Mmdvm repeater

Connect each different repeater by switching channels on the handheld radio or mobile radio. Digital hotspot: All digital hotspots have a default frequency information. The DMR radio only needs to set one channel. Adding different groups to the receiving group list can receive different signals. A DMR handheld radio like Ailunce HD1 has a ...

Mmdvm repeater. Keeper: Dave Porter - G4OYX View on UK Repeater. GB7VO - South Shropshire. Modes: Yaesu System Fusion/C4FM Output: 439.7000 MHz Input: 430.7000 MHz Spacing: 9000 kHz Digital: C4FM DSTAR DMR DMR: Colour Code 1 - Talk Group 9 Notes: This is an MMDVM repeater that is now internet linked Keeper: Matt Porter - G8XYJ View on UK Repeater ...

MMDVM Servers. Web-Team. June 11, 2022. MMDVM. We have added new servers, moved them to professional hosting and they are now available. Some may not yet have dashboards nor talkgroup decks listed as yet. For more information check out our MMDVM page. Visits: 115.240 -120. 94 -125. 50 -130. The STM32-DVM-MTR2K will saturate the MMDVM ADC input at signals much stronger than -30dBm. That's ok, I did that on purpose in order to keep the signal level at the low end up a little higher in order to improve ADC resolution for weaker signals. MMDVM Motorola MTR2000 MTR2K STM32-DVM-MTR2K.Going to use MMDVM and a pair of CDM1250s or similar but not super sure what software to use. I want to be able to capture messages from mobile handhelds and map GPS tracking data from mobiles in the field. ... I'm building a DMR repeater using MMDVM and some Motorola radios with discriminator taps. I have some DMR handhelds that broadcast ...MMDVM hardware and software is at the core of most digital mode hotspots on the market. The success of the MMDVM Project comes from countless hours of work by different people and projects going back to the earliest days on D-STAR. MMDVM now supports D-STAR, DMR, YSF, P25, NXDN, M17, POCSAG, and even analog. This project has become a truly ...MESA, Arizona Amateur, GMRS repeater database showing all open ham repeaters. Repeater Main Menu • Favorites • Add a Repeater • Edit a Repeater • MapBook • Reference Pages • Contact US: ... MMDVM NXDN 6.25KHz narrow band.... Add: D: 447.425 - KC7WYD: 107.2: Usery Pass: Arizona: 4 miles: Local: ECHOLINK Node..467435 RADIO AFICIONADOS ... Do you need to set up your MMDVM repeater on the BrandMeister network? This video will walk you through all the necessary steps for how to register your repe...

75.1 %. free Downloads. 10000+ "ham radio mmdvm repeater board" printable 3D Models. Every Day new 3D Models from all over the World. Click to find the best Results for ham radio mmdvm repeater board Models for your 3D Printer.How to upgrade the Firmware on the STM32_DVM_PiHat V1 (Green) Board. This guide assumes you are Running a Pi_Star image and that you wish to upgrade firmware on a STM32_DVM_PiHat . Log into Pi-Star's HTML configuration page, or connect to its IP address via SSH using a application such as PuTTY. Login Defaults -> usr:pi-star -- pwd:raspberry ...Configure Guide for MMDVM Repeater Kit Board (LinkerV3) Update 2019-12-01, I continue update in my Wiki website https://www.bi7jta.org/wiki ,now have …Update 2/10/21: Official group: https://dvswitch.groups.io NOTE: Make sure to match the TX and RX frequencies in the MMDVM_Bridge.ini it needs to function as a simplex node not a repeater for this to work as of 02/10/21. A lot has changed since my original article and there are new ways to install the tools:Start with Debian…HBlink provides a suite of programs for building and extending existing networks that use the Home-brew Repeater Protocol and OpenBridge protocols. These protocols are most commonly associated with MMDVM and the Brandmeister and DMR+ networks. The hblink3 repository is where current development is taking place, and is the Python 3 version of this project. HBlink is not a "plug and play ...Nov 20, 2022 · Functions: Build your DMR/YSF Digital repeater, hotspot use Analog radios, such as GM338,GM340,FT-7800, IC-2820, also support DR-1X, MTR2000, Tait This guide will help you get your MMDVM MTR2000 Repeater Board (Nano-Pi) online and running on the VK44 Network. Requirements. The below files and resources are required in order to connect your MTR2000 Repeater Board that has a Nano Pi to the VK44 Network. Pi-Star V4+ Image.Click Here To Download The MMDVM-Pi 1.0 Board Configuration Instruction Sheet! 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

DMR/D-Star MMDVM Repeater 430.2875Mhz (+9 MHz) DMR - CC07 TS1 FreeSTAR : TS2 BrandMeister D-Star GB7HA C - GB7HA G Note - No Static TG set up . GB3VR. ... DMR Repeater Located in Hatfield Herts 439.425Mhz - 9MHz split CC10 TS2 BrandMiester static TG Hubnet. TS1 DMR2YSF eg to connect to Southern Fusion use TG 7041893.HBlink provides a suite of programs for building and extending existing networks that use the Home-brew Repeater Protocol and OpenBridge protocols. These protocols are most commonly associated with MMDVM and the Brandmeister and DMR+ networks. The hblink3 repository is where current development is taking place, and is the Python 3 version of this project. HBlink is not a "plug and play ...The following radios have been approved to work as homebrew repeaters HF frontends: Motorola. Model RX TX Notes. CDM750 / 1250 / 1550LS WORK WORK Excellent TX & RX on all modes. CM140 / 160 / 340 WORK WORK EM200 (CM140) Very low BER at Rx (SV4QXF) Tx works (SQ6POG) EM400 WORK WORK -XE1HAX- TX / …The 1955 Corvette introduced a V-8 engine that greatly improved performance but wasn’t enough to bolster sales. Learn more about this classic car. Advertisement The 1955 Cor...This is a board that you can use to make a Home Brew DMR or Dstar Repeater! Open Source Multi-Mode Digital Voice Modemhttp://mmdvm.blogspot.com/

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K6PUW Multimode DV Repeater Welcome to California's first Wide area coverage MMDVM Digital Voice Multimode Repeater AFFILIATED WITH THE "KINGS OF DIGITAL" Covering Los Angeles and parts of Ventura, Riverside, San Bernardino and Orange Counties Please donate to help support this special Read More ...From the radio, must set radio to use EXT. DATA SPEED = 9600 bps and use 6-pin Mini DIN cable as specified by RepeaterBuilder.org (pin 4 "PR9" is audio output before discriminator). From MMDVM set TXInvert=0 and RXInvert=1. Note that TX audio gain must be set quite high for DMR to operate properly.Hi , just received my STM32 Board Rev 4 from Repeater Builder. I want to use the board for a multimode FM DMR repeater . The FW version on the Rev 4 Board I received is showing 2019-01-30 . Log files showing : MMDVM protocol version: 1, description: MMDVM 20190130 (D-Star/DMR/System Fusion/P25/NXDN/POCSAG) 12.0000 MHz GitID #ff7a9fd.The Callsign and Timeout values in the General section also apply to the FM controller, but these may be overridden in the FM controller configuration. Now to the FM repeater configuration. Here is the one in the example MMDVM.ini: [FM] Enable=1. # Callsign=G4KLX. CallsignSpeed=20.Every MMDVM board has the potential to be calibrated slightly different due to the tolerances of components during assembly. The following steps will calibrate the TX and RX of the board.

the Moto repeaters (e.g. MTR2000 and similar) with DSP receivers introduce a. 7ms delay which destroys DMR, so the MMDVMHost DMRDelay setting needs to be. about 165 to compensate. Jim - K6JM. From: [email protected] <[email protected]> On Behalf Of.There has been quite a bit of interest on the Round Table about the K6PUW MMDVM multi-mode repeater. This thread is for questions, comments and discussion of the various aspects of multi-mode repeaters. Please feel free to ask, and comment here. Also, please visit www.k6puw.com frequently for up to date information on the system and its status.This is the D-Star Repeater which controls homebrew repeater hardware and links into the ircDDB Gateway to allow for access to extra non-RF facilities, The hardware supported include: DVAP. DV-Mega (D-Star only) GMSK Modems. Soundcard repeaters (including UDRC) MMDVM (D-Star only) DV-RPTR V1, V2, and V3. Icom Terminal and Access Point modes.MMDVM BUYERS Although the MMDVM Dual (full-duplex with separate transmit and receive radios) is an open-source hardware design board, locating a board with the full-duplex open-source implementation, and especially a full-duplex implementation that is endorsed by the MMDVM developers, can be difficult. Despite an extensive search (prior to August 2018), a proper source was not discovered until ...Are you experiencing weak or unreliable WiFi signals in certain areas of your home or office? A wireless N WiFi repeater might just be the solution you need. Before setting up a wi...I tested with several DMR radios to get the levels right. I used a MD-380 as my benchmark, as it was far less tolerant of bad audio levels compared to my Mototrbo radios. I found the upper and lower levels of acceptability on the 380, then set the levels right in the middle. 2.http://www.pistar.uk/downloads/Pi-Star_OrangePi_Zero_V3.4.17_09-Jan-2019.zipThis is the D-Star Repeater which controls homebrew repeater hardware and links into the ircDDB Gateway to allow for access to extra non-RF facilities, The hardware supported include: DVAP. DV-Mega (D-Star only) GMSK Modems. Soundcard repeaters (including UDRC) MMDVM (D-Star only) DV-RPTR V1, V2, and V3. Icom Terminal and Access Point modes.About the first repeater (W9YT, the one works with Anytone but not with 7550): It's a somewhat funny mixture of a Kenwood repeater and an mmdvm host. Here are some details about this setup. The second repeater labeled itself as a DMR Marc repeater, and the handshake seems to be successful for both Anytone and 7550 on that repeater. However ...Designed for MMDVM Open Source Firmware Compatibility. NANO-NODE AE ALLSTAR HOTSPOT: Nano-AE is a small stand alone personal hotspot that allows connection with over 6500 Allstar nodes and repeaters worldwide. The built-in LCD touch screen display and menu based application software makes it very easy for users to operate and configure a node ...The RB_STM32_DVM is yet another Multi-Mode Digital Voice Modem that gives new life to analog repeaters by allowing them to become digital capable. The STM32 has an on-board microcomputer, so there is no …

After the article on the configuration and installation of a Nextion screen on a MMDVM repeater, let’s see together how to integrate a small OLED display on MMDVM. …

Each BCR Repeater includes FREE Programming! Just let us know the Tx/Rx Frequency, PL Tone In/Out, Station ID, Desired Transmit Output Power. If you order one of these packages, don't forget to add your RF JUMPER CABLES. UHF (400-470 MHz, 70cm) - 40 Watts Continuous Duty. Designed and assembled in the USA. 2 - year warranty.Oct 18, 2023 · The findmodem command returns this on both the new repeater and the existing one, also in an MTR2000 but that one is running original pi-star: Port: /dev/ttyS1 (GPIO) Baud: 115200 Protocol: V1. Modem Data: MMDVM 20190130 (D-Star/DMR/System Fusion/P25/NXDN/POCSAG) 12.0000 MHz GitID #b4647d8. Repeaters that support Talker Alias are Hytera repeaters (v8 and above) and MMDVM-based hostspots / repeaters. Radios supporting Talker Alias include Hyteras with (v8 and above) firmware and TYT radios running MD-380 Tools. For MMDVM-based repeaters and hotspots you will need to turn off EmbeddedLCOnly, I also recommend turning off DumpTAData ...Post a Comment. Note: Only a member of this blog may post a comment.MMDVM Repeater. Step 3 – MMDVM Repeaters (6 Dig ID) Via MMDVM. Only Repeater 6 DIG IDs can use the setting below. Gateways 7 DIG IDs join as Hotspot or contact us to …The 878 has a ranging mode which will periodically check if you are in range of the repeater- if it doesn't get a "handshake" back it will tell you. In theory it's a nice feature but kind of annoying in reality. Since you said "I can hear the analog side" I'm assuming it's cheap MMDVM repeater, running in dual mode.If I tune my MMDVM repeater using MMDVMCAL, I can fine tune the transmitter as necessary and use the test pattern calibration for CC1 ID1 TG1 and it works with no issue as simplex. Now when I put everything into repeater mode. The radio decodes nothing voice wise. All my commercial gear, and secondary GD77 with stock firmware running, has no ...Longitudinal studies play a crucial role in understanding the dynamics and changes that occur over time. These studies often involve the collection of data at multiple time points,...

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Getting my Motorola CDM 1550 LS radios to work on MMDVM and Pi-Star. This is one of many videos to come on how to build your own MMDVM repeater using Motoro...** Welcome to GB7RA the Wirral MMDVM Repeater ** GB7RA repeater is available on the following frequency. This repeater supports users of DStar & Yaesu System Fusion/ …A video showing basic calibration & tune up of an MMDVM hotspot or repeater build using MMDVM-Cal. This video shows how to adjust deviation and perform the "...Hello, I run two GR1225 repeaters using the MMDVM modems supporting both DMR and P25. To address your deviation question, yes, set the channel deviation to 12.5 KHz. I have older versions of the STM/MMVM boards, setting the deviation on those was a bit more complex, if you have the newer version, I believe version 4 or newer, Steve and team made the process much easier.Nextion to MMDVM Hotspot; Correct method for adjusting TXLevel #MMDVM_REPEATER August 2021 (1) May 2021 (4) April 2021 (3) 2020 (2) August 2020 (1) January 2020 (1) 2019 (18) October 2019 (3) September 2019 (3) August 2019 (1)K0RQ MMDVM Repeater – K0RQ. Introducing North Dakota’s first Tri-Mode Repeater. On 443.400+ MHz, the K0RQ repeater is capable of doing D-STAR, DMR, and C4FM. This …Correct method for adjusting TXLevel #MMDVM_REPEATER Correct method for adjusting TXLevel (Physical adjustment, non software adjustment). Detail method find the key words "2.5.29 Adjust TX Level with SDR" in the following link.ZUM Radio's mission is to develop and manufacture the highest quality communications equipment for amateur radio enthusiasts.They specialize in producing hotspots and digital mode repeaters - such as their best-selling ZUMspot and MMDVM-Pi products. They are also co-founders of, and regular contributors to, the MMDVM project.MESA, Arizona Amateur, GMRS repeater database showing all open ham repeaters. Repeater Main Menu • Favorites • Add a Repeater • Edit a Repeater • MapBook • Reference Pages • Contact US: ... MMDVM NXDN 6.25KHz narrow band.... Add: D: 447.425 - KC7WYD: 107.2: Usery Pass: Arizona: 4 miles: Local: ECHOLINK Node..467435 RADIO AFICIONADOS ... ….

If you love music, then you know all about the little shot of excitement that ripples through you when you hear one of your favorite songs come on the radio. It’s not always simple...Keep your brand relevant and boost your customer return rate using these 5 tips. Development Most Popular Emerging Tech Development Languages QA & Support Related articles Digital ...This is a simple way to implement a combined analog and multi mode digital repeater using a Kenwood TKR-750/850 radio. A Zimmerman MMDVM Pi-Hat was used for our modem, …Yield-to-worst calculations apply only to callable bonds, which are bonds with multiple call dates. Yield-to-worst is simply the call date with the lowest anticipated yield. Calcul...15 Software download. 15.1 RTL-SDR Lite for MMDVM. Welcome to BI7JTA'Wiki for MMDVM. Begin December 1, 2019, I will continue update this WIKI page instead of Google blog, I am working on MMDVM just for my hobby, I am happy to share my knowledge and resources about MMDVM open source project.On the "Configuration" screen of Pi-Star, set the "MMDVM Display Type" to "OLED". Next, click "Apply Changes". Next, select "Expert" ... Duplex Repeater (or Value Minimum Firmware 3.e7 Required) Half-Duplex on Hotspots) Setting DNR Mode: D-Star Mode: MMDVMHost Configuration 20 20 RF Hangtime: RF Hangtime: 20 20Building an MMDVM based Quad Mode Digital and and SVXlink Analog Repeater using a Kenwood TKR-850. Due to the lack of Digital Mode repeaters around my home QTH, I had been running MMDVM hotspots built around Philips / Simoco PRM80s on 2mx and Philips FM92’s on 70cm for around a year, with G4KLX based DSTAR hotspots using soundcards or DV-RPTR boards for several years prior to that.Open the Raspberry Pi Imager and click Choose OS. Scroll to the bottom of the list and click Use custom. Browse the to .img file extracted above and click Open. If the .img is on your Desktop or Downloads folder you can click your username on the left then select Desktop/Downloads.Oct 20, 2020 ... This video will should you almost everything i did to complete build Pi Star DMR Hot Spot. Pi 3: https://amzn.to/2H7V4Zy MMDVM: ... Mmdvm repeater, Using an SDR to see wave peaks sent from MMDVM-Cal. Using the command line in pi-star. What you will need. A dummy load; An MMDVM-radio style board; Pi-star; Any SDR with the app of your choice …, Ham Radio Repeaters. You can rest easy knowing your amateur repeater duties are being handled by a BCR Repeater. Reliable, versatile, and plenty of RF power to get the job done. Join the family of Repeater Trustees who've put their mind at ease. The BCR Repeater provides a feature rich repeater/base station. Packed with loads of RF power, …, May 3, 2017 ... Share your videos with friends, family, and the world., On the "Configuration" screen of Pi-Star, set the "MMDVM Display Type" to "OLED". Next, click "Apply Changes". Next, select "Expert" ... Duplex Repeater (or Value Minimum Firmware 3.e7 Required) Half-Duplex on Hotspots) Setting DNR Mode: D-Star Mode: MMDVMHost Configuration 20 20 RF Hangtime: RF Hangtime: 20 20, The DVM Host (dvmhost) software suite, provides the primary host computer implementation of a mixed-mode DMR, P25 and/or NXDN or dedicated-mode DMR, P25 or NXDN repeater system that talks to the actual modem hardware, and the networking core (dvmfne) that provides a centralized network service that interconnects DVM Host (dvmhost) and other endpoint applications allowing networked communications., Repeater Builder MMDVM not receiving. Hi all, I have a repeater builders MMDVM that will not receive anything. I am utilizing two Motorola CDM750s in duplex mode. Under normal operations, using fm, dmr, and p25, no lights or activity show up on the dashboard. Going into MMDVMcal, It's showing that its receiving just fine with 0 or nearly 0% BER., You will need 2 pcs. One that connects to the MMDVM board that will send data. The other HC-05 (or HC-12) will connect to the display and will receive the data. Only 3 wire connection is needed for one way data transfer., GB7RA repeater is available on the following frequency. This repeater supports users of DStar & Yaesu System Fusion/ C4FM. It will allow you to connect using your preferred digital voice (DV) mode. If you use a particular mode please follow the rules of etiquette for that mode, but most of all enjoy using the repeater., I have received numerous requests for detailed instructions and information on how I converted the Yaesu DR-1X Fusion repeater to a repeater capable of doing DMR, D-Star, C4FM (Fusion), P25, NXDN, or any combination of these digital modes by using Scott Zimmerman’s excellent and powerful STM32_DVM board running on a Raspberry Pi …, Getting my Motorola CDM 1550 LS radios to work on MMDVM and Pi-Star. This is one of many videos to come on how to build your own MMDVM repeater using Motoro..., A video showing basic calibration & tune up of an MMDVM hotspot or repeater build using MMDVM-Cal. This video shows how to adjust deviation and perform the "..., This is the source code of the MMDVM firmware that supports D-Star, DMR, System Fusion, P25, NXDN, M17, POCSAG, AX.25, and FM modes. It runs on the Arduino Due, the ST-Micro STM32F4xxx and STM32F7xxx processors, as well as the Teensy 3.5/3.6. What these platforms have in common is the use of an ARM Cortex-M3, M4, or M7 processors with a minimum ..., build a repeater or to use the radio for other purposes, like Echo-Link. In the next series of articles, I will describe how I mounted two TYT-TH9000(D) radios in a 19 inch rack shelf, built a common repeater controller interface, added supplementary cooling to the transmitter and tested the complete repeater with two different controllers., Application: This MMDVM kit enables the different mode of digital walkie talkie to communicate with each other, it supports DMR, D-STAR, P25 and works with UHF. Simple to Use: This is a fully-assembled device. It also comes pre-configured for a Wi-Fi network. Just set up a Wi-Fi network (temporarily) with your own router/access point so it can connect then you can access the device through ..., The MMDVM board for STM32 Nucleo allows to realize a DMR, Fusion, DSTAR and P25 digital repeater Read More … Categories MMDVM Tags mmdvm , STM32 Motorola accessory socket adapter, Had in test a cheap chinese MMDVM repeater board with a gm340. After long , long hassle i gived up. Even if rx is allmost ok , in tx can't manage to setup..., Using the forum here to gather information on the topic I found that a simple basic repeater system is composed of the following: 1. Dual-use or Omni antenna for transmitting (TX) and receiving (RX) signals. 2. Feedline or Hardline to connect the antenna to the duplexer. 3., The findmodem command returns this on both the new repeater and the existing one, also in an MTR2000 but that one is running original pi-star: Port: /dev/ttyS1 (GPIO) Baud: 115200 Protocol: V1. Modem Data: MMDVM 20190130 (D-Star/DMR/System Fusion/P25/NXDN/POCSAG) 12.0000 MHz GitID #b4647d8., Seller: yolanda.yyy ️ (209) 100%, Location: Shenzhen, CN, Ships to: WORLDWIDE, Item: 195330547751 MMDVM Repeater Board V3F4, with RPi 3B case, 3.5inch TJC Display, GMxx Cable. New update: 1, Have test support FTM-400D build high power hotspot (Need DIY the cable yourself , need the connector compoments , please send me message),, Are you experiencing weak or unreliable WiFi signals in certain areas of your home or office? A wireless N WiFi repeater might just be the solution you need. Before setting up a wi..., Re: Kenwood TK-8180 UHF radio’s for MMDVM repeater use. by N7GWA » Sat Mar 26, 2022 5:16 pm. I have a repeater utilizing two 8180's connected to a DVM, and its a great setup. Not sure about the front panel though. If you're worried about people messing with them, try disabling the buttons in the software. 2 posts • Page 1 of 1., Feb 19, 2020 · The STM32-DVM-MTR2K is a joint project between Repeater-Builder and WA0EDA. By sharing common design elements, we standardize firmware updates, troubleshooting procedures, and simplify the body of knowledge necessary to implement an MMDVM repeater. The WA0EDA Skunkworks thanks Scott Zimmerman, N3XCC for his willingness to collaborate on this ... , From the radio, must set radio to use EXT. DATA SPEED = 9600 bps and use 6-pin Mini DIN cable as specified by RepeaterBuilder.org (pin 4 "PR9" is audio output before discriminator). From MMDVM set TXInvert=0 and RXInvert=1. Note that TX audio gain must be set quite high for DMR to operate properly., Building a Digital Mobile Radio Repeater Part 1: MMDVM. Installing MMDVM on an STM32F4 NUCLEO board and assembling an interface shield. In this series of …, In today’s digitally connected world, a stable and reliable internet connection is essential. However, it can be frustrating when you experience weak or unreliable WiFi signals in ..., Pager Setting User Guide 0810/update 2023.12.04 #POCSAG, #DAPNET. Test send message to yourself. Run send message to yourself, change the Callsign. PLL or crystal, 137-199 MHz and 400-499 MHz, POCSAG. Please notice that the frequency you use. *One device just with 4MHz bandwidth. *The frequency can be customized in the frequency range, 4MHz ..., Explore a wide range of the best mmdvm repeater on AliExpress to find one that suits you! Besides good quality brands, you'll also find plenty of discounts when you shop for mmdvm repeater during big sales. Don't forget one crucial step - filter for items that offer bonus perks like free shipping & free return to make the most of your ..., Merry Christmas and Happy New Year 2019! Firmware upgrade UserGuide for MMDVM HAT (Simplex/Duplex/Repeater) made by BI7JTA. Important update ,from firmware v1.4.12 Frequency restrictions to avoid satellite interference. Please avoid the following ranges: 145...., Using the forum here to gather information on the topic I found that a simple basic repeater system is composed of the following: 1. Dual-use or Omni antenna for transmitting (TX) and receiving (RX) signals. 2. Feedline or Hardline to connect the antenna to the duplexer. 3., 53 bytes of MMDVM's DMRD message; Slot bit should be clear; Repeater ID field should be filled with peer ID of server; Stream ID should identify each unique transmission; Sequence number should start from 0 on each transmission; Any kind of call is accepted (group, private, data, CSBK, etc) HMAC-SHA1 signature 20 bytes in length; Plain text key ..., 2. This board has been applied in the GM300 GM3188 3688 950I 338 Vitex DR-1X, other types of repeaters and car stations need to be studied yourself. Product Description: The MMDVM is intended to be an open-source Multi-Mode Digital Voice Modem, which utilities the power of an ARM processor and a simple analogue interface board., Contribute to VR2VYE/MMDVM_HS_firmware development by creating an account on GitHub., The RB_STM32_DVM is yet another Multi-Mode Digital Voice Modem that gives new life to analog repeaters by allowing them to become digital capable. The STM32 has an on-board microcomputer, so there is no need for a separate Arduino or other processor board. This board, plus a platform running MMDVMHost is all that is required.