CHIRP channels into an OpenGD77 radio
Drop the CHIRP file, a RepeaterBook export or a spreadsheet, and save a .zip with Channels.csv, Zones.csv and the other files OpenGD77 CPS expects in the folder. Append them to your codeplug: the channels and zones are added, and nothing else is touched.
What goes in
Analog FM channels with their frequencies, CTCSS or DCS, 12.5 or 25 kHz and power (P1 50 mW up to P9 5 W, as on the GD-77). Receive-only channels are marked Rx Only, skipped ones Zone Skip and All Skip. Names are cut to 16 characters and made unique; commas become full stops, because the CPS uses commas to separate columns. 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.
Frequencies the CPS takes
OpenGD77 CPS accepts 80–282 and 380–564 MHz and moves anything else to the edge of that range (52.525 MHz would become 80.000). Such channels are left out and listed, so nothing lands on a frequency you did not ask for.
Append, not Import
Unzip the files into a folder of their own. In OpenGD77 CPS open your codeplug and save a copy, then File › CSV › Append from CSV and pick the folder. “Import from CSV” would replace your contacts, talk group lists and DTMF list as well.
What is tested — and what is not
Tested: imported and appended in OpenGD77 CPS E2026.05.26, which gave back the same channels and zones and kept the contacts. Not tested: older CPS versions and the factory software of the same radios. OpenGD77 is replacement firmware for the Radioddity GD-77 and GD-77S, Baofeng DM-1801 and RD-5R, TYT MD-UV380/390 and MD-9600, Retevis RT3S and Baofeng DM-1701 — these files are for a radio that runs it, not for the factory firmware (see the OpenGD77 project for the current list). 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
- Why are there empty Contacts.csv and TG_Lists.csv in the zip?
- The CPS reads a whole folder of five lists. The empty ones add nothing when you append, so your own contacts stay as they are.
- How many channels fit in a zone?
- 80 in OpenGD77; a bigger band is split into several zones.