MMDVM Hotspot

Under Contruction.

Overview

A personal, low-power hotspot is a combination of hardware, firmware, and software that enables an amateur radio enthusiast with internet connectivity to link directly to digital voice (DV) systems around the world. Hotspots can link to DMR, P25, and NXDN talkgroups; D-STAR reflectors; YSF rooms; and so on.

Basically, hotspots are your own personal digital voice repeater and gateway, which can be really fun. Here’s a simplified diagram of what it looks like when you connect via your hotspot to a BrandMeister-hosted multiprotocol talkgroup, which enables people using different modes to talk with each other:

Diagram of DV HTs connecting via hotspots

For some people, who doesn’t live within range of a digital voice repeater, a hotspot goes beyond being fun to being a critical key to accessing digital voice systems, a gift that opens doors to the whole wide world.

Overall, this is an exciting area of amateur radio that is evolving and progressing rapidly with some excellent work being done by some very innovative hams.

Background

This is an article about personal, low-power hotspots, also known as personal access points, not repeaters. (For info about digital repeaters, see: How to make a MMDVM Digital Repeater by N5AMD and Repeater Builders.)

I’ve been playing around with my first personal, low-power hotspot since May 26th of this year, and I have been very impressed with the little unit. It has opened a new spectrum in this hobby, with my DMR HT.