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 Motorola SLR8000 repeater running 100 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 are at about 95
feet above ground level. More information about our Digital repeaters can
be found on DMR
Montana. As backups, we have a
50 watt UHF Motorola SLR5700 repeater and a 2-Meter Motorola SLR5700 at
the site and ready to be put in service should either of the primary repeaters
experience a failure. Additionally as a service for Amateur users 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: 46.594643
-112.298904
70 CM Repeater Specifications:
Repeater Receive Frequency (Input):
449.1000 Mhz
Repeater Transmit Frequency (Output):
444.1000 Mhz
Transmit Output Power: 100 Watts
Effective Radiated Power: 625 Watts
DMR Color Code: 1
Static Primary Talk Group Time Slot
2: MPRG 1, Talk Group Number 31301
Static Secondary Talk Groups Time Slot
1: MPRG 2 Talk Group Number 31302,
BGV TG# 31303, MPRG Cluster TG# 8, MT Statewide TG# 3130 on Saturday 7-8
PM
ALL OTHER DYNAMIC TALK GROUPS: TIME SLOT 1 ONLY
Repeater Dashboard: MacDonald Pass
UHF BrandMeister Dashboard
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
2 Meter Repeater Specifications:
Repeater Receive Frequency (Input): 147.7000 Mhz
Repeater Transmit Frequency (Output): 147.1000
Mhz
Transmit Output Power: 50 Watts
Effective Radiated Power: 120 Watts
DMR Color Code: 1
Static Primary Talk Group Time Slot
2: MPRG 1, Talk Group Number 31301
Static Secondary Talk Groups Time Slot
1: MPRG 2 Talk Group Number 31302,
BGV TG# 31303, MPRG Cluster TG# 8, MT Statewide TG# 3130 on Saturday 7-8
PM
ALL OTHER DYNAMIC TALK GROUPS: TIME SLOT 1 ONLY
Repeater Dashboard: MacDonald
Pass 2Meter BrandMeister Dashboard
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 100 Watt UHF Repeater Photograph
Main 50 Watt VHF Repeater Photograph
Tower and Antennas Photograph #1
Drone Photo of the Tower
Microwave Antenna for Link to North Hills
Mac Donald Pass Propogation Map
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All Rights Reserved