[ICOM] 250 Hz mod for IC-765

[Rick Mintz]

Hi gang,



I am considering the following mod to my IC-765 to allow RTTY access to the 250 Hz filter. 



Can anyone that has done this mod tell me if the standard 500 HZ RTTY filter is still available after the mod is installed?



de Rick, W1TY





Using the 250 Hz second IF CW Filter in RTTY mode [From: Dave KD6TO]

 

This allows use of the 250 Hz second IF CW filter (FL-53A) in RTTY mode. Install the optional 250Hz filter according to the instructions (if not already

installed).

 

Remove the covers to gain access to the Main Unit PCB.

 

Take a 1SS133 diode or equivalent and solder the positive side to the positive side of D42 (accessible at pin 15 of IC11) and the negative side to the negative

side of D39.

 

Re-assemble and test.

 

The CW 250Hz pushbutton will now select the 250Hz filter in both CW and RTTY modes.