Re: PTT/CI-V Interface
-----Original Message-----AA6YQ comments below
From: dxlab@... [mailto:dxlab@...]On Behalf Of
Lee A. Ratcliff
Sent: Friday, December 25, 2009 3:12 PM
Subject: [dxlab] PTT/CI-V Interface
I am looking at building another CI-V interface
(http://www.qsl.net/g3vgr/civ.html). I use the CI-V for PTT when using
Would building a PTT circuit (using RTS) on the same serial port as the CI-V
cause any problems?
1. check the "suppress CAT" box in the PTT panel on the Config window'sNo problem. If you're going to do that, I would suggest tbat you
2. set the RTS panel on the Config window's Ports tab to "on to xmit".
RX and TX via CI-V command, relying instead on the external RTS switchingThus Commander will ignore your transceiver's ability to switch between
circuit driven by the RTS signal. CI-V commands take time to send; as long
as you have the external interface, let Commander exploit it.
uses this signal as a power supply.Don't forget to set the DTR panel to "always on", as your CI-V interface
I know that both functions can not be used at the same time.
conflictchecking the "suppress CAT" box as suggest above will eliminate an
The only time I would need the PTT is when using programs where CI-V is not
available, i.e. CHIP64 by IZ8BLY.
In this case, would RTS and CTS still be tied together?
should not be tied to CTS (pin 8). Its ok to leave pin 8 unconnected.If RTS (pin 7) is being used to drive the RX-TX switching circuit, it