North Hills Repeater and Site
The North Hills repeater is
located at our site about 13 miles north of Helena, Montana along the east
side of Interstate 15. The site sits at an elevation of 4,680 feet and has
a 140 foot tower. The UHF repeater consists of a UHF Motorola MSF 5000 operating
at 75 watts and has an ARR GaAsFET Preamp on the receiver. It is operating
into a Decibel Products DB-420 8-bay antenna at the top of the tower and
fed with inch and 5/8s heliax. This repeater is intended to be a local use
repeater only and will not be permanently linked to the rest of the system.
Testing has indicated that the coverage is great for local Helena and surrounding
area users. The Helena Valley, North along I90 to Sieben Flats, South to
Boulder Hill and Boulder, East to Winston, West to Elliston, and the north
and northwest valley is all covered fine.
Repeater Location: North 46-46-12.4
West 112-1-40.9 (NAD 27 Datum)
70 CM Repeater Specifications
Receive Frequency (Input): 443.9000 Mhz
Transmit Frequency (Output): 448.9000 Mhz
Transmit Output Power: 75 Watts
Effective Radiated Power: 405 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: 300 Amp Battery (2 days with 2 hours transmit per day)
Time Out Timer: 3 minutes resets on input signal drop
Repeater Photograph
Tower and Antenna Photograph
Antenna Closeup
