Category Archives: Digital Modes (VHF/UHF)

M17 Analog Hotspot Gateway, a surprising Amazon find ?!

Posted on January 16, 2025 by Daniel

Sometimes you stumble on weird things on Amazon, in my case an M17 Analog gateway for about €40 from Amazon Germany shop. Curious on this device, and simply also somewhat surprised to find a M17 gateway on Amazon I ordered … Continue reading →

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MD-380 Volume Control Modification for OpenRTX/M17

Posted on January 11, 2025 by Daniel

Today I performed the MD-380 Volume Control Modification for OpenRTX/M17 on one of my MD-380 radios. This was to try to get the audio level improved for M17, after updating the radio with OpenRTX. https://github.com/OpenRTX/OpenRTX/issues/266 I did the mod as … Continue reading →

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My new M17 Module17

Posted on January 4, 2025 by Daniel

Happy me! Today both my Module17 arrived from China and the OLED Display module from Amazon. Coincidentally both on the same day. So in parallel to 3D printing the case, I build , flashed and tested the Module17 and a … Continue reading →

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M17 Experimenting

Posted on December 25, 2024 by Daniel

I finally had time to get M17 working and do some first experiments. Please have a look at my dedicated page on how this is working out!

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OpenGD77 on the TYT MD-9600 / Retevis RT-90

Posted on May 22, 2022 by Daniel

I always like the MD-9600 as a radio but disliked the firmware. Therefor I got really excited that I read that OpenGD77 got ported to this radio. I started with a v2 hardware radio and installed the Alpha version that … Continue reading →

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Radioddity GD-77: This is a wonderfull DMR radio for a fantastic price!

Posted on October 8, 2017 by Daniel

I ordered this radio as soon as it became available without any expectations. The price was so low that I did not expect much. Also as I already had a RT-82 I did not really need it, I was just … Continue reading →

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MMDVM DMR calibration

Posted on May 29, 2017 by Daniel

F5UII wrote an excellent article on how to calibrate a MMDVM repeater. Both with a spectrum analyzer or with a simple (RTL) SDR USB stick as an alternative to a spectrum analyzer.  Great stuff, please have a look; Install MMDVMHost … Continue reading →

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This is a great and very helpfull website: TYT MD380 Tools

Posted on April 23, 2017 by Daniel

Please have a look at the following Website. As I have been flashing the Retevis RT3 and MD380 for a long time manually now, I still thought this website to be very helpfull. TYT MD380 Tools It has a very nice … Continue reading →

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