Reference Information
(Documents, Links And Images)



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Azimuthal equidistant map, centered on west coast. To determine a beam heading to a desired location, extend a line from center point to edge and read degrees.

UTC time is:




Common Frequencies

W7DG - LCARA Repeater (Columbia Heights)
147.26, + offset, pl tone: 114.8

W7DG - LCARA Repeater (Woodland)
147.30, + offset, pl tone: 114.8

W7AIA - Clark County ARC (Vancouver)
147.24, + offset, pl tone: 94.8

WA7UHD - Chehalis Valley Amateur Radio Society
147.06, + offset, pl tone: 110.9

NU7D Repeater
224.660, - offset, pl tone: 114.8

W7DG - LCARA Repeater (Columbia Heights)
444.900, + offset, pl tone: 114.8

AB7F Linked Repeater System- (Longview)
440.375, + offset, pl tone: 123.0


Link to Cowlitz County Repeater Information



A Few Photos
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The old tube shown above is known as a spherical Audion. The Audion was invented by Lee De Forest in 1906. This particular tube is a "double wing" tungsten filament circa 1915. The Audion was the forerunner to what is now generally known as a triode. A small amount of power applied to the grid could control a larger current from the filament to the plate, allowing the Audion to both "detect" radio signals (that is, make them audible) and to provide a modest amount of amplification. This Audion is an original from that era and was personally presented to Ralph Gasparotti W7WDZ (SK) by the inventor himself, Lee De Forest. Ralph’s estate donated it to the LCARA ~ W7DG. We are proud to own such an important and influential piece of early radio history.

Cowlitz County Repeater Information
Receive Transmit Access Tone Wide / Narrow Analog / Digital Frequency Shift General Location & Callsign
147.2600 147.8600 114.8 Wide Analog + 600 kHz Columbia Heights, Longview - W7DG
147.3000 147.9000 114.8 Wide Analog + 600 kHz Woodland Heights, Woodland – W7DG
145.1300 144.5300 114.8 Narrow Digital - 600kHz Rainier Hill, (C4FM) Repeater – N7DEM
147.1000 147.7000 114.8 Wide Analog + 600 kHz Columbia Hts., Longview (Local) – W7DG
224.6600 223.0600 114.8 Wide Analog - 1.6 MHz Rainier Hill, Rainier OR. – NU7D
224.1400 222.5400 114.8 Wide Analog - 1.6 MHz Columbia Heights, Longview - W7DG
444.9000 449.9000 114.8 Wide Analog + 5 MHz Columbia Heights, Longview – W7DG
441.7000 446.7000 CC1 Narrow Digital + 5 MHz Rainier OR., DMR Repeater – N3EG
444.7125 449.7125 CC1 Narrow Digital + 5 MHz Columbia Heights, Longview – N3EG
442.1250 447.1250 114.8 Wide Analog + 5 MHz Columbia Heights, Longview – N3EG
927.9750 902.9750 114.8 Wide Analog - 25 MHz Columbia Heights, Longview - KB7ADO