the ground wave.
The same thing happens to the north of Vancouver where high mountains block the
signal.Here in Victoria,CKWX has a clean signal at night with just a hint of
"unders" audible when their signal is nulled. Bill in BC
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