Mineoro 2-Box -- 492 feet range?

[Fred]

Hi Morgan,
thanks for info.
My skepticism goes to the device tecnhology explanations, not about you
Here goes the last circuit , PCB3.
I think there is small mistakes:
-near T4 collector a connection is probably missing, a wire maybe?
-the diode in parallel to c4/r7 etc has no reference

Thanks!
PS: i really dont see the point of the presence of R12 on thi PCB instead of PCB2....more wires for nothing?
One more thing: i think we can name the builder "Mr.Darlington" :-)

Regards.
Fred.