My Micophone for a FT-450 has a active circuit and need 5 volt supply @100mA (Yaesu MH67) to operate, I also have a DTMF Mic it requires 5 volts also.
Looking at the strapping notes, is there a 8 volt pin, if so, I will wire up a 7805LS voltage reg to provied 5 volts out to power the Mic will make a small daughter board with the voltage reg with leads to connect to the MIC/AUX strapping block.
As a temp solution im using a old 600 ohm dynamic hand Mic , it works ok.
Regards
Frank VK3ZFS QF22MI
