Motorola GP-600 programming

[f46838]

Hello,
sorry for my bad English. I am German.

I have a Motorola GP-600 Radio. I can programm it with the RSS Software. It work fine.

But, i like to programm an "out of Range" Frequency. The Radio works normally up to 433 Mhz. I like to programm a little bit higher frequency.

In the Internet I found the "trick" with the pressing of the "Shift" Key in the RSS SW. But with my RSS Version it doesn´t work.
Can anybody help me?

Thx,
M