MM0RFN is using a GM340 as the 9600bd/UHF port on GB7HIB.

General programming advice from https://www.bi7jta.org/wiki/index.php?title=Main_Page#GM340.2FGM350.2FGM360 was followed, including connector definition.

Hibby's codeplug for the GM340 is here as a downloadable zip

To change output power, open GM340 > Per Radio > RF with a double click and vary high/low power modes

To change frequency, open GM340 > per Channel > double click a channel and assign new frequency, spacing and power level (defined in Power section)