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- de DG8FZ @ DB0EAM
-
- How to make the VOX of an IC-271,471,1271 usable for FM :
-
- 1'st type of 'main-board' :
-
- The only thing to be done is to add a diode such as 1n4148 or bax13 on the
- MAIN board on the position D74
- When D74 is inserted ... the vox works in FM also.
- The diode is on the shematic diagram of the Main board but
- is not mounted on the pcb in the factory.
-
- 73's de stefaan
- ON4BY @ ON4HU
- 16/03/1990 18.31 h
-
-
- 2'nd type : (On this board a D74 is present (near PA- and RF-YGR- Unit))
- (It might be not present in the plans !)
-
- Disconnect the cathode of D69 from it's old postition.
- It's new position is the cathode of D50 or D51
-
- name ! position on main board ! (old) function !
- D69 ! near 'CW-DELAY'. ! 'FM -VOX-OFF' ! FM 8V
- D50 ! near 'RF-YGR-Unit' ! 'USB-VOX-ON' ! USB8V
- D51 ! near 'RF-YGR-Unit' ! 'LSB-VOX-ON' ! LSB8V
-
- 73's de karl
- DG8FZ @ DB0SAO
- 20/03/1990 16.52 h
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