DMR-GD77 and USB-74 for the Radioddity GD-77 radio.
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Radioddity Two Way Radio | Has anybody been successful in getting the larger (up to 10K IDs/Callsign) DMR-ID database application to write IDs and callsigns to their GD77
Read/write GD-77 codeplug in Linux in Python 3 (experimental) - Page 2 - OpenGD77
Amazon.com: Customer reviews: Radioddity GD-77 DMR Digital/Analog Two Way Radio Dual Band Dual Time Slot, Work with Hotspot, Amateur Ham Radio w/Free Programming Cable Black
OpenGD77 | I have a Radioditty gd77 with Open GD77 software and firmware | Facebook
Radioddity Download
Upgrading the GD-77 to the OpenGD77 Firmware
Radioddity GD-77 , Programing Using Original Software - YouTube