How do I load new / upgrade / downgrade firmware versions?Īssuming you’ve downloaded the firmware package which includes the PC executable loader software and the firmware.
Wait until LED stops flashing, then turn off radio, and turn back on again. When the top panel LED turns to yellowish-green colour, you can let go of the buttons. Press and hold down the small black button below the PTT and the small top panel orange key, and turn on the radio. How do I do a reset on the GD-77S (no keypad version)?įirst turn the top selector to channel 16. Radioddity GD-77 Tuning & alignment project There is a way to correct it if you do face this problem, see my alignment page at: In some versions of firmware, between 2.6.7 and 3.1.1, there is a bug that the reset sometimes doesn’t quite refresh the memory properly indeed it could even induce new problems. Don’t turn off the radio while it’s resetting. You’ll be greeted with ’Memory Reset?’ and to complete the process you have to confirm by pressing the green button.
DMR PROGRAMMING GD 77 MANUAL
of the user manual says to hold down side key 1 (the black button underneath the PTT) and keypad button 1 while turning on. Often the solution is to start fresh and write a new codeplug from the ground up. While in theory it shouldn’t be a problem, frequently it does lead to strange things happening. Many strange issues seem to stem from having a large codeplug, created bit by bit, added to ad-hoc etc. Help!Ĭautiously try a reset (below) and then try a very simple codeplug.
DMR PROGRAMMING GD 77 FULL
My GD-77 is doing funny things eg: no transmit on any frequency / signal meter randomly goes full scale even though there is no signal genuinely present / other general strange issues. Then slowly build up your configuration from there. Second, and as a last resort, perform a factory reset (below) and program a very simple codeplug to prove that it will receive a DMR channel. First, see if there’s anyone else nearby who has a GD-77 working correctly and borrow their codeplug. Yes, there’s two things you can try at this stage. Nope, still not hearing any DMR transmissions. If this works however, it’s a sure sign that, somewhere, your DMR configuration isn’t quite right. A solid black speaker symbol will appear to indicate that the monitor function is on. You need to program one of the buttons for the monitor function, and then when on a DMR channel press that button. Some people have reported success with the ’monitor’ function. OK, I’ve checked all that, and I’m still not hearing any DMR transmissions. The software doesn't prompt you to do this, but you will have to rebuild your RX Group lists (which is why you don't hear anything after importing digital contacts) and re-enter your digital contact for each DMR channel. If you have, at any time, imported new digital contacts you must then go through and rebuild anything that makes use of the digital contacts. On a DMR channel, it could mean another talkgroup or other timeslot is active, or even idle DMR data being transmitted will cause the green LED to light up. On an analogue channel, there could be a signal with a CTCSS / PL tone that doesn’t match.
The green LED doesn’t necessarily mean sound should be coming out of the speaker, it merely indicates that some sort of RF signal is on the frequency.
The green LED is lighting up, shouldn’t I be hearing something? If you leave it set to ’none’ then nothing will be received. Unlike other DMR radios you may have been used to, the GD-77 absolutely requires a RX group list to be attached to each and every DMR channel. Check that you definitely have the correct DMR colour code, correct timeslot and correct talkgroup programmed in to the channel. My GD-77 won’t hear anything (DMR digital channel) even though the green LED is lit up? This is probably the reason why your GD-77 has remained silent - you’ve set an incorrect CTCSS / PL tone. It may or may not have matching CTCSS / PL tones. My GD-77 won’t hear anything (analogue FM channel) even though the green LED is lit up? New user to the GD-77? Got a question you can’t find the answer to? Have a look here Radioddity GD-77 FAQ Frequently Asked Questions
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