SEMARA owns and operates two analog voice repeaters, plus an APRS digipeater station.  These three systems are situated at the rear of club property below a 180 foot multiple tenant communications tower.  SEMARA, which has exclusive rights to the top of the tower, has three dedicated 1-5/8" Andrews Heliax feedlines for each of its three systems.

The tower also hosts numerous wireless providers through NETCOM, including AT&T Mobility, MetroPCS, Sprint Nextel, T-Mobile USA and Verizon Wireless.  Several public safety and commercial systems including repeaters for the Dartmouth Fire Department (District 1) and Tremblay's Bus Company, plus a voted receiver for the Dartmouth Police Department's digital P25 repeater are also located on this tower.

For more information on one of SEMARA's systems, simply click on its link to jump to a full description:

• 147.000 Repeater - 2 Meters (VHF)
• 927.8375 Repeater - 33 Centimeters (UHF)
• 144.390 APRS Digipeater - 2 Meters (VHF)

147.000 Dartmouth Repeater

SEMARA proudly owns and operates the 147.000 Dartmouth Repeater.  It carries the club call sign of W1AEC.  It is open to all radio amateurs without requiring membership.  This is a full service 100 watt repeater with an antenna height of about 150 feet above average terrain (HAAT).  The system features a wide-area coverage including all of Southeastern Massachusetts.  Fixed and mobile station coverage includes Providence and most of eastern Rhode Island, most areas south of Boston, and the western half of Cape Cod and the Islands.

This repeater is affiliated with Eastern Massachusetts ARES and is also the primary repeater for Massachusetts RACES (Region 2, Sector A).  Our sector's on-air RACES drill is held on this repeater the first Monday of each month at 7:30pm, followed by the ARES drill (with a direct RF link to MMRA) at 8:30pm.  In times of real emergencies, all normal communications must cease to allow for priority traffic.  The repeater has auxiliary power, with the ability to stay on the air for days at a time without commercial power.  If the site's primary 120 VAC power is lost, the 100 watt amplifier is switched out of service and the repeater runs at 20 watts output to conserve battery power.

Extending coverage beyond the limits of RF, this repeater system supports the the VoIP networks of IRLP and EchoLink for inbound and outbound connections.  These two networks allow any amateur using the repeater to link to other amateurs across the country or around the world.  The internet connection is provided by Comcast Business Class and is supplied to the repeater site building from the clubhouse via a control cable in a dedicated underground conduit.  Like the repeater itself, all amateurs are welcome to use these links without requiring membership.

Overview

Location:	NETCOM Communications Tower 54 Donald Street Dartmouth, Massachusetts
Established:	1974 (WR1ADR)
Call Sign:	W1AEC
Band:	2 Meters (VHF)
TX Frequency:	147.000 MHz
RX Frequency:	147.600 MHz (+600 kHz)
CTCSS (PL):	67.0 Hz
Output Power:	100 Watts (20 Watts Auxilary)
IRLP Node:	4347
EchoLink Node:	44347 (W1AEC-R)

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