442.925
OperationalOffset: + 5.0 MHz
Bandwidth: 6.25 kHz - Ultra Narrowband NXDN
Springfield
Coverage: Christian, Dallas, Greene, Lawrence and Polk Counties
Technical Specifications
Transmitter
Motorola MTR-2000
Antenna
Comprod 774-70TM
Duplexer
None
Controller
Repeater Builder MTR2K MMDVM
About This Repeater
442.925 Repeater - Springfield, MO (Queen City Digital Cluster NXDN / NexEdge Repeater)
On-Air Date: November 9, 2023
Repeater Transmit: 442.925
Repeater Receive: 447.925 (+ 5.0 MHz)
Modes: NXDN Digital & Analog
NXDN RAN Code: 1
Analog Access: DPL 165
Transmit Power: 40-Watts
Antenna System: RX: Comprod 774-70TM mounted at 380’ AGL
TX: Comprod 774-70 TM mounted at 360’ AGL
Link antennas: None
Coax Cable: Commscope LDF7-50 1-5/8” cable on both antennas
Controller: None
Repeater Motorola MTR-2000 with MMDVM Board
Combiner: Celwave TJD460-5T – 5-port combiner
Multi-coupler: Celwave
Link Radios: N/A
Backup power: UPS and Generator
Router: Ubiquiti Edgerouter X
Internet: Yes - Springnet
Nets: Thursdays @ 7:30 p.m. – REF059A – Central Missouri Digital Group D-Star Net
On November 9, 2023, the 442.925 went online as part of the Queen City Digital Cluster! The repeater uses a 100-W Motorola MTR-2000 set to 80-Watts fed into a 5-port transmit combiner with ~ 3 dBd of loss for a total of ~ 40-Watts output power to the Comprod TX antenna at 360’ AGL. An 8-Port receive multicoupler with bandpass filter connects the receive antenna at 380’ AGL to the 442.925 receiver.
View the repeater status at https://442925.nixahams.net/