Ok, then I'll get started. I have a BITG circuit diagram here
which was originally created by dj9ss.
I have solved some unclear points and added some component values from parts of my BITG. The schtplan initially only contains the RF part. I start with the control when the RF works.
I still need some help calculating the missing component values. For example, there is a filter L7 L8 L9 on page 4 and the frequency multiplier also on page 4.
Then there are the FL17 on page 4 and both filters on page 5 of the FL1 as structure on the pcb. Another point that comes to mind is the 1GG5-4202.
it is a diode-based reverse power limiter. There are probably other manufacturers that make a similar product.