[chirp_users] chirp issue with IC92AD
Richard E Ravich
Sat Sep 20 16:00:23 PDT 2014
Interesting problem -- I had one of those older USB to serial cables
that had the old Prolific chip in it and it was blocked by the newest
drivers that are in Microsoft, so I purchased a Plugable USB to serial
converter which is supposed to have the later version of the Prolific
chip in it.
I tried it using the RS92 software from Icom and it works just fine, but
using it with chirp, it appears not to be communicating with the radio
because if I disconnect the radio, I get the same information back as I
do if the radio is connected -- all invalid. I don't suspect that the
problem is in the cable, but it could be the issue and maybe I need to
go out and buy a third cable with the acceptable chip in it to get chirp
to work.
Does anyone know what the voltage of the signals are coming from an
IC92AD? Are they "true" RS232 signals (ie +12 to -12 volts) or are they
TTL voltages 0 to +5 volts? Is there a way to tell the Prolific chip
that these are TTL voltages and not RS-232 voltages? Maybe that would
help some people.
de WD6FIE
Richard Ravich
More information about the chirp_users
mailing list