[amsat-bb] DireWolf config file question

[KO6TZ BOB]

Steve,

Dire Wolf like the AGW-PE has the capability to be used as a dual-port 
TNC.  You

can connect two radios on different bands at different baud rates to the 
stereo

sound card in a desk-top computer.  Using this configuration I have 
configured the

first port to the "left" channel S/C and key via the RTS lead from the 
COM port.  The

second port is on the "right" channel S/C and keyed via the DTR lead of 
the COM

port.

The reference to a suitable interface can be a reed relay or an 
optoisolator (4N25).
Simply connect the RTS or DTR lead thru the windings of the relay or 
thru the

optoisolator.  Detailed schematics of these circuits should be an easy 
search on the

WEB.

I have used this configuration to digi 300 baud APRS traffic from 30m to 
the local

2meter 1200 baud APRS network .

I mentioned 'desk-top computer', this is because many laptops do not 
have stereo

line-in jacks, just mono.

BOB
KO6TZ




I'm trying to set up the config file in Direwolf. The radio is a Yaesu 
FT290RII and

the interface is a Signalink USB.
The Direwolf manual says this about setting up the PTT configuration:
#
# If not using a VOX circuit, the transmitter Push to Talk (PTT)
# control is usually wired to a serial port with a suitable interface 
circuit.
# DON'T connect it directly!
#
# For the PTT command, specify the device and either RTS or DTR.
# RTS or DTR may be preceded by "-" to invert the signal.
#
#PTT COM1 RTS
#PTT COM1 -DTR
#PTT /dev/ttyUSB0 RTS
Unfortunately, I don't know what that means. Anybody know which one I 
should

use? Any hints, tips, suggestions would be much appreciated.

Steve Kristoff AI9IN
EM79ji
Oldenburg IN
skristof at etczone.com