Pic Interface Problem - Pic I/F and JR XP652

[Henry]

I have just built the serial I/F supplied with the FMS package (16F84 ver) for a friend of mine who has no experience with electronics,he is running Win2K and uses a JR radio.
I have gone through quite a few threads and have seen it mentioned that the JR radio,s have a LOW signal input to the interface and that some mods have to be done,however I cant seem to find any definite solutions to this problem.
Is there anyone out there who has had the same problem ? if so could you please help me to help my friend and advise me how to go about doing this mod.
All help would be appreciated.

[overhead]

Hey Henry,

Have a look at the PIC Serial interface circuit and explanation at my website. It may have the answer for you.

Dennis