[UK-CONTEST] PTT

[Ian White GM3SEK]

Les Elliott wrote:
>A club member has an FT1kMP, wants to try digital modes, using an interface
>which uses an opto-isolator from serial port to PTT line on the 5 pin DIN
>'Packet' socket, rig will not key, any suggestions?

Has he tried the obvious - shorting the PTT line with a screwdriver, at 
the output from the opto?

Likewise, has he confirmed a change in voltage at the input of the opto 
when the computer is supposed to be keying the PTT?


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73 from Ian GM3SEK