Cosmopolis
Grays Harbor County, WA
46.935144, -123.739014
550 Feet
Call: W7EOC
145.390 -600kHz 118.8Hz
Cosmopolis VHF Repeater
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Location: Overlooking Cosmopolis, WA, from near the crest of Cosmopolis
Hill, on Highway 101, about 2 miles north of the Hwy 107, "Montesano
Cutoff", Juction.
Coverage: The "Cosi" Repeater covers the
Aberdeen/Hoquiam area of Grays Harbor County from Ocean Shores on
the west, to Elma on the east. In addition, the coverage follows Highway 101
south to the Pacific County border.
One constraint on this site is the landlord's requirement
that the entire station be mounted to the back wall and not stick
out more than a foot. Doyle, N7UJK, installed and painted a sheet of chip-board
as a foundation, and all components were secured to this. The
Wacom 5-inch BpBr duplexer
sticks out 11-inches, and the rest of the gear is well within our
one-foot allowance. Since we installed the repeater, the tiny shack has
filled up with other equipment. We are lucky to have this site, and
living within the one-foot space requirement is a modest concession.
During an emergency, this repeater will probably be disconnected
from the network, and linked to the Minot repeater to allow
communications within Grays Harbor County. This repeater is directly
accessible from the Grays Harbor EOC in Montesano.
Hardware: The repeater is based on a 100-watt GE Mastr-II mobile chassis,
duplex-converted and running 40-watts output. The controller is a
CAT-200B in a Radio Shack metal box with basic controls mounted
on one side. A local speaker provides test audio when desired. The link
to
BeachNet
is provided by a GE Phoenix UHF mobile, running 10-watts to a Yagi on
the tower. A pair of fans circulates air across
the power supply and repeater heatsinks to keep things cool. The Hustler
G6-270 antenna is mounted above a microwave dish well up the tower, and
fed with 150-feet of LDF5-50 7/8-inch hardline.
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