To modify clarifier for maximum frequency range on transmit and receive, remove
 diodes D44, D75, and D51. Next remove resistors R44, R174, and R149.
 Move blue wire that comes from center leg of voice lock to cathode side
 of D51 ( on PC board ), and move
 orange wire that comes from top of voice lock to 
continous 8 volt source. Adjust L22, L23 and L59 to frequency 
with voice lock set to the 12 O'clock position.