Welcome to our 2-meter repeater information page



  The St. Mary's County Amateur Radio Association built a 2-meter amateur radio FM repeater that has been continuously operating for over thirty years.  Complete information about this repeater system is included below.  If you have an interest in assisting our technical team with maintaining and upgrading this capability, please give Pete (WA3UMY) a call or click [ here ] to send him a message and volunteer!


Repeater technical data:

Frequency output = 146.640 MHz

Frequency input = 146.040 MHz

Carrier access (no PL or sub-audible tones required to access)

Location:  Hermanville, Maryland (2.5 miles south of Lexington Park, Maryland)

Antenna:  Celwave Super-StationMaster 5.2 dBd gain vertical fed with Andrews 7/8" Heliax

Antenna height:  140' AGL (265' AMSL)

Repeater:  Motorola MSR-2000

Controller:  Advanced Computer Controls RC-850

Duplexer:  Celwave (6 cavities)

View of the concrete equipment shelter at the repeater site


View looking up the 150' tower from the front gate


Side view of the tower showing the side-mounted repeater antenna at the 150' level


Closer view of the side-mounted Celwave Super-StationMaster antenna


View of the repeater (left cabinet), RC-850 controller (on top), and duplexer cabinet (right)


Closer view of repeater showing detail of antenna feed line and grounding bar


View with cabinet covers removed


Internal view of duplexer cabinet showing the
6-cavity Celwave duplexer 'cans' and Bird wattmeter panel


View of the repeater cabinet with front cover removed


(Note:  All pictures were taken on Tuesday, 6 May 2008 when the repeater controller was replaced)

Copyright 2003-2008, St. Mary's County Amateur Radio Association
 All rights reserved.