Boston/Back Bay


Like all MMRA 2m repeaters, the Boston repeater is a GE Mastr II receiver/transmitter controlled by an SCOM 7330. However, '82 is the only MMRA 2m repeater that does not use a DB224 antenna. Due to its very high location, the much smaller Diamond X30 is in service as both main transmitter and link antenna.

The 146.82 repeater has a local receiver with a PL of 127.3. This receiver is good in the Boston downtown area out to Kenmore Square. For areas beyond this, there is a remote receiver located at our Brookline site, which requires a PL of 146.2. People should use 146.2 in most areas outside of downtown. Linking to the HUB is done from the Brookline site.

Our site host provides us with about 3 feet of rack space. The SCOM controller is at the top. Below that is the Astron switching power supply followed by an APC remote power switch. The GE MastrII TX/RX is on the bottom. The Motorola GM300 link radio, used to pick up transmissions from the remote receiver site, is built into the MastrII and is not visible. You can see the 6-cavity Sinclair duplexer behind everything. Just to the right above the power supply, you can see the DCI bandpass filter and Raspberry Pi, which allows us to access the controller over the internet.

Here's the MMRA's X30A on its high perch
Looking down on the 927.0625 site from the 146.82 site

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