GP300 Error 21

[robertor]

Hi there.
I purchased 2x GP300's from eBay.
They do not seem to have any programmed data for > ch1. They will continuously beep on any channel apart from channel 1. Only on channel 1 will they talk to each other.

I have the R7 and R8 RSS and when I try and read the codeplug data I get Error 21 - Radio Not Supported. I thought that it may have been programmed in a higher version of RSS but I think I have tried the latest. Any ideas how I can read the codeplug data, if it has any onboard? It may be corrupt so how can I get a codeplug for this radio?
I am using a Ribless programming cable from eBay.
Model number for the radios are: P93YPC09C2AA

Thank You!

[hb001]

You may have a international version or a board that the board/guts are different then the actual case. Try reading it with the gp88 software. That particular software will read just about any radio gp300, gp350, p110, and of course gp88.

[lujorsan]

hi. i think that these radios can not be programed with that software. i think they are old radios with 2, 8 or 16 chanels. please confirm if the prog cable is connected in the back near the batery. if its like i say i can send you sof and cable diagram. regards, jorge

[eb1cxc]

Hello,

P93YPC09C2AA is a VHF radio, 5 tone signalling ,16 chanels, 146-174 (144-176) mhz

you're using the general software, the software for general GP300, QuickCall signalling.

Your radio is not compatible with this software (Error # 21)

You need using the specific software for radios of 5 tone signalling.

Best regards,

Santi.