When I got my TH-D7 I was intrigued…. In Australia the Ham Band goes
from 420 MHz to 450 MHz (with some regions restricted for various reasons
and timeframes). But I could only get my TH-D7 to transmit on UHF within
the region 430-440 MHz. This is only 1/3 of the Australian HAM band.
For Australia: You want diodes 0 and 1 to be removed, and 2 and 3 to be
present. Normally in Australia, only diode 1 is present. The green wire is
diode 0 or D502. Diodes 1-3 are D503, D507 and D508 respectively.
for a description of the diode array.