If you have a interest in digital speech over hf radio you could also take a look at a pc based system called freedv. After installing the edirol driver, the flexradio driver, and the power sdr software, i was able to start the software for the radio. This is an evolutionary process where radios from flex radio systems play a leading role. All you need is a pc and 2x sound cards and your away. Freedv waveform how to guide description package info attached files the freedv waveform howto guide describes the basic operation of the freedv fdv mode based on codec2 that can be added to any flex 6000 signature series software defined radio. With this operating system, a person may tune shortwave broadcasts, amateur radio, aeronautical, maritime, or other signals received at remote servers around the world. Fm repeater ondersteuning, instelbare shifts, simplex en ctcss toon. Freedv is a free, open source, digital voice communications system for hf amateur radio, which uses the codec2 low bit rate vocoder voice coder decoder developed by david rowe, vk5dgr. In fact you can run conventional thick client sdr software such as hdsdr or even powersdr or rocky.
Be prepared and able to communicate in case of emergency with the largest selection at. Compatible with ssb radios, freedv provides communications voice audio occupying less than half the bandwidth of conventional ssb. Flexradio flexradio systems announces the immediate availability of smartsdr v1. Lane ve7ihl has provided instructions how to set up cw skimmer with the elecraft kx3 radio using its wideband iq output. The entire uninstall command line for smartsdr freedv waveform 1. Flex flex 1500 and 3000 use the same mic jack as yaesu rj45 radios yaesu rj45 modular.
It is lsb or usb, depending on the band you are using, with digitized. Most flexible software radio toolbox available outside of closed source. Freedv is unique as it uses 100% open source software, including the. Decoding and encoding done at this end of the link done. I have a few code plugs for the md380 one just for hotspots and one that has all the ohio repeaters. The input level from the radio to freedv input should be set so the waterfall is blue white indicates level is too high and the level bubble will flash a warning. Free dv digital voice software for ham radio email this blogthis. Flex 6400 signature series sdr transceiver w automatic antenna tuner. Interference on hf digital voice page 2 qrz forums.
These are projects using the raspberry pi rpi computer and amateur ham radio. Software for digital voice category is a curation of 4 web resources on, freedv plus video, codec 2, freedv. Spectrum regrowth from imd is easily seen in the flex waterfall also. To my surprise, i got a quick answer from walter, k5wh, in houston tx. Aug 15, 2008 this folders contains information about thirdparty software and drivers with powersdr such as vac, vcom, com0com and the griffin powermate just to name a few. My software defined radio satellite station using a flex 6600. Once installed, the ability to transmit and receive using freedvcodec2 is added to the flex6000 radio, and a new mode button named fdv appears alongside usb, lsb, fm, etc. The freedv waveform installer adds the freedv mode to flex 6000 signature series sdrs freedv is a free, open source, digital voice communications system for hf amateur radio, which uses the codec2 low bit rate vocoder voice coder decoder developed by david rowe, vk5dgr. It combines digitalvoice with low resolution 36 lines, low frame rate 1 fps video.
The implemented example uses the codec2 digital voice coder and freedv hf modem developed and released by david rowe. The freedv waveform howto guide describes the basic operation of the freedv fdv mode based on codec2 that can be added to any flex6000 signature series software defined radio. We are distributor of software defined radio s from flexradio systems software defined radio systems are taking over the place of conventional radio. I guess we need a spectrum mask for freedv like commerical drm and dv broadcasters use. Messages are generally free format and also have a 32bit message number so that they may be trapped by the client and displayed. Furthermore, there are waveforms from flexradio systems for. Messages are generally free format and also have a 32bit message number so that they may be trapped by the client and displayed differently if appropriate. A manufacturer of advanced software defined radio products for the amateur radio, government and commercial markets. Radi f6gnz has provided instructions how to use cw skimmer with other software. Wa9ony amateur ham radio raspberry pi computer projects. Freedv where amateur radio is driving the state of the art. Flexradio systems engineering operating digital modes with sound card based software using a flexradio radio sdr is a little different than using a traditional analog transceiver. I am curious why this software doesnt have an ident button and a website that posts your call and frequency when you identify ident.
You might want to set up and operate with digital voice first before adding video. Zl2afps software has been modified by wa6nut for compatibility with freedv. Freedv waveform how to guide description package info attached files the freedv waveform howto guide describes the basic operation of the freedv fdv mode based on codec2 that can be added to any flex6000 signature series software defined radio. Rtty and other digital modes use 3rd party software over dax channels. Freedv wave form and application voice over digital mode. Frequently asked questions regarding freedv plus video. Part 1, how to setup digital modes for flex radio systems, sdr software defined radios flex 5000 and sdr. The program is easy to download, setup, and it works great. Dependent upon your hardware interface and radio, ptt rig control may be configured for vox, hamlib or a serial port. A separate web page, rpi computer projects, demonstrates how to use the rpi computer for general purpose computing.
Messages from the radio can be emitted to the client to let the client know about various status changes, alarms, etc. Skywave linux is a 64 bit live system providing installed and configured software for accessing software defined radio servers locally and on the internet. If powersdr says you need to update the radios firmware, then download this firmware v1. Freedv is a hf digital voice program for windows, linux and apple utilizing an fdm modem and the open source low bit rate codec2. I tried without the pc software with simply fdv option. Runs on gnu radio, intuitive ui, easy to use, good performance, stable uses qt. Compare the best free open source windows ham radio software at sourceforge.
My flex 6500 supports freedv as a builtin waveform app with some help from the windows pc. All in lsb, not usb thats where the flex comes into trouble. The signal is received by an ssb radio, then demodulated and decoded by freedv. Two flex6700 software define radios running over a network for our. Logging software, digital mode programs downloadinstall fldigi, freedv, sigmira, digipan, cw skimmer, hrd, multipsk if you want to try digital modes of hf communication cw,rtty,psk, etc. The radio setup and software install was pretty straightforward. Flex and other sdrs may use a virtual com port pair. Freedv represents a path for 21st century amateur radio where hams are free to experiment and innovate, rather than a future locked into a single manufacturers closed technology. Here is a current list with links for the smartsdr software which i know of. Freedv for windows will execute and run on any current home pc or laptop with a dual core or higher intelamd cpu. For example, the above photo shows a rpi sstv setup in project 17.
Free, secure and fast windows ham radio software downloads from the largest open. With a software defined radio, it is the software powersdr that directly interacts with the sound card based digital mode program, so the primary concern is how do i get the audio from powersdr. Tx capabilities, iq sample correction, dual soundcard support. It uses freedv digital voice software by vk5dgr and video software by zl2afp. Setting up digital mode software on the flex6000 series radios doug reece ak4ao version 1. After researching technical information and forums for every radio out there, i am very happy to report that i purchased the flex 6500. Freedv, the new hf digital audio program for radio amateurs.
Aug 20, 2014 new software defined radio sdrs products are popping up every few months these days so we thought wed compile a big list of available sdrs as there are a few people who were bitten by the rtlsdr bug and are now looking to upgrade. Freedv was built by an international team of radio amateurs working together on coding, design, user interface and testing. The freedv waveform installer adds the freedv mode to flex6000. Setting up digital mode software on the flex 6000 series.
With a software defined radio, it is the software powersdr that directly interacts with the sound card based digital mode program, so the primary concern is how do i get the audio from powersdr to the digital mode program that is running on the same computer. Basically freedv uses an audio codec a piece of software that encodes and decodes audio like mp3s use as a software based modem to decode and encode the voice and text data from your computer. There is a growing competition in the market which is always a driving factor for any technology. It is a near zeroif quadrature software defined radio sdr. Free, secure and fast ham radio software downloads from the largest open source applications and software directory. The amateur radio experimenters group is proud to announce a new event on the amateur radio calendar. The data is encoded and then is transmitted over the hf radio using af signals that can then in turn be decoded by the receiving station.
For example, there is a waveform for freedv available. You can also write waveforms which take the raw radio data and demodulate it and present it as a mode. Firmware updates to the flex1500, 3000, and 5000 radios for band region. One example is this fantastic freedv getting started video produced by tony, k2mo.
A freedv signal only occupies one half the bandwidth of a normal ssb signal. Dec 10, 2012 freedv, the new hf digital audio program for radio amateurs. Posts about software defined radio written by fkemmerer and akemmerer1. Setting up digital mode software on the flex 6000 series radios. You can run freedv using a free gui application for windows, linux and osx that allows any ssb radio to be used for low bit rate digital voice. Radio capabilities can change with software releases, resulting in a new learning curve both radio and computer software can be subject to software glitches and bugs.
Freedv is unique as it uses 100% open source software, including the speech codec. May 03, 2017 in fact you can run conventional thick client sdr software such as hdsdr or even powersdr or rocky. Think of the waveform api as a way do design more signals, modes, and other rf into flexs smartsdr. Freedv hf digital voice for radio amateurs how linux is built. The aim is to encourage as many radio amateurs as possible to learn about freedv and encourage as many freedv signals to be on the air as possible to help spread the word about this new mode. Alternatively you can buy a sm freedv adaptor that allows you to run freedv 1600 and 700d modes on any hf radio without a pc or sound card. Compare the best free open source ham radio software at sourceforge. The rigblaster advantage has been designed with you, the digitalmode. Digital mode interface is built in to flex software.
Smartsdrdsp contains the source code for a wrapper, as well as an implemented example of a modem for any signal processing block that could be attached to a smartsdr radio. Gnu radio toolkit everything linux, osx,win unsupported, but said to work, see ettus research site free, gnugpl. This folders contains information about thirdparty software and drivers with powersdr such as vac, vcom, com0com and the griffin powermate just to name a few. Aug 18, 2015 im giving an sdr talk in a few weeks, and i thought i should try out some new to me stuff. For detailed instructions, see the detailed document. I also feel a sense of importance in our work freedv is the only open source digital voice system for amateur radio. Hardware alc for amplifier protection is not recommended with flexradio sdrs. It is lsb or usb, depending on the band you are using, with digitized audio fed to the microphone input. For each sdr we compare the cost, frequency range, adc resolution, maximum instantaneous bandwidth, whether or not it can tx and if it has any pre selectors. Transverter support, dual rx and wider bandscope bandwidth support are just a few big changes.
Freedv is a hf digital voice program for windows and linux utilizing an fdm modem and an open source low bit rate codec. Summary of flex6000 capabilities multiple receivers work multiple bands andor multiple modes simultaneously variable filters set to 4. Codec 2 is currently used in several radios and software defined radio systems. Stations currently setup for any digital mode, psk, rtty, sstv, etc. Free, secure and fast windows ham radio software downloads from the largest open source applications and software directory. May 30, 2018 the signal is received by an ssb radio, then demodulated and decoded by freedv. Amateur radio is transitioning from analog to digital, much as it transitioned from am. Virtual audio cables vac commonly used with sdr radios are compatible with the freedv software. Its an opportunity to prevent ham radio and digital voice over radio in general being locked down to proprietary codecs.
The other problem that i had at first, was figuring out where the three sets of wires went between the edirol sound card, the flex, and the computer. Matt vk5zm talking to using the sm on an ic 706 from is home qth under supervision of david vk5dgr. It may be installed in any flex6000 signature series radio by using the instructions below. For more details and to download the free software click here. Instructions for setting up cw skimmer with elecraft kx3. All this is very easy to see with a flex radio spectrum display. The freedv waveform installer adds the freedv mode to flex6000 signature series sdrs freedv is a free, open source, digital voice communications system for hf amateur radio, which uses the codec2 low bit rate vocoder voice coder decoder developed by david rowe, vk5dgr. Flex6400 signature series sdr transceiver w automatic antenna tuner. These project were completed by david haworth, wa9ony. Let me say that freedv technically is the right direction for digital voice to go, i. You could enter your own fcy so it doesnt even have to read the radio. What do i need to operate digital modes with flex radios. I plan to try freedv in the near future and i am planning a blog post to.
But there are nobody who try this mode at this moment. How may db should the shoulders be down with freedv. Free dv digital voice software for ham radio duration. Freedv is open source software, released under the gnu public license version 2. When a higherperformance pc is available, the video tx, freedv, and video rx software are installed on the same pc as shown in the diagram below.
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