#limesdr — Public Fediverse posts

3.
- The MMDVM-Multi program written as per above, using #libliquid and #SoapySDR. It can be used with the #PlutoSDR, #LimeSDR family, Ettus #USRP bus devices, and hopefully soon also the #SXceiver which has become very popular recently with hams due to the MidnightBlueLabs TETRA stack

- The release of MMDVM-IQ by G4KLX means that a new, completely distributed #DMR #trunking stack is possible, using only UDP messaging protocols instead of various hacks on top of UDP, ZeroMQ and virtual PTY

3.
- The MMDVM-Multi program written as per above, using #libliquid and #SoapySDR. It can be used with the #PlutoSDR, #LimeSDR family, Ettus #USRP bus devices, and hopefully soon also the #SXceiver which has become very popular recently with hams due to the MidnightBlueLabs TETRA stack

- The release of MMDVM-IQ by G4KLX means that a new, completely distributed #DMR #trunking stack is possible, using only UDP messaging protocols instead of various hacks on top of UDP, ZeroMQ and virtual PTY

3.
- The MMDVM-Multi program written as per above, using #libliquid and #SoapySDR. It can be used with the #PlutoSDR, #LimeSDR family, Ettus #USRP bus devices, and hopefully soon also the #SXceiver which has become very popular recently with hams due to the MidnightBlueLabs TETRA stack

- The release of MMDVM-IQ by G4KLX means that a new, completely distributed #DMR #trunking stack is possible, using only UDP messaging protocols instead of various hacks on top of UDP, ZeroMQ and virtual PTY

3.
- The MMDVM-Multi program written as per above, using #libliquid and #SoapySDR. It can be used with the #PlutoSDR, #LimeSDR family, Ettus #USRP bus devices, and hopefully soon also the #SXceiver which has become very popular recently with hams due to the MidnightBlueLabs TETRA stack

- The release of MMDVM-IQ by G4KLX means that a new, completely distributed #DMR #trunking stack is possible, using only UDP messaging protocols instead of various hacks on top of UDP, ZeroMQ and virtual PTY

3.
- The MMDVM-Multi program written as per above, using #libliquid and #SoapySDR. It can be used with the #PlutoSDR, #LimeSDR family, Ettus #USRP bus devices, and hopefully soon also the #SXceiver which has become very popular recently with hams due to the MidnightBlueLabs TETRA stack

- The release of MMDVM-IQ by G4KLX means that a new, completely distributed #DMR #trunking stack is possible, using only UDP messaging protocols instead of various hacks on top of UDP, ZeroMQ and virtual PTY

Wrote the first article of this quarter, this time on using the #LimeSDR to transmit #HF signals.

It explains the important considerations such as aliasing, under runs and resampling.

https://dantalion.nl/2026/06/01/limesdr-hf-transmit-tx-a-guide.html

#ham #gnu #rf #hf

Wrote the first article of this quarter, this time on using the #LimeSDR to transmit #HF signals.

It explains the important considerations such as aliasing, under runs and resampling.

https://dantalion.nl/2026/06/01/limesdr-hf-transmit-tx-a-guide.html

#ham #gnu #rf #hf

The #limesdr has a minimal LO frequency of 30 MHz so you might be wondering how it receives HF at all.

Well it has 60msps max sampling rate per transceiver so it can demodulate the entire HF band with the LO at 30 MHz directly!

It also has an NCO for offset tuning, this NCO can be used to down convert by 3.072 MHz in total.

Provided is a GNURadio plot for the transmitting at frequencies below 30MHz.

Be careful that your sampling rate is at least the nyquist of your frequency shift!

#hf

I modified one of the antenna inputs on my #limesdr to improve #HF performance.

Here is the results measured from 30 to 1 MHz. The documentation of MyriadRF calls this the 'Easy Fix 1' it only requires to remove a single 0402 coil.

In the graph we see the mean improvement for the higher and lowest frequencies as well as the raw measurements.

You can find the procedure here:

https://www.crowdsupply.com/lime-micro/limesdr/updates/optimising-performance-on-hf
https://wiki.myriadrf.org/LimeSDR_HF_Performance

It seems my #gnuradio #correlator actually works, though I am still somewhat skeptical.

This is from a #limesdr correlating its two mu-mimo inputs.

The second picture is what happens when you disconnect one of the antenna from the input showings its not just correlating its own noise.

Release 0.10.2-1 of qradiolink is available now.

Changelog:

* Fix sample loss when tuning or changing gain with liblimesuite>=22.09
* Fix DMR timing loss in above conditions (BS and MS modes)
* Flowgraph no longer locked during gain changes with devices other than LimeSDR
* Wider correlation window in DMR DMO receiver

#DMR #LimeSDR

Success!!! #LORA message received by the #LimeSdr Mini and decoded using gnuradio blocks and python scripts by Josh Conway https://gitlab.com/crankylinuxuser/meshtastic_sdr

My LilyGo beam is a 433Mhz version though. We use 915MHz in Chile for #Meshtastic so now I'll go and have a peek up there.

Success!!! #LORA message received by the #LimeSdr Mini and decoded using gnuradio blocks and python scripts by Josh Conway https://gitlab.com/crankylinuxuser/meshtastic_sdr

My LilyGo beam is a 433Mhz version though. We use 915MHz in Chile for #Meshtastic so now I'll go and have a peek up there.

Сам себе мобильный интернет. Запускаем базовую станцию стандарта 4G LTE

Приветствую всех! Я уже не раз рассказывал про то, как в домашних условиях поднять сотовые сети разных стандартов. Но всё же все они были уже весьма древними. Самое время замахнуться на кое-что поинтереснее — LTE. Итак, в сегодняшней статье поговорим о том, что детально в нашем сообществе не описывал практически никто — о том, как запустить базовую станцию самого нового из поддерживаемых большинством телефонов этой страны стандартов. Поговорим об особенностях её работы и о трудностях, с которыми, возможно, придётся столкнуться при запуске. Традиционно будет много интересного.

https://habr.com/ru/companies/timeweb/articles/776040/

#timeweb_статьи #lte #usrp #sdr #limesdr #dragon_os #gsm #sim #4g #milenage #comp128v1 #ran #epc #enodeb #srsran #osmocom #earfcn #yota

Сам себе мобильный интернет. Запускаем базовую станцию стандарта 4G LTE

Приветствую всех! Я уже не раз рассказывал про то, как в домашних условиях поднять сотовые сети разных стандартов. Но всё же все они были уже весьма древними. Самое время замахнуться на кое-что поинтереснее — LTE. Итак, в сегодняшней статье поговорим о том, что детально в нашем сообществе не описывал практически никто — о том, как запустить базовую станцию самого нового из поддерживаемых большинством телефонов этой страны стандартов. Поговорим об особенностях её работы и о трудностях, с которыми, возможно, придётся столкнуться при запуске. Традиционно будет много интересного.

https://habr.com/ru/companies/timeweb/articles/776040/

#timeweb_статьи #lte #usrp #sdr #limesdr #dragon_os #gsm #sim #4g #milenage #comp128v1 #ran #epc #enodeb #srsran #osmocom #earfcn #yota

I think I put the wrong values in the power setting: it should be 0.001 for the first spot (limesdr mini with no amplification at 28Mhz).

It's a pity I couldn't get direct control of the #Limesdr from the WSPR software (the PTT would not activate). But, it finally worked!

#Wspr #hamradio

I think I put the wrong values in the power setting: it should be 0.001 for the first spot (limesdr mini with no amplification at 28Mhz).

It's a pity I couldn't get direct control of the #Limesdr from the WSPR software (the PTT would not activate). But, it finally worked!

#Wspr #hamradio

Small #HAMRadio project: use my #LimeSDR Mini to send a micro-to-milli watt #WSPR beacon on the 10-meter band (maybe adding a PA?)

The idea is a direct link from WSJT-X to the Limesdr so I don't have to deal with time sync issues and manual/external PTT for TX.

Small #HAMRadio project: use my #LimeSDR Mini to send a micro-to-milli watt #WSPR beacon on the 10-meter band (maybe adding a PA?)

The idea is a direct link from WSJT-X to the Limesdr so I don't have to deal with time sync issues and manual/external PTT for TX.

Any #radio enthusiasts want to suggest a good #SDR for someone looking to move up from cheap RTL-SDR dongles to something that transmits?

I'd like to learn more about modern digital RF, particularly cellular and spread-spectrum waveforms… so initially I started looking at the #LimeSDR and #BladeRF type units. (The #HackRFOne is neat, but can't do full duplex…)

What about the ADALM-PLUTO (and clones), though? It's cheaper and seems to be a favorite of the #AMSAT folks.

Any #radio enthusiasts want to suggest a good #SDR for someone looking to move up from cheap RTL-SDR dongles to something that transmits?

I'd like to learn more about modern digital RF, particularly cellular and spread-spectrum waveforms… so initially I started looking at the #LimeSDR and #BladeRF type units. (The #HackRFOne is neat, but can't do full duplex…)

What about the ADALM-PLUTO (and clones), though? It's cheaper and seems to be a favorite of the #AMSAT folks.

How to Run a First-Generation Cell Phone Network - Retro tech is cool. Retro tech that works is even cooler. When we can see technolo... - https://hackaday.com/2021/06/02/how-to-run-a-first-generation-cell-phone-network/ #cellularnetwork #cellularphone #phonehacks #radiohacks #retrotech #limesdr #osmocom #usrp #sdr

How to Run a First-Generation Cell Phone Network - Retro tech is cool. Retro tech that works is even cooler. When we can see technolo... - https://hackaday.com/2021/06/02/how-to-run-a-first-generation-cell-phone-network/ #cellularnetwork #cellularphone #phonehacks #radiohacks #retrotech #limesdr #osmocom #usrp #sdr

SDR Transmitting Gets the Power - Most hobby-grade software defined radio setups don’t transmit. Of the few that do, most of them pu... - https://hackaday.com/2020/08/29/sdr-transmitting-gets-the-power/ #software-definedradio #poweramplifier #transmitter #radiohacks #amplifier #plutosdr #limesdr #hackrf #radio #sdr

Its almost ready to run #LimeSDR on #NintendoSwitch.

It may require some final touch but I think I can run #GNURadio with some OpenCL blocks. (with pocl)
https://gbatemp.net/threads/l4t-ubuntu-a-fully-featured-linux-on-your-switch.537301/

Had a hell of a time getting a LimeSDR Mini working with Gqrx on my Arch box. Wrote up how I finally got it working so I don't have to go through that again, and maybe help someone else having trouble with it.

https://electro.pizza/2019/02/limesdrmini-gqrx-arch/

#sdr #limesdr #arch