The Peninsula Amateur Radio Club operates and maintains a 2 Meter repeater on 145.230 MHz. with an off-set of minus 600 KHz. and a 70 CM machine on 442.9 MHz with a plus 5 MHz off-set (100Hz PL tone required). The 2 Meter repeater operates at 100 watts output with an antenna height of 150 ft. Both of these machines are "open" and are available 24 hours a day. Autopatch service (allows you to make telephone calls via amateur radio) is available on both repeaters for PARC members only. Both machines operate under the call sign W4MT. The 2 Meter machine has an operating radius of approximately 40 miles while the 70 CM machine currently has somewhat less range.
RECENT MAINTENANCE ACTIVITY
Over the past few months there have been reports of reduced performance and inteference on the 2M machine. Actions are being taken to isolate and correct the problem. In this direction, during this month (May 2004) The transmission line to the antenna was replaced. There have been reports of improved performance, however signals from weaker stations seem to be "scratchy". We are continuing to investigate.
Some Pictures of the Repeater Station
MAY TAKE A PAUSE WHILE LOADING .. PLEASE STAND-BY!
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The operating view of the 2-meter, 440 repeater. the rear cabinet holds the 2 meter and the front the 440. The white documents affixed to the fronts are Xerox copies of the W4MT liscenses as required by FCC rules. The cabinet to the left is a commercial repeater.
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A front view of the 2-meter repeater with the cabinet door removed. The Link controller is at the top. This controller operates both repeaters. Next is a metering panel, power amplifier, a chassie holding some repeater control cards, the reciever, and finally the power supply.
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A rear view of the two meter repeater. At the top is the controller (used for both repeaters), next is a metering panel with a power sensor, the coax goes to the duplexer which is not shown in the these photographs, the cooling fins of the power amplifier (One watt in - up to 100 watts out. We usually run about 70 watts.) and finally a rack of reciever controllering cards, most of which are not used. The reciever and power supply are below but not shown.
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The duplexer (top) and part of the reciever of the 440 repeater.
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Another view of the 440 showing part of the power amplifier.
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Charlie Stokes makes one of the many delicate adjustments to a critical repeater part.
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