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Version 0.9.1-1 has been released Changelog: - Rebased releases on GNU Radio 3.10 - Added DMR transceiver (repeater mode and DMO) - Switch to using the polyphase channelizer and

It's probably possible, yes, but you'd need to change the MMDVMHost and MMDVM code if your hotspots are using MMDVM_HS, because it doesn't support version 2 of the protocol. Repeaters running

Hello all, Wondering if this is a possibility to do. I want to look at playing with some tier 3 features and I have a few duplex mmdvm hotspots based off of pi zero W’s laying around. Can these be

It is technically possible, but your main problem will be regulatory compliance (and perhaps type acceptance for the equipment). I've done plenty of tests with narrow-band transmissions and these

I've been researching for a while now about the possibility of building an amateur repeater using an SDR. I was wondering if anyone has done this with an SDR?

Excuse my lack of knowledge on the subject, but I need to ask someone who knows more.

Question: in the case of building a repeater station using an SDR, is it necessary to use a duplex filter for the amateur or commercial band?

Hi Adrian M, When starting communication, there is a problem where the buttons must be pressed in the order of TX, PTT, and RX in order to send voice, video, and text normally. Is this situation

Hi keshawn, please keep the emails on the list, so everyone can benefit from the information. I'm glad you persisted and improved your knowledge. Now the answers: 1. You can either transmit text

Ok, that didn't make sense. -50 dB relative to what? Full scale? milliwatt? What I saw in your photos was just some extreme distortion in the PA or LNA stages or both, caused by too high gain values.

RF output about -50db If viewed from a spectrum analyzer，about -40db if viewed from the qradiolink receiver and set RX gain 100%. These are GUI images in attachments.

Can you explain what problem do you have and give more details regarding what does not work so I can deduce what's wrong? Is your problem related to audio, RF output, receiving? Give as much detail

Dear Adrian M I feel very frustrated. I have tried audio/sound transmission many times after reading docs carefully，use half duplex mode or full duplex mode without voip or SVXlink，but none of

The DMR trunking controller has been updated to version 0.1.6 Release information: * More robust handling of SMSs on the control channel * UDT message payloads are grouped together to avoid

Go to tab *Setup*, tab *Radio settings*, and change the Input and Output audio devices. It's documented here with screenshots: https://qradiolink.org/docs/setup/setup.html#audio-backend Your

ok! but ,How to switch Alsa to Pulseaudio? or ,how to close Alsa? Sorry to disturb you. forgive my ignorance.

Please read the documentation for the program setup. In there it is clearly stated *not* to use Alsa sinks and sources when Pulseaudio is installed, and instead to use the Pulseaudio sinks and

Dear Adrian M now, I have a new computer to run qradiolink, It reports "RtApiAlsa::getDeviceInfo: snd_pcm_open error for device (hw:0,0), Device or resource busy." , Although I reinstall the computer

Hello, Apart from the IP packet modes (QPSK 250K and 4FSK 100K) and MMDVM modes, which can only work in full duplex, all the other modes can work both in semi- duplex (simplex) or full

Dear Adrian M There are over thirty modes in total，would you tell me which modes can achieve duplex communication, and which modes can only perform simple communication, and how to operate