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PA2AGA > HDDIG 05.12.99 07:33l 174 Lines 6196 Bytes #-9661 (0) @ EU
BID : HD_99_303B
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Subj: HamDigitalDigest 99/303B
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Date: Sat, 04 Dec 99 23:33:40 MET
Message-Id: <hd_99_303B>
From: pa2aga
To: hd_broadcast@pa2aga
Subject: HamDigitalDigest 99/303B
X-BBS-Msg-Type: B
happened by accident. I'm in the SF Bay area, btw.)
I believe there's a schematic in the ax25-howto on how to make the
soundmodem cable. Linux
is a little fussy about what soundcards you use. I reccommend finding a
geniune creative Labs
Sound Blaster/Pro card with jumpers or Windows Sound System card. Right
now, Linux
soundmodem accesses the hardware directly rather than using the Linux sound
drivers --
which kind of sucks if you have a sound card that has a Linux driver, but
isn't supported by sound modem.
The default mixer settings on Linux, I found, were a little funky and my
speaker is hooked to the mike input
rather than line input. So, that's something to check if you have trouble.
The SB Pro card is nice,
because it has a little pot, right on the back of the card for setting the
output level.
Sv2agw also works with soundcards, and it supports any sound card. Though
it also is a little
finicky about what soundcards work at 9600. Though sv2agw, I believe will
run almost anything
at 1200 baud. I think sv2agw only supports serial port t/r switching,
though I'm not sure about that.
"Rob" <NoEmail@NoWay.com> wrote in message
news:Ogg_3.192769$5r2.443349@tor-nn1.netcom.ca...
> Is this PTT interface the same used by many PSK31 programs for use with a
> soundcard?? (e.g. G3PLX PSK31 program for windows or LOgger)
>
> Rob
>
> "Rob Janssen" <nomail@pe1chl.demon.nl> wrote in message
> news:slrn83i5nb.a4g.nomail@linux.pe1chl.ampr.org...
> > Rob <NoEmail@NoWay.com> wrote:
> > >With Linux, do you only need a soundcard?? (Or do you also need some
> other
> > >hardware??)
> >
> > For modes that require automatic keying of the transmitter (e.g. packet
> > radio), you also need to construct a trivial interface to control the
> > transmitter PTT line from the PC.
> > This is not required when you only want to decode.
> >
> > Rob
> > --
> >
>
+----------------------------------+--------------------------------------+
> > | Rob Janssen pe1chl@amsat.org | WWWhome:
http://www.pe1chl.demon.nl/
> |
> > | AMPRnet: rob@pe1chl.ampr.org | AX.25 BBS:
PE1CHL@PI8WNO.#UTR.NLD.EU
> |
> >
>
+----------------------------------+--------------------------------------+
>
>
>.
------------------------------
Date: Mon, 22 Nov 1999 18:40:40 -0500
From: "Rob" <NoEmail@NoWay.com>
Subject: Decoding packet with a soundcard in Windows
Many thanks for info.
I downloaded the SV2AGW packet engine and will give it a try with my sound
card for fun. (I already have a 1200 bd and 9600 bd TNC).
I see that the SV2AGW packet engine will also work with TNCs in KISS mode.
I may try that also. The real benefit that I can see is that the SV2AGW
engine supports not only AX25 but also IP/TCP... Have you tried IP/TCP with
SV2AGW?? (I don't think that the SV2AGW engine will replace NOS since I
don't believe that the BBS accepts both AX25 and IP/TCP connects etc..)
I will also give LINUX a try one day. I have an old 386 with a 16 bit Sound
Blaster card collecting dust but the hard drive is small -- only 70MB.
Probably too small for LINUX. The 386 is so old that I cannot easily
upgrade the hard drive. I will have to look for another old computer for
LINUX experimentation. I hear that there are LINUX drivers not only for
packet but also for PACTOR, RTTY etc. Sounds great!
73's
Rob
"Cathryn Mataga" <cathryn@junglevision.com> wrote in message
news:PWj_3.1254$LK3.48899@nuq-read.news.verio.net...
> The T/R switching cable is pretty easy. Linux supports both the
> serial and parallel port for this. Me, I went to the local electronics
> store and picked up a big pack
> of 2n2222's with the little metal cases -- and they seem to work pretty
good
> for this.
> On Linux I use parallel port, since my serial ports are filled up
> with other TNC's and stuff. I run one soundmodem with Linux using a SBPro
> and an old FM
> 2m mobile radio for 1200 baud packet. And another soundmodem in Windows
> using
> SV2AGW with an MFJ 8621 for 9600 baud soundmodem. For that I use a
Diamond
> monster
> sound card.
>
> (As a curious side note, I have two ports, vhf and uhf, both which can
reach
> the gateway at w6yx.
> So, if you telnet to my vhf port, what happens is that packets to me come
in
> over the VHF, while
> packets back to you come in over the UHF 9600 port -- so it's sort of a
> goofy kind of duplex that
> happened by accident. I'm in the SF Bay area, btw.)
>
> I believe there's a schematic in the ax25-howto on how to make the
> soundmodem cable. Linux
> is a little fussy about what soundcards you use. I reccommend finding a
> geniune creative Labs
> Sound Blaster/Pro card with jumpers or Windows Sound System card. Right
> now, Linux
> soundmodem accesses the hardware directly rather than using the Linux
sound
> drivers --
> which kind of sucks if you have a sound card that has a Linux driver, but
> isn't supported by sound modem.
>
> The default mixer settings on Linux, I found, were a little funky and my
> speaker is hooked to the mike input
> rather than line input. So, that's something to check if you have
trouble.
> The SB Pro card is nice,
> because it has a little pot, right on the back of the card for setting the
> output level.
>
> Sv2agw also works with soundcards, and it supports any sound card. Though
> it also is a little
> finicky about what soundcards work at 9600. Though sv2agw, I believe will
> run almost anything
> at 1200 baud. I think sv2agw only supports serial port t/r switching,
> though I'm not sure about that.
>
> "Rob" <NoEmail@NoWay.com> wrote in message
> news:Ogg_3.192769$5r2.443349@tor-nn1.netcom.ca...
> > Is this PTT interface the same used by many PSK31 programs for use with
a
> > soundcard?? (e.g. G3PLX PSK31 program for windows or LOgger)
To be continued in digest: hd_99_303C
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