Gmsk sound card modem software

G4klxs latest dstarrepeater release includes support for multiple modem platforms including. Note to the extension set to the same gateway software that callsign extension. When you select sound card for your tnc type or if press the options button in the middle of the tnc setup window, underneath tnc subtype, the program will bring up the soundcard modem tnc setup window which looks like this. It is currently capable of both sending and receive packets at 1200 bps afsk. This group is to support the ircddb gateway package. It can also be used as a virtual tnc for other applications such as aprsis32, uiview32, xastir, aprstw, yaac, uiss, linux ax25, sartrack, rms express, and. This amateur radio web site explains how to use the agwpe utility program to send and receive packet using the sound card of your pc instead of a tnc. Software for these two devices is continuously under development and new versions are regularly released from a number of developers independent of robin. Gmsk is probably most widely associated wit the 2g gsm mobile communications system where it proved to be an effective form of modulation. Connecting your gsm modem with a serial cable is a very secure way to use a gsm modem. Raspberry pi a low cost platform for amateur radio projects. Repeater usage overview this is an analogue and dstar sound card, gmsk modem, dvap, dvrptr modem, dummy, and split repeater control unit that runs under windows and linux.

Msk is little used on hf, but has been widely used on lf, notably at 100. Earlier versions of cocoamodem are available for older os x operating systems. The analogue repeater includes most of the features expected of a repeater logic unit, while the dstar repeater mimics an icom dstar repeater. But never the less the information can still be useful for those that start with decoding satellite telemetry. Raspberry pi dstar hotspot stepbystep m a r y l a n d d s t a r h t t p. One of the first multiplatform sound card packet radio modems was coded by thomas. Gsm modems are optimized for sms and data transmission and often support advanced options like automatic resets and onboard software. Cw, dominoex 458111622, feldhell, fskhell, fskhell 105, mfsk81616pix, psk31.

Jun 09, 2019 its purpose is merely to let me load up software. Sample configurations of gmsk 9600 bps via sound card. Fortunately, that minidin is fairly standard across manufacturers. Until you install the operating system, the default user live no password. Radio amateur alejandro santos lu4ext is developing extmodem an open source aprs compatible ax. I am developing a software dualport packetradio tnc that uses a soundcard as a modem and supports ax. Agw express by w2yg is no longer supported due to changes in winlink express formerly rms express that now allows the use of the uz7ho sound modem. Compared to traditional tncs or the agw software it is lightyears ahead in performance and rivals the best of the expensive dedicated modems produced by a wellknown german company. This is the smallest fsk modulation index that can be chosen such that the waveforms for 0 and 1 are orthogonal. This collection of software programs is included on the dvd of sound card. Basic agwpe program configuration sound card packet.

Gmsk is a highly bandwidth efficient scheme which is currently popular in gsm based cellular mobile systems. The main feature of this program is that it is currently running three different demodulators in. Start a new configuration with file new configuration. It can be used to decode packet radio, aprs and telemetry from amateur radio satellites.

The agwpe is connected to an scs tracker modem which runs 9. It enables existing fm repeater owners to establish a d star repeater with a choice of interface hardware gmsk modem or sound card, software and radio hardware. Supports two alternative modems including the q15x25 mode 15 qpsk. The flexnet windows packet software also has a newqpsk q15x25 option.

The soundmodem has two tcpip interfaces to link with client application. Configuration dstar repeater software for proper operation, at least the callsign and modem tab has to be set. There are several excellent software applications for your hotspot. I am currently working on my thesis simulating the gmsk modem. The second port can be any of a variety of external hardware or software based tncs on either 1200 baud vhf or 300 baud hf. The performance of a mobile communication system is dependent on the efficiency of. Windv also known as dv node for windows by fred van kempen, ka4ybr. The links for the sound card and gmsk modem based homebrew software is below. As part of this development he provides the software or dv tools that goes with his hardware. Sergua6 the reason of creation of this article is the interesting discussion on our forum, the second reason is that iv got email with same subject to discuss, after all i saw same problem discussed on the one of internets forums.

It has been reported that if bitblocker is enabled, it needs to be disabled in order to disable driver signing. Callsign and module c must be identical in dstar repeater and ircddbgateway. Ft991 setup for digital modes with only a usb cable. Implementation for gsm using gmsk modulation in dsp. This is a modem for afsk ax25 packet 1200 bps aprs compatible. Yaesu scu17 cat and sound card interface with builtin sound card the yaesu scu17 is an interface to run with digital operating modes for almost all current yaesu transceivers.

The modulator is configured for a data rate of 8 kbps and a bt product of 0. Fsk packet modems implemented as dsp via sound card or over q15x25. Additional modules can be added later please refer to the free star admin manual for details. I first differentially encoded my bitstream and then separated the incoming bitstream into i and q bits serial to parallel.

Application note gmsk practical gmsk data transmission. Free star currently does not bypass the need for an enduser to ownuse a dstar radio to access dv enabled repeaters. The split repeater is also an oddity as it used to split the dstar data between more than one transmitter and receiver. I then convolved both the i and q bits with the gaussian filter using gaussfir, bt.

The process described in this quick install guide sets up one rf module either one gmsk modem or one sound card module. Information on the software programs can be found at the software modems page. A variant of msk called gaussian minimumshift keying gmsk is used in the gsm mobile phone standard. The dstar repeater exists in four flavours, the first works with a sound card to modulate and demodulate the dstar gmsk data, the second works with dstar gmsk modems using either satoshi or dutchstar firmware, the third uses the dvap, and the fourth uses the dvrptr dsp modem.

Works with a sound card to modulate and demodulate the dstar gmsk data, 2. Introduction the first dstar repeater developed by myself was the original sound card repeater in 2009. Some say it is the same sound card that is in the yaesu scu17, yaesus equivalent of the signalink device. The agwpe sound card modem is capable of both 1200 and 2400 baud afsk. Tnc2, kpc3, pk232, etc, a kissinterface hardware tnc i.

Oct 27, 2016 the ft991 comes with a built in sound card. Stardv ambe3000 with codec works with stardv software plus bluedvambe, windv and other software expecting. Module character depends on the frequency band in use. I had been running an aprs rfto internet gateway an igate for a few months using a soundcard modem. Gmsk modulator on the tms320c67 16bitfloating point processor.

It can be used standalone to observe aprs traffic, as a tracker. The fdmdv modem and codec 2 speech codec used in freedv are also open source. Works with dstar gmsk modems using either satoshi jk1zrw or dutchstar firmware from fred n. Mar, 2020 fast gmsk modem software drivers gmsk modulation optimises data throughput and packet data handling eases c processing. The software allows a standard pc soundcard to be used as a packet radio modem with all processing done on the main computer cpu. Gmsk 4800bd, nfm, 15khz, hs soundmodem, fecmobitex. Most of the popular soundcard interfaces will work. Uz7ho sound modem in operation the screen capture shown is uz7ho sound modem running on 14101.

Introduction there are a number of factors that influence the choice of a modulation scheme for use in a wireless communication. My name is sergey, i was born in the 1963 year and live in moscow, russia. Soundmodem is a multiplatform soundcard packet radio modem written by thomas sailer, hb9jnxae4wa. Be an open standard, with a high performance open source implementation. The first port is the psk gmsk fmsk sound card mode. Fast gmsk modem software drivers gmsk modulation optimises data throughput and packet data handling eases c processing. The dstar repeater uses a sound card, the dvrptr repeater uses the dvrptr modem, the dvap node uses the dvap, the gmsk repeater uses a gmsk modem, and the dummy repeater uses the dvdongle but no radio interfacing hardware. The dstar repeater dedication this document is dedicated to the memory of jim thisdale n1jmm who was an early adopter of my software and was extremely helpful to people trying to get going on dstar with it. It can be used standalone to observe aprs traffic, as a digipeater, aprstt gateway, or internet gateway igate. Dvmega gmsk node adapter installation manual setting the dstar repeater software. Jul 20, 2011 sample configurations of gmsk 9600 bps via sound card. This is a brief summary of the software included, while not. People get frustrated when told to upgrade all of their radio hardware to one particular brand to use dv. Gmsk the spectrum width is almost close to theoretical limit of br, slightly worse noise immunity in comparison with msk, and the complexity of the modulatordemodulator same as for msk.

However, the ft991 also do fsk rtty as well as cw, with its built in sound card something that the signalink cannot do. Sdv will optionally work with a gmsk modem have qsos in the shack without a dstar radio while providing your own hotspot for outside and mobile access to the dstar network sdv on windows and linux desktop has a great graphical interface supports dprs maps, callsign and user message display, and easy linking and unlinking. Qtmm is a simple afsk1200 decoder that uses the computers sound card for input. Jun 04, 2009 fsk, gfsk, msk, gmsk and some other modes. The first modem is thomas sailer hb9jnx ae4was multimon, the other two are described by sivan toledo 4x6iz in an article in the julyaugust 2012 issue of qex.

Give the configuration a name more descriptive than test select the newly created configuration on the left hand side and the right side will populate. Dvap dvmega dvrptr v1 dvrpyr v2 dvrptr v3 gmsk modem sound card split. Welcome to my personal page,website about radio amateur digital modes since 1999. Gmsk modem yaesu ft2600fm 9600 bps capable the internet ethernet. Offers an experimental approach to the implementation of a vendor neutral, and open source, digital communication network. Halfmodes the twofaced signals, such as msk and gmsk i name halfmodes, ofcourse, it is not the standard name. How can one decode satellite telemetry signals using a sound card modem. Free star enables existing fm repeater owners to establish a d star repeater with a choice of interface hardware gmsk modem or sound card, software and radio hardware. Gmsk, wireless communication, cellular system, computer simulation 1. This program when used with either an icom idrp2c based repeater stack or one or more homebrew repeaters sound card, gmsk modem, dvrptr modem, and dvap, allows them to connect to the ircddb system. Thomas sailer, hb9jnx, who developed the sound card drivers, provided. Software robin cutshaw aa4rc is the developer for both the dv dongle and dvap hardware. Gaussian minimum shift keying, or to give it its full title gaussian filtered minimum shift keying, gmsk, is a form of frequency modulation that is used in radio communications systems.

To decode the 19k2 9k6 telemetry use soundmodem software by uz7ho. It is under development and is currently capable to both send and receive packets. Software running on the raspberrypi reads the audio signal coming into the soundcard, demodulates the signal, decodes the packet and then sends it to an aprsis server over the. One thing thats being done is to use the 9600 baud connection to feed the gmsk receive data from the discriminator ahead of any audio processing to a specialized modem in order to do digital voice with dstar. In case of agw pe interface, this modem is a direct replacement of original agw packet engine and emulates agw pe api. For the gmsk modem option, the script assumes that the default pid address of the gmsk modem is set to 0x300. Starboard dstar gmsk node adapter from matrix circuits for dstar hotspots to work with dstar radios to extend the dstar network to your amateur radio qth the starboard gmsk node adapter or gmsk modem is inexpensive and works with your spare analog fm transceiver. Dire wolf is a software soundcard modemtnc and aprs encoderdecoder. An entry level implementation using freely downloadable software that runs on a pc, a sound card, and legacy fm radios through the micspkr ports. It has been tested on windows xp, vista, 7, 8, 10 and has proved stable in operation.

Initial offering will result in a fully functional one or two radio ax. This article reprinted with permission from wireless design and development, january 1995, volume 3 number 1 1998 mx com, inc. It is recommended that dstar repeater version 20140208 or later to use. This information is based on one of my first telemetry decodes and can be outdated on some points. First some general information regarding hardware and software versions. The second port can be any of a variety of external hardware or softwarebased tncs on either 1200 baud vhf or 300 baud hf. No extra drivers are necessary and the cable can be fixed tightly to the server and the gsm modem. Here you find uz7ho soundcard packet modem and be able to download it. Mode should be set to simplex for a hotspot and duplex if you run a repeater. From a software design perspective, the modem is simply a slave device on a communications bus, and the controlling system usually the master on that bus is responsible for setting up and initializing the modem for use in any mode of operation. The scu17 works as a usb sound card, therefore only one usb cable is required between interface and computer.