MacDonald Pass Repeaters and Site

MacDonald Pass is the primary repeater site for the group. It currently has a 70cm repeater and a 2-meter repeater. The site sits at an elevation of about 7,155 feet and about 13 miles west of Helena. The tower sits within 30 feet of the Continental Divide and is 61 feet to the top platform, 93 feet to the top of the tower. The 70cm repeater is a Hytera RD-982 Dual-Mix repeater running 50 watts, the 2-meter repeater is a Motorola SLR5700 DMR repeater at 50 watts. The repeater operates on 2 seperate Celwave PD-1151 Stationmaster antennas for 70cm, and 2 seperate Telewave ANT135F2 antennas for 2-meters. These antennas sit at about 95 feet above ground level. The 70cm repeater is linked to the Echolink system to the Mac Pass Repeater Group servers. More information about our Digital repeaters can be found on DMR Montana. As backup, we have a 25 watt Hyera RD622 dual-mix repeater at the site and ready to be put in service should the primary repeater experience a failure. On the 2-meter repeater, we have a 25 watt MSF 5000 at the site and ready to be put in service should the primary repeater experience a failure. The Echolink system is virtually automatic and is set to stay connected 24 hours a day. More information about the Echolink system can be found at the link below. Additionally as a service for Amateur operators so equipped, a 25 watt APRS Digi-peater ("MACPAS") is operating at the site and is fed into a Telewave 2.5 Dbd gain antenna.

Repeater Location: North 46-35-40.7 West 112-17-51.9 (NAD 27 Datum)

70 CM Repeater Specifications:

Receive Frequency (Input): 449.1000 Mhz

Transmit Frequency (Output): 444.1000 Mhz

Transmit Output Power: 50 Watts

Effective Radiated Power: 300 Watts

PL Tone Required: 131.8 Hz, repeater encodes and decodes tone

DMR Color Code: 1

Call Sign: WR7HLN (Mac Pass Repeater Group)

Antenna Gain: 8db both Transmit and Receive

Antenna Pattern: Omnidirectional

Backup Power: 400 Amp Battery (approximately 5 days with 2 hours transmit per day)

Time Out Timer: 3 minutes resets on input signal drop

Echolink Control Codes and Information

2 Meter Repeater Specifications:

Receive Frequency (Input): 147.7000 Mhz

Transmit Frequency (Output): 147.1000 Mhz

Transmit Output Power: 50 Watts

Effective Radiated Power: 120 Watts

DMR Color Code: 1

Call Sign: WR7HLN (Mac Pass Repeater Group)

Antenna Gain: 2.5 Dbd

Antenna Pattern: Omnidirectional

Time Out Timer: 3 minutes resets on input signal drop

Main 50 Watt UHF Repeater Photograph

Standby 40 Watt UHF Repeater Photograph

Main 50 Watt VHF Repeater Photograph

Standby 25 Watt VHF Repeater Photograph

Tower and Antennas Photograph #1

Microwave Antenna for Link to North Hills

 

 

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