Does anyone know of a PSK31 program that can use a HamComm interface?
Please reply to kc5reb@arrl.net. Thanks.
Jim
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Quoting Jim Munden to All <=-

Does anyone know of a PSK31 program that can use a HamComm interface? Please reply to kc5reb@arrl.net. Thanks.

Best to reply in here, Jim, then we can all share the information in
the true spirit of FidoNet (and Ham Radio).

All the PSK31 programs I have seen have used the sound board. You
could try e-mailing Peter Martinez G3PLX and asking him. Do let us
know in here what you find.

73

David

... G4DMP - A sign of Amateur Radio - the world's finest hobby
___ Blue Wave/DOS v2.30

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Hi JIM,


03-Aug-00 09:09:42, JIM MUNDEN wrote to ALL
Subject: PSK31

Does anyone know of a PSK31 program that can use a HamComm
interface?

Forget this "sweet dream";). I guess that it's impossible
due to the basic principles of PSK31.

WBR,
Serge Kontarev (RU3BB)

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Hello, and thank you for replying. I use Telnet at work, and the
connection is somewhat unreliable, which is why I provided my regular
e-mail address. Since writing, I found that the sound card in my
old laptop does work with the Windows PSK31 program. Now I need to rig
the PTT line from my serial port, per the instructions. I have my
General license, but am currently limited to the 10-meter band as my old
Swan is suffering from a loud 60 Hz hum in the audio output, and I don't
want to inject it into the computer.
Well, back to work. Take care, David.
Jim


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Hello JIM.

03 Aug 00 09:09, you wrote to ALL:

Does anyone know of a PSK31 program that can use a HamComm interface? Please reply to kc5reb@arrl.net. Thanks.

From what I can tell from the brief few minutes spent reading about it,
there's no need to use it with HamComm. I got the following from an
Amateur Radio enthusiests web site.


"A NEW, old mode:

Whoa! Forget RTTY and the Hamcomm interface. Here's the latest and
greatest to hit digital communications since the 741 opamp.

PSK31 is the slick invention of Peter Martinez, G3PLX, the father of
AMTOR. And chances are you already have all the equipment you need to get going. Here's the recipe: Download the software (for W95) from;

http://aintel.bi.ehu/psk31.html

Connect your PC's soundcard to your HF rig (capable of USB), decide on a
PTT method, and bingo! You're receiving clear copy. Right now the mode is limited to "Keyboard to Keyboard" chatting, but you can bet, that file transfers won't be far behind.

Check out the article in the May 1999 QST.

I love this hobby!"


I also found a site that you can goto to get the software and some simple schematics to help put your computer on the air.

If there's any further interest, I'll post the URLs and/or make the stuff available via an email request to my system.

I've installed the program and it looks very promising. Now, I just have
to get it hooked up to a radio...



... Real radios glow in the dark!
--- Twit(t) Filter v2.1 (C) 2000
* Origin: KB6PI's Cantina * Santa Ysabel, CA (1:10/22)

Hello Roy! Thanks for the reply. I found that the sound system in my
old laptop is in fact compatible with PSK31, so that solved that
problem. Unfortunately, it has only one serial port, and it's connected
to my TNC for APRS use. None of my radios have VOX capability, and it
seems a waste to tie up a serial port just for a PTT line. I wonder
if there is a circuit that could be inserted in the sound card's output
line to activate the PTT. It ought to be fairly simple, not much more
than a switching transistor and a few other components. Of course, it
needs to be quite fast so none of the signal is lost. Hmmm...Time to go surfing again!
73's de Jim




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... I found that the sound card in my old laptop does work with
the Windows PSK31 program. Now I need to rig the PTT line from my
serial port, per the instructions. I have my General license, but
am currently limited to the 10-meter band as my old Swan is suffering
from a loud 60 Hz hum in the audio output, and I don't want to inject
it into the computer.

Good to hear that it works okay, Jim. PSK31 is certainly a fascinating mode. I
have also tried JVComm32 for Fax and SSTV, which can also be set to use the sound card as the interface to/from the transceiver. I have not done any transmitting on it, but it's quite exciting watching those SSTV pictures coming
in on 14.225-14.235 MHz.

73

David

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Hello JIM.

07 Aug 00 01:25, you wrote to me:

Hello Roy! Thanks for the reply. I found that the sound system in
my old laptop is in fact compatible with PSK31, so that solved
that problem. Unfortunately, it has only one serial port, and it's connected to my TNC for APRS use.

Does it have a parallel port you're not using? I found a circuit that can
be used on either DB25 or DB15 connectors.

None of my radios have VOX capability, and it seems a waste to tie
up a serial port just for a PTT line. I wonder if there is a circuit
that could be inserted in the sound card's output line to activate
the PTT. It ought to be fairly simple, not much more than a
switching transistor and a few other components. Of course, it needs
to be quite fast so none of the signal is lost.

The circuits I found should be fast enough. There's also a modification
to switching circuit by using an opto coupler that would isolate your old
Swan and keep you 60hz hum out of the puter.

Hmmm...Time to go surfing again! 73's de Jim

I'll post the URL where I found those circuits. Can't right now, but will
when I get home this afternoon.


... OSCAR birds don't have feathers!
--- Twit(t) Filter v2.1 (C) 2000
* Origin: KB6PI's Cantina * Santa Ysabel, CA (1:10/22)

Hello! I think the base unit may have a parallel port. The laptop
interfaces with it using a miniature SCSI port. I don't use a printer
with it, so the port is available.
With regards to the Swan, I'm pretty sure the hum originates in the
power supply. According to the schematic, the only AC output to the rig
is for the tube heater circuit. I installed a rectifier to change it to
DC, and changed all the capacitors. I also found the choke burned out,
but haven't replaced it yet. When I do, I hope the hum will go away.
Otherwise I may try putting a filter in the audio circuit to eliminate
the hum.




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