[werk_ag]

Hi Ian,

Thanks for the update.

...
Commenting out the debug defines caused the original problem of no startup to reappear. 
If the #define ENABLE_DEBUG is left enabled (with //#define DEBUG_ID4) then the tx works correctly.

System now working as it should. Though may have to wait till summer to get some decent sunshine.
Ian

Out of curiosity, you have compiled the code using Atmega328P (old bootloader), or just Atmega328P?

Rgs.