Boulder Hill Repeater and Site
The Boulder Hill repeater was
the second repeater to be put on the air. It is located on the Boulder Hill
ridge line about a mile west of Interstate 15 and about 7 miles north of
Boulder, Montana. It also overlooks the town of Wickes on the North side
of the hill. The site sits at an elevation of 6,160 feet and has a 50 foot
tower. The UHF repeater consists of a Motorola MSF 5000 repeater operating
at 110 watts. The repeater transmits and receives into a Decibel Products
DB-420 8-bay antenna located at about 55 feet above ground. The repeater
receiver also has the added help of a ARR GaAsFET preamp. The repeater works
in Helena, East Helena, Boulder, along State Route 69 to I90, Whitehall,
and many other locations. It also provides good coverage along I15 from
well north of Helena south to Butte. This repeater is planned to be permanently
linked to the MacDonald Pass repeater sometime in the spring of 2004.
Repeater Location: North 46-19-51.7
West 112-6-16.4 (NAD 27 Datum)
70 CM Repeater Specifications:
Receive Frequency (Input): 444.2000 Mhz
Transmit Frequency (Output): 449.2000 Mhz
Transmit Output Power: 110 Watts
Effective Radiated Power: 675 Watts
PL Tone Required: 131.8 Hz, repeater encodes tone
Call Sign: WR7HLN (Mac Pass Repeater Group)
Antenna Gain: 9.5 Db
Antenna Pattern: Omnidirectional
Backup Power: 150 Amp Battery (approximately 36 hours with 3 hours transmit)
Time Out Timer: 3 minutes resets on input signal drop
Repeater Photograph
Tower and Antenna Photograph
Antenna Closeup
