SEMARA owns and operates three analog voice repeaters, plus an APRS digipeater station.  These four 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 dedicated 1-5/8" Andrews Heliax feedlines for its 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)
• 224.800 Repeater - 1.25 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.

In times of real emergencies, all normal communications must cease to allow for priority traffic.  This repeater is affiliated with 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.  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

More information on our 222 MHz and 902 MHz repeaters plus our 2m APRS station will be added in the future.