Alan, the instructions say one of openssl, polarssl/mbedtls or gnutls >= 3.0 The cmake flag -DSSL selects what is used.
Adrian On October 22, 2019 9:49:13 AM UTC, Al Beard <bear...@unixservice.com.au> wrote: >Hi Adrian, > >Your "umurmur" requires package PolarSSL. This is superseded by Mbed >TLS. > >But all the function names are different. > >Not easy. > >Alan VK2ZIW > >On Sun, 20 Oct 2019 16:57:58 +0300, Adrian Musceac wrote >> Alan, >> >> Use this version of umurmur: https://github.com/qradiolink/umurmur >> It is slightly older but verified to work with qradiolink. The Murmur >server is more complicated and has some compatibility issues that I >didn't solve yet. >> If you use the headless remote interface, you will need to set >everything up for repeater mode either in the settings file before >starting the program, or via telnet commands (squelch, volume, tx and >rx gain, tx shift, VOIP gain, duplex mode, frequency, CTCSS, etc). >Then, you only need to issue "start_trx" and "setrepeater 1". If you >have two computers and want to link two repeaters, you will need two >full duplex SDRs like the PlutoSDR or LimeSDR-mini to work in repeater >mode. The HackRF is not full duplex. If you don't want them as >repeaters but simply radios linked by VOIP, then you can use HackRFs >just fine but make sure not to enable duplex mode in qradiolink. >> For repeater mode, you can have an RTL-SDR for receiving and a HackRF >for transmitting and a single qradiolink instance on a single computer >configured to use both. I don't have a HackRF so I was not able to test >it. I'm curious whether it works well, please let me know. >> If you use non-linear amplifiers with the HackRF, there are two 2FSK >modes which support both Codec2 (2FSK-2K) and Opus (2FSK-10K), as well >as 800XA. 2400A is not yet added. >> >> Cheers, >> Adrian >> >> On Sun, Oct 20, 2019 at 4:22 PM Al Beard <bear...@unixservice.com.au> >wrote: >> >> >> Hi Adrian, >> >> >> Yes, I was thinking of split sites, a computer at each end >> >> >> I'll investigate mumble and murmur as they are standard packages on >the Fedora 29 here. >> >> >> Alan VK2ZIW >> >> On Sun, 20 Oct 2019 11:22:20 +0000, Adrian Musceac wrote >> > Alan, >> > >> > If you only want a cross-band repeater you don't need umurmur. That >is for connecting repeaters or radios over the internet. Just enable TX >and RX in qradiolink, set the TX shift in kHz and then enable the >repeater. You can use two separate devices in qradiolink. >> > >> > Adrian >> > >> > On October 20, 2019 8:23:31 AM UTC, Al Beard ><bear...@unixservice.com.au> wrote:Hi Adrian and David, >> > >> > >> > Noting the Mumble protocol and looking for a server, I found >uMurmur on github >> > and tried to compile it on my Fedora 29 x86_64 here but am lost in >cmake finding >> > the SDL library. >> > >> > >> > To make a cross band codec2 to FM repeater, can you give a quick >run down >> > using your software? >> > >> > >> > Alan VK2ZIW >> > >> > >> > >> > >> > On Thu, 17 Oct 2019 22:44:01 +0300, Adrian Musceac wrote >> > > Hi David, >> > > >> > > Wow Adrian it's really coming along quickly! Well done :-) >Combined >> > > with the latest crop of duplex SDRs, I can see this work opening >up >> > > experimentation in the VHF/UHF bands. >> > > >> > > >> > > Thanks! I've been working full time on this in the last month due >to a break at work that might end pretty soon. >> > > I'm aiming at VHF to SHF work, small, portable and field >configurable repeaters (check out the LimeNet-micro and LimeRFE) >> > > and satellite ops. The IP radio modem in qradiolink might also >help point to point IP link connectivity at low bandwidths but it needs >more improvement. >> > > >> > > HF is not out of the question but due to QTH conditions can't >really use it. >> > > Telemetry modems (even direct sequence spread spectrum for very >low bitrates, like LoRa) and multi-channel repeaters are the next stop >> > > (after release 1.0). >> > > >> > > Some thoughts: >> > > >> > > 1/ Codec 2 2400A and 2400B were designed to work on VHF/UHF, and >2400A >> > > to substantially outperform FM and current digital voice systems >at low >> > > SNRs: >> > > >> > > http://www.rowetel.com/wordpress/?p=5219 >> > > >> > > They're in the FreeDV API already >> > > >> > > >> > > I'll add 2400A for sure. I don't really see a reason to use 2400B >with SDRs. Maybe for testing purposes only with the FM modulator. >> > > >> > > But right now my plate is pretty full trying to test everything >already in and do some packaging. >> > > The 700D modem segfaults in the LDPC encoder with the version of >libcodec2 in Debian stable and I didn't even have time to raise a bug >with them. >> > > But I'll add it as well once that's figured out. By the way, can >I suggest for libcodec2 Git tags for stable releases? I could not find >any tags in Github and they would be pretty useful as landmarks. >> > > >> > > 2/ Have you done any BER versus SNR (Eb/No) tests to evaluate >the >> > > performance of the modems you are using, e.g. comparing >performance to >> > > theoretical? We have found many existing VHF/UHF digital voice >systems >> > > have modems that perform poorly. Gains of 10dB are possible with >the >> > > right modem/waveform design. >> > > >> > > >> > > Yes. All tests are good. My custom modems are nothing original, >they are based on the knowledge of the GNU radio community, especially >Daniel Estevez and Marcus Mueller but also others. >> > > >> > > Some problems occur with some modems like the DQPSK written by me >used with both Opus and Codec2 >> > > due to some implementation misconfigures. The Doppler correction >used for them tends to interact badly with the rest. >> > > I'll fix that eventually. >> > > >> > > But the FreeDV modems work very well. All numbers check out >exactly as you described in your website. >> > > >> > > 3/ RpiTx would be an interesting option for the TX side: >> > > >> > > https://github.com/F5OEO/rpitx >> > > >> > > >> > > RPiTx is a work of art, but it has some annoyances. It requires a >PGA in front to set the output power (some amplifiers >> > > drive from below 0 dBm). The signals are not exactly clean, but >the main downside is the limited frequency range. >> > > I do SHF (2.4 GHz and 5 GHz) with the PlutoSDR. Options to go all >the way up to 10 GHz with some other MyriadRF hardware. >> > > >> > > There's the https://osmocom.org/projects/osmo-fl2k/wiki project >which gives you a very cheap SDR transmitter as well but with the same >limitations. >> > > >> > > Best regards, >> > > Adrian >> > > >> > > Cheers, >> > > David >> > > >> > > On 17/10/19 10:30 pm, Adrian Musceac wrote: >> > > > Hi, >> > > > I made some more progress working on my application[1]. >> > > > First of all, it is now possible to run it headless (maybe even >> > > > daemonized) and control it remotely using a telnet client. >> > > > Second, I have added support for mixed mode repeater (Codec2/FM >or >> > > > viceversa or any combination of modes like wideband >> > > > Opus/Codec2/FreeDV/SSB etc.). >> > > > >> > > > The repeater can be connected to a VOIP server using the low >latency >> > > > Mumble voice protocol (known especially for high-performance >gaming). So >> > > > it is possible now to connect multiple repeaters together by >putting >> > > > them on the same VOIP channel (this can be controlled via >telnet as >> > > > well, although it's stil work in progress). They operate in >full duplex >> > > > mode, so a VOIP user can talk at the same time as a radio user >and the >> > > > two audio streams will be mixed together and broadcast. The >> > > > FreeDV/Codec2 radio frames are transcoded to Opus at very high >bitrates >> > > > (~48 kbit/s) for VOIP transport. This may cause some small >delays. >> > > > >> > > > I haven't really had time to test the cross-mode repeater so >could use >> > > > some help there from interested parties. >> > > > >> > > > [1] http://qradiolink.org >> > > > >> > > > Cheers, >> > > > Adrian >> > > > >> > > > >> > > > >> > > > >> > > > _______________________________________________ >> > > > Freetel-codec2 mailing list >> > > > Freetel-codec2@lists.sourceforge.net >> > > > https://lists.sourceforge.net/lists/listinfo/freetel-codec2 >> > > > >> > > >> > > _______________________________________________ >> > > Freetel-codec2 mailing list >> > > Freetel-codec2@lists.sourceforge.net >> > > https://lists.sourceforge.net/lists/listinfo/freetel-codec2 >> > > >> > >> > --------------------------------------------------- >> > Alan Beard >> > >> > OpenWebMail 2.53 >> > >> > >> >> --------------------------------------------------- >> Alan Beard >> >> OpenWebMail 2.53 >> >> _______________________________________________ >> Freetel-codec2 mailing list >> Freetel-codec2@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/freetel-codec2 >> > >--------------------------------------------------- >Alan Beard > >OpenWebMail 2.53 > >
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