CHIRP channels into a Radioddity GD-77
Drop the CHIRP file, a RepeaterBook export or a spreadsheet, and save Channels.csv for the GD-77 factory programming software. It was imported into CPS V3.1.9 and exported back unchanged.
What goes in
Analog FM channels with frequencies, CTCSS or DCS and power as High or Low — the twelve columns this CPS exports itself. Names are cut to 16 characters. Names are written in plain English letters, since the CPS cannot show others: Kraków becomes Krakow, and a name in another alphabet becomes the frequency. The software holds up to 1,024 channels.
What the file cannot hold
The GD-77 channel file has no bandwidth and no receive-only setting. Every imported channel comes in as 12.5 kHz — set 25 kHz in the CPS where a repeater needs it. Receive-only channels are left out and listed, because imported they would become channels the radio can transmit on.
Only frequencies the radio covers
Channels outside 136–174 and 400–480 MHz are left out: the CPS would quietly change their frequency to 400 MHz. A tone written the wrong way — 023N instead of D023N — made the CPS stop importing at that row without a word, so tones are written only as 88.5 or D023N, the way the CPS writes them itself.
In the CPS
Open your codeplug (or read it from the radio) and save a copy — importing replaces all the channels. Then Channel › Import with Channels.csv, and write to the radio. Zones and scan lists are not imported by this CPS; add the channels to them afterwards.
What is tested — and what is not
Tested: imported into Radioddity GD-77 CPS V3.1.9, which gave back the same file byte for byte. Not tested: other CPS versions. If your GD-77 runs OpenGD77 firmware, use the OpenGD77 page — that format keeps bandwidth, receive-only and zones. The files go to the programming software, not to the radio: what the CPS then writes to the radio is up to the CPS, and we cannot check that without the radio. The files can be made on any computer, a Mac or Linux too; the programming software itself runs only on Windows. Use at your own risk, and transmit only on frequencies you are licensed or allowed to use.
Questions
- And the contacts?
- See RadioID contacts for the GD-77.