146.685

146.685 Repeater - Springfield, MO

On-Air Date:                   April 25, 2018

Repeater Transmit:         146.685

Repeater Receive:           146.085               (-600 kHz)

Modes:                              DMR, D-Star, Fusion, NXDN & P25

Color Code:                       5

Color Code Direction:      Encode & Decode

NXDN RAN:                        1

NXDN Ran Direction:       Encode & Decode

P25 NAC:                            656

NAC Direction:                  Encode & Decode

Bandwidth:                        12.5 kHz Narrowband – DMR, P25 and Fusion

                                           6.25 kHz Ultranarrowband – NXDN

                                          25 kHz  Wideband – D-Star

Transmit Power:               40-Watts

Antenna System:              Comprod 874F-70TM-1/4 - 175' AGL

Link antennas:                   N/A

Coax Cable:                        Commscope AVA5-50 - 7/8" heliax

Controller:                         Repeater Builder MTR-2K MMDVM

Repeater                            Motorola MTR-2000 w/ MTR2K MMDVM

Duplexer:                            Wacom WP-639

Link Radios:                       N/A

Backup power:                  Tower Site Generator

Router:                               Cradlepoint with Microtik Switch

Internet:                             Verizon

Nets:                                   Wednesdays @ 7:00 p.m. - Ozarks All Digital Net - Fusion Room 31291

                                           Wednesdays @ 7:30 p.m. - Missouri Statewide DMR net - TG 3129

On April 25, 2018, the 146.685 repeater went online using a pair of Motorola CDM VHF radios and a repeater builder STM32 MMDVM Version 2 board with a Raspberry Pi 3B computer.  The repeater transmitted 25-Watts and was capable or DMR, D-Star, Fusion and P25.  About 2 times a year the micro SD card would become corrupted and would have to be erased and the MMDVM would have to be set up again.

With interest in the Kenwood NXDN / Icom iDas digital mode, Justin Gann, N0ANI, donated the money to purchase a new MMDVM that would also support those modes in February 2020. 

The club purchased a 40w Motorola MTR-2000 repeater and the MTR2K MMDVM slide in board with on board Pi Zero computer and placed it online in March 2020 with the new MMDVM that also supported NXDN and iDas digital modes.

View the repeater status at https://146685.nixahams.net/

Hints for use:  Since this repeater is a multi-mode repeater, it is first come, first serve.  If someone is using Fusion, it will remain Fusion for a short time after the last Fusion transmission before moving back to a "listening" mode where it is scanning for any digital signal.