Building your own MMDVM repeater

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n5amd
Posts: 30
Joined: Wed Apr 11, 2018 9:05 pm
Location: San Antonio Texas
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Building your own MMDVM repeater

Post by n5amd » Thu Apr 12, 2018 7:19 pm

Hey all!

I wanted share my home-built repeater using analog Motorola CDM radios. My hope is that folks can see that you dont need thousands of $$$ to built a digital repeater for a local community to use. Currently this repeater is serving the San Antonio Texas area and has about a 25-30mile coverage using a simple mobile duplexer. I have instruction on how to build one on the link below. You can use this to either build a full blown duplexed repeater, or a simple high powered simplex hotspot. Either way, the more infrastructure the better.

https://n5amd.com/digital-radio-how-tos ... -repeater/

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Last edited by n5amd on Sun May 05, 2019 4:06 am, edited 1 time in total.
Ben
N5AMD
www.n5amd.com

G0ANV
Posts: 4
Joined: Thu Apr 12, 2018 12:25 pm

Re: Building your own MMDVM repeater

Post by G0ANV » Thu Apr 12, 2018 9:44 pm

Hi tnx fer posting this article.
I've sent it to a ham friend in Fort Worth TX in the hope he will put a MMDVM Repeater together.
73
de
Daryl

KA9UCE
Posts: 7
Joined: Sat Dec 15, 2018 2:38 am

Re: Building your own MMDVM repeater

Post by KA9UCE » Sun Dec 16, 2018 2:07 am

Hello....

I am thinking about programming a couple of Maxtracs for use with MMDVM, and my Pi-Star ZUM radio.
Duplexer is a cheap mobile unit, but the skirts are tight, and notch is deep.
Tuned for:
RX: 449.700 (high)
TX: 444.700 (low)

Radio systems engineering is my profession, so I would be happy to share data and testing equipment.
Programming/Alignment:
Motorola analog, digital, DMR, P25.
Kenwood analog, DMR, NXDN.
Icom analog, (not currently supporting any D-Star systems)
B/K Relm analog, digital
ERNEST ERICKSON, KA9UCE
APPLIED ELECTRONIC COMMUNICATIONS
462.600/467.600, D432
444.700/449.700, D462
449.700 NXDN, RAN 9 ZUM PI-STAR(TEST)
[email protected]
602.290.6024

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