Batboard

Does anyone know if it is possible to wind the power down on a GM950plus to 1watt for use as a constant Tx audio transmitter. Software allows 5 or 25watts but no lower. There used to be a trick with the older motorola mobile radios to do this. I think it was adjusted on the PCB and forced to constant Tx. The gm950plus doesn't seem to have any adjusments on the PCB.

Any ideas would be much appreciated.