Upgrade to the 27 repeater

Once again, the Lawrence County EMA, TVA, and the Bankhead Amateur Radio Club joined forces to upgrade communications equipment to improve service to our community. Rex & Harlie installed and tested a new Henry amp that boosted the 27 repeater from about 34 watts to 97 watts (going into the duplexer. When accounting for losses in the duplexer and feed lines, this means about 65 – 70 watts will be going into the antenna (about three times more power than before).

Rex & Harlie followed a thorough test procedure, insuring the power supply was adequate, then testing and adjusting the input into the amp, then a complete system test. The new amp allows the repeater to run at only 4 watts, which should extend it’s lifespan. The Henry amp is rated at 100 watts, but is being run at a conservative 97 watts for longevity.

David, KE4DIS provided external confirmation using his base station, a mobile unit, and finally a handheld radio. Thanks to everyone who joined in this improvement project!

Rex & Harlie preparing the cables for the power supply to the new amp

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