You could reconfigure your CI-V interface to take power from a wall 
wart or some other convenient source of DC power. That would 
eliminate any dependence on the ALE software properly configuring 
the modem-control signals for power supply duty.

   73,

       Dave, AA6YQ

--- In [email protected], KV9U <[EMAIL PROTECTED]> wrote:
>
> A good point and I did consider adding this when I built my 
homebrew 
> CI-V interface. Because power is supplied to the interface via the 
RTS 
> and/or the DTR lines and you can turn that off and on with some 
programs 
> (e.g., Commander) via software control. But because Commander 
provides 
> the necessary PTT controls to the ICOM series of radios via the CI-
V 
> port, I did not see any value complicating the design with the 
> additional PTT switching.
> 
> I am not sure if the PC-ALE program provides the necessary on 
function 
> for the DTR so that there would be operating voltage present. So 
it may 
> not work even if I did add the new circuit since I would have to 
turn 
> off the always on RTS line as it would be used for controlling.
> 
> 73,
> 
> Rick, KV9U
> 
> 
> 
> 
> Dave Bernstein wrote:
> 
> >If the ALE software can only key the transceiver via RTS, you 
could
> >build a one-transistor RTS-to-PTT interface for the transceiver
> >control serial port. This interface would be ignored with the rest
> >of your soundcard software (which does tx-rx switching via CI-V
> >commands), but would allow the ALE software to tx-rx switch 
without
> >your having to move cables around.
> >
> >   73,
> >
> >      Dave, AA6YQ
> >
> >  
> >
>






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