cattledog:
Your test eeproms are 128Kbits (16Kbytes). What is the size of the eeprom in the radio? Is the eeprom in the radio addressable with i2c? How did you obtain the "dump file?
The dump files can be easily obtained by searching Google for "AGC-1220RF dump file".
The radio appears to be equipped with an FM24V01 chip, which is i2c, 128kib. However, this chip seems to be getting hard to find. I have seen several dump files for this radio listed as 24C128 dump files.
cattledog:
In your link to the "dump file" you show 720 bytes of data. Is that the data you have? Where does the 16K bytes come in? Is all data after the 720 either 0x00 or 0xFF or is there real data to deal with?
Each of the binary files is 16kiB, including the file I intend to use.
Maybe I'm too proud, but I deliberately didn't include the actual binary file since I really want to learn to do this myself.
Thank you for showing interest in this project. I should mention that, while I am a newby, this isn't my first Arduino project. Since I acquired my Arduino, I've been spending my December holiday chasing down projects after working through the examples in the booklet. I am surprised that the i2c EEPROM stuff is so difficult for me.