Serial/Parrallel interface

App_rpt-users
1

Hello Carl,

Yes, chan_usbradio and chan_simpleusb both support use of a parallel port. I don't believe the XIPAR project does.

I have had tremendous success using the parallel port for COS,PTT and AUX/GPIO on my nodes.

As you mentioned, the CM108 fobs are becoming harder to find, and some of us have great difficulty soldering to tiny SMT pins. While I have successfully modified CM108 fobs, I have destroyed two fobs in the process.

The parallel port offers several advantages, including many AUX/GPIO pins, and the ability to operate several radios from a single parallel port. I have successfully tested as many as 5 radios on a single parallel port using COS and PTT, and still had at least 3 pins left for GPIO.

It should also be noted that a standard IRLP board (or generic equivalent) is supported, and even a simple
"Rigblaster" type interface could be made to work with an adapter.

Check out my web page for some ideas: http://www.qsl.net/k0kn/plri.html
Keep in mind that app_rpt does not support the hardware DTMF decoder on the IRLP board, so you can omit that section of the schematic, and build only the transistor switches.

73 for now,

Kyle
K0KN
Allstar 2210-2215

···

--- Original Message ---

Hi group,

Carl M1ELR here, I noticed in a post a few days ago there was mention of
using the Parallel port for PTT or COR, is this possible?

I currently run my node using the Centos install package from the Allstar
site but can change to the install version from Xipar if needed.

I have without success been buying sound fobs to build a new interface and
now have a drawer full of USB fobs that I can't mod, if the I/O wasn't via
the USB sound fob that would make life so much easier as the CM108 seems to
be getting harder to source.

Thanks,

Best Regards

Carl M1ELR, Allstar node 27473

2

Has anybody tried using a DB9 serial-to-USB adapter to get hardware
lines into and out of the machine?

I've been struggling to find a ready-made device complete with driver
for Windows and have come up empty. I'm thinking of just overcoming my
laziness and doing it myself.

Perhaps the same thing could be done in a generic way in linux such that
you hook the COR line from the radio to CTS line of the adapter, and PTT
to the RTS line. When you diddle them on the USB interface, the DB9
asserts the corresponding pin and off you go.

Since these adapters are in current production and demand, supply should
not become a problem for a long time. They are smaller than the DB-25
parallel interface which is deprecated and would likely become harder to
find as well.

Bote

From: K&R Yoksh
Sent: Sunday, 02 October, 2011 13:49

Hello Carl,

Yes, chan_usbradio and chan_simpleusb both support use of a parallel
port. I
don't believe the XIPAR project does.

I have had tremendous success using the parallel port for COS,PTT and
AUX/GPIO on my nodes.

As you mentioned, the CM108 fobs are becoming harder to find, and some
of us
have great difficulty soldering to tiny SMT pins. While I have
successfully
modified CM108 fobs, I have destroyed two fobs in the process.
...

73 for now,

Kyle
K0KN
Allstar 2210-2215

Hi group,

Carl M1ELR here, I noticed in a post a few days ago there was mention

of

using the Parallel port for PTT or COR, is this possible?

I currently run my node using the Centos install package from the

Allstar

site but can change to the install version from Xipar if needed.

I have without success been buying sound fobs to build a new interface

and

now have a drawer full of USB fobs that I can't mod, if the I/O wasn't

via

the USB sound fob that would make life so much easier as the CM108

seems to

···

-----Original Message-----
--- Original Message ---
be getting harder to source.

Thanks,

Best Regards

Carl M1ELR, Allstar node 27473