MMDVM stands for Multi Mode Digital Voice Modem .
What does a MMDVM do?
However, as a reminder the MMDVM devices are digital radio hotspots , with a transmitter power of around 10mW. They act as personal repeaters, so that you can connect to a variety of digital radio networks (D-STAR, DMR, C4FM, P25, NXDN) using a digital handheld.
What is Mmdvm repeater?
The MMDVM is a hardware and software component that can interface radios to a computer, like a raspberry pi, turning normal analog radios into digital radios, much like a TNC for packet radio. The MMDVM-Repeater board is a lot like a hotspot, except it doesn't have a radio built onboard.
What is MMDVM board?
MultiMode Digital Voice Modem (MMDVM)
Designed for repeater and high power hotspot applications (Additional Hardware Required: Radio(s) and Raspberry Pi) Fully assembled and tested full sized Pi format PCB, Mounts cleanly on RPI 2 and 3.
What is DMR hotspot?
A DMR hotspot is a gateway that allows your radio to connect to a digital network like Brandmeister or DMR-MARC . You can also use your hotspot to connect to other digital network's like Yaesu System Fusion and D-Star. Most hotspots operate as a simplex gateway.
What is an Mmdvm hotspot?
✔➸ MMDVM hotspot is a fully-assembled device . ✔➸ HOTSPOT comes pre-configured for a Wi-Fi network. SSID: Pi-Star (or Pi-Star-Setup) Password: raspberry, Just connect to temporarily WIFI: pi-star then you can access the device through your web browser using Pi-Star.
What is DMR ham radio?
DMR stands for Digital Mobile Radio and is an international standard that has been defined for two-way radios. The DMR standard allows equipment developed by different manufacturers to operate together on the same network for all the functions defined within the standard.
What is a jumbo spot?
Jumbo SPOT RTQ is a completely self-contained digital hotspot supporting DMR, Dstar, P25 and System Fusion communications. Fully assembled and tested in a ruggedized aluminum enclosure. All that's required for operation is a mini usb (android phone ‘s cable)power source and a WiFi based internet connection.
How do DMR repeaters work?
DMR repeaters, just like the analog repeaters, have an input frequency and an output frequency. Analog repeaters use analog PL/DPL tones as a gate to the repeater . These tones are like a “key” to open the repeater to repeat what it's receiving. If it doesn't receive the PL/ DPL, it ignores the signal.
Do I need a DMR hotspot?
Yes, you need a DMR hotspot . A hotspot is simply an internet gateway to a particular DMR network (Brandmeister/TGIF). DMR Hotspots have become very popular due to the expansion of the Brandmeister Network in recent years.
How does a DMR radio work?
DMR is a TDMA mode (Time Division Multiple Access) which means that it allows several users to share the same frequency channel by dividing that signal into different time slots . Each frequency has a slot 1 or slot 2 and each slot can be used by different users. ... There are 6 different “flavors” of DMR.
What frequency should I use for DMR hotspot?
DMR is 7.6 kHz wide. If this is the correct one for Northern Cali, then the freqs 431.4 – 432 and 438.35 – 438.75 (minus a gap or two) seem ok. Is the issue that if somebody is using a hotspot they are blocking whatever frequency they are using for everybody in the country?
What is a PI-star?
Pi-Star is a custom, pre-configured SD Card image for the Raspbperry Pi (and other ARM based single board computers). Pi-Star is the whole image, it is made up of a number of software components, but Pi-Star is the sum of its parts.
What is an Ambe server?
0.3 – Quick Start Guide. The ZUM AMBE3000 server is a standalone board gives USB, Wi-Fi and Ethernet connectivity to do DSTAR/DMR/FUSION/P25/NXDN audio compression/decompression. It is supported by a number of apps and programs such as BlueDV, DummyRepeater, Buster and Peanut.
What is Pi-star used for?
Pi-Star is great software for digital voice hotspots and repeaters . It can handle DMR, D-STAR, and YSF, and even P25, NXDN, and YSF and DMR cross modes when used with a multi-mode digital voice modem that supports those modes.
