The Bendavis 444.775+ repeater, PL 110.9 Hz went online on Tuesday, June 2, 2020. The repeater is a 110-Watt Motorola MSF-5000 with a Sinclair Q3220E 4-cavity duplexer. The SCOM 7330 Repeater Controller is used to control the repeater and a Samlex 12vdc power supply supplies power for the controller and cooling fans on site.
On the tower we are utilzing a Comprod 774-70TM 8.5 dBd gain antenna with all elements directed Northeast at 45-degrees. The antenna, top mounted at 300′ AGL on the tower, is fed with ~ 375′ of Commscope AVA5-50 7/8″ heliax
The 444.775 acts as the Eastern “Hub” repeater for the SMLRS currently linking the Rolla 146.820 and Willow Springs 146.985 repeaters together and also providing the communications for all 3 repeaters to the Western half of the system via a dedicated RF link OR via a dedicated T1 data circuit with cellular backup!
As with all SMLRS sites, this repeater is equipped with emergency UPS and generator backup shelter and is installed in a hardened and climate controlled shelter to help maximize up-time and make sure the repeater is operational when it’s needed most – during a disaster.
Special thanks to the following individuals and entities that donated equipment to make this repeater a reality:
- Johnson County, KS Emergency Communications Department
- Cecil Higgins, AC0HA
- Missouri Hospital Association
Numerous cash donations were also provided by members of the amateur community in Southwest Missouri to help pay for the tower work to be completed.