Brookline Repeater Site

The Brookline repeater went into service in September 2005 and is located at the Clay Center Observatory on Mt. Walley. This site is home to the Clay Center Amateur Radio Club, W1CLA, which operates a UHF repeater on 446.325 at the same location. Like all MMRA 2m repeaters, Brookline is a GE Mastr II receiver/transmitter controlled by an SCOM 7K.

Photo Description
The controller is at the top of the rack. Below this is the UHF repeater consisting of an Arcom RC-210 controller, two Motorola M120 transceivers, and an Astron RS-20M power supply.

The MMRA 2m repeater is the gold box below the UHF repeater. You can also see the black duplexers to the left of the rack.

Wind Power
The Clay Center has a 1500KW wind turbine. The control system for this turbine is the white box on the wall, above the rack. In the near future this will power the installation. We are awaiting the equipment so that the system will automatically switchover to commercial power when the wind system's battery voltage drops below a minimum. When we are done, we will be running battery power with commercial-power AC backup!

The 2m antenna is the DB224 on the right. You can just see the MMRA network link antenna at the bottom. The fiberglass vertical on the left is for the UHF repeater.
Here is a view of the MMRA link antenna. This antenna points directly to the MMRA hub on 449.925 MHz in Marlborough, about thirty miles away and Line-of-Sight visible from the Brookline location!


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