This is the pre-programmed PIC to control the custom designed 8 band decode board for the Portsdown transmitter.
The 8-band decoder is designed to work with the 8-band RF output switch and the “Portsdown 2018” software. It is NOT required for the port 4 switch and band decoder.
It will provide switching signals (either always on, or PTT activated) to 4 Power Amplifiers and 4 transverters, and it also enables you to set which VCO filter should be switched in for the 4 transverter outputs.
Note this is for the programmed PIC ONLY
For full details see https://wiki.batc.org.uk/8-Band_Decoder