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To : PSK31@WW.SYD.NSW.AUS.OC
De: Psk31 Digest <owner-psk31@aintel.bi.ehu.es>
Para: <psk31-digest@bipt106.bi.ehu.es>
Asunto: Psk31 Digest V1 #434
Fecha: sßbado 24 de junio de 2000 4:52
Psk31 Digest Saturday, June 24 2000 Volume 01 : Number 434
In this issue:
[none]
[psk31] Re: PSK31 for WIndows 3.1, DOS, etc.
[psk31] PSK31 band usage
[psk31] RIGBLASTER report
[psk31] Re: Pentium requirements
[psk31] Sound Cards and the like...
[psk31] How much computer for PSK31?
Re: [psk31] sound cards
[psk31] question on jumpers with rigblaster
[psk31] [PSK31] Re: Soundcards
Re: [psk31] How much computer for PSK31?
Re: [psk31] How much computer for PSK31?
Re: [psk31] RIGBLASTER report
RE: [psk31] PSK31 band usage
Re: [psk31] Encouraging
Re: [psk31] sound cards
Re: [psk31] Re: your mail
Re: [psk31] Ease up/Sound Cards
Re: [psk31] sound cards
Re: [psk31] Encouraging
See the end of the digest for information about psk31-digest
----------------------------------------------------------------------
Date: Fri, 23 Jun 2000 12:11:50 PDT
From: axeco@juno.com
Subject: [none]
Dear List,
John N1OLO writes:
>The other probelm is finding a 16 bit sound card that will work properly
in a
>486 computer. Most 486 machines that have original sound cards had an 8
bit
>sound card in many cases. Finding a 16 bit card now would take a great
deal
>of scrounging.
RE-PC in Seattle has generic 16-bit ISA bus sound cards, both used and
new, in the $10 to $20 range.
Usual disclaimer - I don't work for them, just a customer.
Dave W7AGJ
________________________________________________________________
YOU'RE PAYING TOO MUCH FOR THE INTERNET!
Juno now offers FREE Internet Access!
Try it today - there's no risk! For your FREE software, visit:
http://dl.www.juno.com/get/tagj.
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------------------------------
Date: Fri, 23 Jun 2000 19:30:46 +0000
From: Peter Martinez <Peter.Martinez@btinternet.com>
Subject: [psk31] Re: PSK31 for WIndows 3.1, DOS, etc.
From Peter G3PLX
To reply to the comment from Dave about why a 31 baud mode needs lots
of CPU power, the point is that the PC is not just handling 31
bits/sec of data but processing the raw audio: that's no longer 31
bits/sec but 176400 bits/sec (16 bits of audio multiplied by 11025
samples/sec). IT's the main CPU in the PC that's doing the crunching.
If there is a processor on the soundcard, it isn't being used, at
least not in any PSK31 that uses anything derived from my original code.
If the program is only doing the basic processing required to
generate and receive PSK31, and perhaps the tuning display, then it
can be done with a 486. I have heard that is has been done with a
50MHz 486 but I don't think anyone ever did it with a 386. My
original PSK31SBW program is probably the best thing to try if you
think your PC might be too slow. Incidently PSK31SBW will run quite
happily with W95 and W98 and even Windows NT, although you will need
a faster PC to do so than the 50MHz which will work with Win 3.1.
The later PSK31 programs not only do a great deal more processing for
the spectrum analyser but the video display load is much higher to
see all this on the screen. In addition, these later programs often
do the basic DSP processing in 32-bit code compiled from high-level
languages which is much slower than my original 16-bit stuff written
in raw assembler.
I don't think anyone has done a PSK31 program that uses a soundcard
running under DOS. It's not because of speed or anything like that.
It's simply that soundcard manufacturers don't provide a universal
DOS driver, since Microsoft never documented a DOS program interface.
That means that I couldn't have written a DOS PSK31 soundcard program
that could have worked with ANY soundcard: I would have had to
specify that it was soundblaster-compatible, and that's as difficult
as saying that a PC is "IBM-compatible". I believe Brian Beezley's
RITTY software ran under DOS and was locked into needing a Creative
Graphics SB16.
PSK31 programs have been written for the ADSP2181, specifically for
the SHARC DSP kit, for the TMS320C51, specifically for the Texas DSK,
for the SCS PTC-2 terminal, and the first-ever PSK31 program (written
over four years ago now) I wrote for the now-obsolete Motorola
DSP56002EVM. That one originally ran under DOS and could have run on
any old 80X86 so long as it had a VGA video card and a COM port. You
can find all this software from links on the
<http://aintel.bi.ehu.es/psk31.html> page.
73
Peter
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------------------------------
Date: Fri, 23 Jun 2000 20:00:26 +0000
From: Peter Martinez <Peter.Martinez@btinternet.com>
Subject: [psk31] PSK31 band usage
From Peter G3PLX
W0MN quoted some frequencies for PSK31 operating which are
misleading. For a start all the frequencies he gave were 500 Hz low.
Secondly some of them were Region 1 usage which neccesarily differs
from Region 2 on account of band allocation differences. Thirdly two
of the frequencies he gave were out by 10 kHz.
The frequencies I quote below are the bottom edges of PSK31 operation
as far as my own experience goes. These are the actual radiated
carrier frequencies.
3580 (not 3579.5) is the bottom of the IARU Region 1 bandplan for
RTTY and that's where all the European PSK31 is currently taking
place. I don't know where it is in region 2.
7035 (not 7034.5) is the bottom of the IARU Region 1 RTTY band and
that's where all the European PSK31 activity is taking place. I think
it's up around 7080 in region 2.
10140 (not 10139.5) is the bottom of the IARU RTTYband (all regions)
and that's where PSK31 has been recommended since it started, but
that part of the band is heavily blocked by non-amateur signals in
Europe and the activity is fragmented. I hear most PSK31 activity a
few kHz lower.
18100 (not 18109.5) is the bottom of the IARU RTTY band (all
regions), and that's where all the activity I have heard is taking place.
21080 (not 21079.5) is the bottom of the IARU RTTY band (all regions)
but although PSK31 activity started here, the de-facto PSK31 activity
band seems to have settled at 21070.
24920 (not 24919.5) is the bottom of the IARU RTTY band (all
regions), and this is where all the activity I have heard is taking place.
28120 (not 28119.5) is within the IARU RTTY band and is where all
PSK31 activity is taking place that I know of. This frequency was
chosen to enable certain classes of license that cannot work further
down the band to make use of PSK31.
While writing this note, I wonder why it is that the majority of
PSK31 operators seem to be incapable of subtracting one kilohertz. I
call CQ repeatedly about 150Hz above all the above frequencies for
ages and no-one replies, and everyone else is crowded up more than 1
kHz higher. Of course I know the answer. It's the old old story of
the difference between dial frequency and radiated frequency. Please
don't fall into the habit of referring to PSK31 operating frequencies
by what your dial reads: it's the actual radiated frequency that
counts. Your own dial frequency is of no relevance to the rest of us,
because the rest of us don't know what your audio frequency is, or
even which sideband you are using. Don't assume the other man is
using 1 kHz and USB.
73
Peter
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------------------------------
Date: Fri, 23 Jun 2000 15:57:55 -0500
From: "Gil Baron W0MN" <gbaron@home.com>
Subject: [psk31] RIGBLASTER report
I ordered my Rigblaster on June 20 and it was delivered today June 23. That
is pretty good service.
I have had very good signal reports so it works and it is really nice to
have the Mike always ready and to have the sound card output cut off so that
I get no sound in the speakers when transmitting yet it is ready for use
later.
I did have one negative, they shipped a second one that I did not order.
They promised to straighten that out.
NET, I can unqualifiedly recommend the interface.
- --
Gil Baron W0MN http://members.home.net/gbaron/
44:04:55.9 N 92:30:46.206 W 1050' NAD27
"Hierro candente, batir de repente"
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------------------------------
Date: Fri, 23 Jun 2000 17:31:25 -0500
From: John Chamberlain <chamber@cord.org>
Subject: [psk31] Re: Pentium requirements
At Thu, 22 Jun 2000 18:21:15 PDT Dave W7AGJ wrote:
>From: axeco@juno.com
>Subject: [none]
>
>I've seen a number of posts to this list over the past couple of weeks
>discouraging folks from using anything less then a Pentium for PSK-31...
(when posting to a list, include a subject, please)
Dave,
Penitum's aren't absolutely necessary for PSK. I ran for several months
using a 486/66 laptop with 12 Mb RAM and Win95. I even ran Digipan for
awhile, but it admittedly took several seconds to load.
But I wouldn't bemoan your old 386 or 486 too much. Instead be a little
more proactive and shop around for a reasonably priced motherboard
upgrade. I found a 200 MHz Pentium with 64 MB RAM for $45 at a recent
hamfest. I replaced the old 386SX motherboard from an essentially useless
computer and voila! I'm in business for the price of a movie and dinner date!
John Chamberlain, AC5CV
http://www.qsl.net/ac5cv, mailto:ac5cv@qsl.net
Waco, Texas (grid square EM11)
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------------------------------
Date: Fri, 23 Jun 2000 19:15:08 -0400
From: "James P. Collins, Jr." <w3ixj@home.com>
Subject: [psk31] Sound Cards and the like...
With so many questions about soundcards I wonder if two tin cans and a
string would work!
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------------------------------
Date: Fri, 23 Jun 2000 16:29:10 -0700 (PDT)
From: michael watts <wy6k@yahoo.com>
Subject: [psk31] How much computer for PSK31?
All these heroic efforts to use old machines sure
seems like a real waste of time and much ado about
nothing. New machines that run everything well are
just too cheap. I bought a 466 celeron with 10 gig
drive, 128 meg ram, built in ethernet, built in sound,
2 usb ports, high res graphics, 16x CDRom, floppy
drive, W98, Word, Excel, and a load of other useful
software for $600 about two and a half months ago. It
made everything involved in interfacing to the rig and
using PSK31 totally simple and non-frustrating. It's
the same machine I have hooked to DSL and the internet
and I use it for accessing reflectors, packet
networks, all logging, etc.
In today's Fry's ad, there is a 500Mhz PIII with 128
meg and 20 gig drive for $200.
To not go out and get one of these machines means a
lot of fussing around and pleas for help on the
reflector. This made a lot more sense when it cost
$1500 + to upgrade. But for a few hundred bucks you
can get a whole new machine with sound boards that
work etc and quit worrying about it.
I suppose it's ok if you like doing that sort of thing
instead of operating. Sort of like my love for old
Collins gear. I spend time and money I'll never get
back and it is only justified as a labor of love, I
suppose.
I'm not suggesting that it is somehow wrong to work
with these old PCs, just pointing out how cheap it is
to start fresh if you want to.
Mike wy6k
__________________________________________________
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------------------------------
Date: Fri, 23 Jun 2000 18:40:56 -0500
From: "Randall" <Firefox@southwind.net>
Subject: Re: [psk31] sound cards
I was wondering if it would be possible or has anyone tried to setup their
computer using a recording of a PSK signal , playing it on a mono tape
player into the sound card input, to test the computer for receive
capability. Rather than trying to wait until one comes across on the radio.
Would this be practical and where could one find a recording of PSK ?
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------------------------------
Date: Fri, 23 Jun 2000 19:50:40 EDT
From: W8JOE@aol.com
Subject: [psk31] question on jumpers with rigblaster
Hello, I just got a rigblaster for a four pin mic, but they sent me the
manual for an eight pin mic.
I have a FT 101zd. Does anyone know what the jumper hookups should be on the
jumpers?
Thanks, Joe.
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------------------------------
Date: Fri, 23 Jun 2000 19:51:58 -0400
From: Curt <cdunn@netsync.net>
Subject: [psk31] [PSK31] Re: Soundcards
FYI to all,
I have seen these 16 Bit Soundblaster cards, (ISA), at local computers shows
here on the East Coast in the $7 to $9 range still in the shrink wrap. Sold
as is of course, but have heard of no complaints. I might add that Win 98
Second Edition has the drivers for these cards already in the OS.
73, Curt KA2SLC
axeco@juno.com wrote:
> Dear List,
>
> John N1OLO writes:
>
> >The other probelm is finding a 16 bit sound card that will work properly
> in a
> >486 computer. Most 486 machines that have original sound cards had an 8
> bit
> >sound card in many cases. Finding a 16 bit card now would take a great
> deal
> >of scrounging.
>
> RE-PC in Seattle has generic 16-bit ISA bus sound cards, both used and
> new, in the $10 to $20 range.
>
> Usual disclaimer - I don't work for them, just a customer.
>
> Dave W7AGJ
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------------------------------
Date: Fri, 23 Jun 2000 18:58:33 -0500
From: fkamp <fkamp@home.com>
Subject: Re: [psk31] How much computer for PSK31?
I think there may be a lot of hams who already have
computers. I think that might the reason to use the old
machines especially if its a laptop for mobile use.
michael watts wrote:
>
> All these heroic efforts to use old machines sure
> seems like a real waste of time and much ado about
> nothing. New machines that run everything well are
> just too cheap. I bought a 466 celeron with 10 gig
> drive, 128 meg ram, built in ethernet, built in sound,
> 2 usb ports, high res graphics, 16x CDRom, floppy
> drive, W98, Word, Excel, and a load of other useful
> software for $600 about two and a half months ago.
That is a great price for a lot of computer but if I can use
what I already have I can apply that $600 to a new radio,
antenna, linear amp, or maybe even a mini vacation.
I guess it all depends what a person considers his main
hobby. My main interest is ham radio even though I have
several capable computers networked throughout the home and
office. I still consider computers a necessary evil, not an
end in themselves.
> In today's Fry's ad, there is a 500Mhz PIII with 128
> meg and 20 gig drive for $200.
>
Now that is a deal but it sounds far too good to be true.
Bet you will have to sign up for ten years with an unkown
ISP at $75 a month to get that price.
I think all the efforts in using obsolete computers
(anything more than two weeks old ), is to get the biggest
bang for your buck. Not everyone is willing to pay for easy
interfacing by buying a new computer.
At least that is my slant on things, but then I value ham
gear over computer gear at any price.
Frank Kamp
K5DKZ
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------------------------------
Date: Fri, 23 Jun 2000 17:06:44 -0700 (PDT)
From: Chip Hood <km4af@yahoo.com>
Subject: Re: [psk31] How much computer for PSK31?
I took a P100, 24MB RAM, off of someone's hands (free
- - they wanted to get rid of it), added a $30 sound
card, and run Digipan, Zak., Logger, and all the
others just fine. no heroics required, and that's a
few hundred dollars I can use for something else.
Interfacing issues had much more to do with my rig
than the soundcard/computer.
I like having a dedicated cheap computer just for
PSK/TNC use - I don't worry if I blow it up, I don't
worry about running other programs at the same time as
PSK and inadvertantly sending out strange sounds over
the air, and I keep the PSK software in view and
running while I can do work and other things on my
"fancy" computer. And if I didn't have a fancy
computer, I'd be up and running for almost nothing.
And besides, its a good excuse to not throw out old
computers. Next time somebody says "Why do you need
to keep all 6 of those old computers and take up my
closet space?", you have an answer!
73
KM4AF -- Chip
- --- michael watts <wy6k@yahoo.com> wrote:
> All these heroic efforts to use old machines sure
> seems like a real waste of time and much ado about
> nothing. New machines that run everything well are
> just too cheap. I bought a 466 celeron with 10 gig
> drive, 128 meg ram, built in ethernet, built in
> sound,
> 2 usb ports, high res graphics, 16x CDRom, floppy
> drive, W98, Word, Excel, and a load of other useful
> software for $600 about two and a half months ago.
> It
> made everything involved in interfacing to the rig
> and
> using PSK31 totally simple and non-frustrating.
> It's
> the same machine I have hooked to DSL and the
> internet
> and I use it for accessing reflectors, packet
> networks, all logging, etc.
>
> In today's Fry's ad, there is a 500Mhz PIII with 128
> meg and 20 gig drive for $200.
>
> To not go out and get one of these machines means a
> lot of fussing around and pleas for help on the
> reflector. This made a lot more sense when it cost
> $1500 + to upgrade. But for a few hundred bucks you
> can get a whole new machine with sound boards that
> work etc and quit worrying about it.
>
> I suppose it's ok if you like doing that sort of
> thing
> instead of operating. Sort of like my love for old
> Collins gear. I spend time and money I'll never get
> back and it is only justified as a labor of love, I
> suppose.
>
> I'm not suggesting that it is somehow wrong to work
> with these old PCs, just pointing out how cheap it
> is
> to start fresh if you want to.
>
> Mike wy6k
>
__________________________________________________
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Get Yahoo! Mail - Free email you can access from anywhere!
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------------------------------
Date: Fri, 23 Jun 2000 20:09:10 -0400
From: "Floyd Sense" <sentek@sprintmail.com>
Subject: Re: [psk31] RIGBLASTER report
How do they handle the differences between mic plug wiring, such as between
Yaesu and Kenwood? Are there pluggable routings for the pins inside the
unit? That's the way the MFJ series of TNC switches works.
K8AC
Floyd Sense - Angier, NC
- ----- Original Message -----
From: Gil Baron W0MN <gbaron@home.com>
To: AA/PSK31General <psk31@bipt106.bi.ehu.es>
Sent: Friday, June 23, 2000 4:57 PM
Subject: [psk31] RIGBLASTER report
> I ordered my Rigblaster on June 20 and it was delivered today June 23.
That
> is pretty good service.
> I have had very good signal reports so it works and it is really nice to
> have the Mike always ready and to have the sound card output cut off so
that
> I get no sound in the speakers when transmitting yet it is ready for use
> later.
>
> I did have one negative, they shipped a second one that I did not order.
> They promised to straighten that out.
>
> NET, I can unqualifiedly recommend the interface.
>
>
> --
> Gil Baron W0MN http://members.home.net/gbaron/
> 44:04:55.9 N 92:30:46.206 W 1050' NAD27
> "Hierro candente, batir de repente"
>
>
> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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>
> More instructions on PSK31 Webpage: http://aintel.bi.ehu.es/psk31.html
> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>
>
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------------------------------
Date: Fri, 23 Jun 2000 19:29:32 -0500
From: "Gil Baron W0MN" <gbaron@home.com>
Subject: RE: [psk31] PSK31 band usage
I agree with you BUT I quoted these frequencies as a point to set because if
you set it at 070 with USB then you tone is going to be 0 Hz. Not too good.
Using the 500 Hz low allows you to use Zakanaka and all the other panning
programs (who would use anything else today) over a 2.5 KHz range with no
tuning and no problem with a tone too high or too low. That is the reason
for the 500 Hz low. Of course other regions I don't know about. It is good
to see these. I only gave these as starting points. Use your memories and
look. I personally wish it would expand to AT LEAST 14080 on 20. It is GOING
to get VERY crowded VERY soon as the number of users increase.
> -----Original Message-----
> From: owner-psk31@bipt106.bi.ehu.es
> [mailto:owner-psk31@bipt106.bi.ehu.es]On Behalf Of Peter Martinez
> Sent: Friday, June 23, 2000 3:00 PM
> To: psk31@bipt106.bi.ehu.es
> Subject: [psk31] PSK31 band usage
>
>
> From Peter G3PLX
>
> W0MN quoted some frequencies for PSK31 operating which are
> misleading. For a start all the frequencies he gave were 500 Hz low.
> Secondly some of them were Region 1 usage which neccesarily differs
> from Region 2 on account of band allocation differences. Thirdly two
> of the frequencies he gave were out by 10 kHz.
>
> The frequencies I quote below are the bottom edges of PSK31 operation
> as far as my own experience goes. These are the actual radiated
> carrier frequencies.
>
> 3580 (not 3579.5) is the bottom of the IARU Region 1 bandplan for
> RTTY and that's where all the European PSK31 is currently taking
> place. I don't know where it is in region 2.
>
> 7035 (not 7034.5) is the bottom of the IARU Region 1 RTTY band and
> that's where all the European PSK31 activity is taking place. I think
> it's up around 7080 in region 2.
>
> 10140 (not 10139.5) is the bottom of the IARU RTTYband (all regions)
> and that's where PSK31 has been recommended since it started, but
> that part of the band is heavily blocked by non-amateur signals in
> Europe and the activity is fragmented. I hear most PSK31 activity a
> few kHz lower.
>
> 18100 (not 18109.5) is the bottom of the IARU RTTY band (all
> regions), and that's where all the activity I have heard is taking place.
>
> 21080 (not 21079.5) is the bottom of the IARU RTTY band (all regions)
> but although PSK31 activity started here, the de-facto PSK31 activity
> band seems to have settled at 21070.
>
> 24920 (not 24919.5) is the bottom of the IARU RTTY band (all
> regions), and this is where all the activity I have heard is taking place.
>
> 28120 (not 28119.5) is within the IARU RTTY band and is where all
> PSK31 activity is taking place that I know of. This frequency was
> chosen to enable certain classes of license that cannot work further
> down the band to make use of PSK31.
>
> While writing this note, I wonder why it is that the majority of
> PSK31 operators seem to be incapable of subtracting one kilohertz. I
> call CQ repeatedly about 150Hz above all the above frequencies for
> ages and no-one replies, and everyone else is crowded up more than 1
> kHz higher. Of course I know the answer. It's the old old story of
> the difference between dial frequency and radiated frequency. Please
> don't fall into the habit of referring to PSK31 operating frequencies
> by what your dial reads: it's the actual radiated frequency that
> counts. Your own dial frequency is of no relevance to the rest of us,
> because the rest of us don't know what your audio frequency is, or
> even which sideband you are using. Don't assume the other man is
> using 1 kHz and USB.
>
> 73
> Peter
>
>
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Date: Fri, 23 Jun 2000 21:53:30 -0400
From: "Robert Lay" <w9dmk@crosslink.net>
Subject: Re: [psk31] Encouraging
Dear Dave,
I think you will find that thd "DOS" version to which you refer is nothing
but a Test Harness" used in a DOS environment to evaluate the NON- DSP and
NON-sound card related issues of PSK31.
Putting it another way - it ain't no PSK31 program for QSO's.
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Date: Fri, 23 Jun 2000 21:51:17 -0400
From: "Robert Lay" <w9dmk@crosslink.net>
Subject: Re: [psk31] sound cards
Dear Randall,
Why don't you just use your PSK31 software and your PC with soundcard and
plug the output from the soundcard into your tape recorder and just do it.
All you have to do is tell your PSK31 program to send a file and then pick a
file to send. Voila!
> I was wondering if it would be possible or has anyone tried to setup their
>computer using a recording of a PSK signal , playing it on a mono tape
>player into the sound card input, to test the computer for receive
>capability. Rather than trying to wait until one comes across on the radio.
> Would this be practical and where could one find a recording of PSK ?
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Date: Fri, 23 Jun 2000 21:40:55 -0400
From: "Robert Lay" <w9dmk@crosslink.net>
Subject: Re: [psk31] Re: your mail
Dear Charles,
In PSK31SBW and in WinPSK the sound card is nothing but an A/D and D/A
converter - all FFT work is done in software by the PC. I would assume this
is true of the other extant PSK software.
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Date: Fri, 23 Jun 2000 21:53:44 -0400
From: "Robert Lay" <w9dmk@crosslink.net>
Subject: Re: [psk31] Ease up/Sound Cards
Dear Duane,
Ideally, what you are looking for is the CT-4170 from Creative Labs and is
often available in either a PCI or an ISA configuration. When they show up
at Best Buy, they are about $49 and well worth it. There is an Ensoniq
version, also from Creative Labs, that is quite similar and is even cheaper
when available.
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Date: Fri, 23 Jun 2000 21:00:46 -0500
From: "Randall" <Firefox@southwind.net>
Subject: Re: [psk31] sound cards
Cuz I don't know nuf about PSK to know I could do that.......that's why.....
......
Now I do so I will
Thanks for the tip...........
(It does make sense.)
- ----- Original Message -----
From: "Robert Lay" <w9dmk@crosslink.net>
To: "Randall" <Firefox@southwind.net>; <psk31@bipt106.bi.ehu.es>
Sent: Friday, June 23, 2000 8:51 PM
Subject: Re: [psk31] sound cards
> Dear Randall,
>
> Why don't you just use your PSK31 software and your PC with soundcard and
> plug the output from the soundcard into your tape recorder and just do it.
> All you have to do is tell your PSK31 program to send a file and then pick
a
> file to send. Voila!
>
> > I was wondering if it would be possible or has anyone tried to setup
their
> >computer using a recording of a PSK signal , playing it on a mono tape
> >player into the sound card input, to test the computer for receive
> >capability. Rather than trying to wait until one comes across on the
radio.
> > Would this be practical and where could one find a recording of PSK ?
>
>
>
>
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Date: Fri, 23 Jun 2000 21:28:40 -0500
From: fkamp <fkamp@home.com>
Subject: Re: [psk31] Encouraging
For those interested there is a PSK program that does run
under DOS but it requires using a Texas Instruments DSK 'C50
starter kit priced around $100. Since the DSK 'C50 handles
ALL the DSP processing, it frees up the computer which is
tasked only with pre-processed data transfer over a serial
port.
I mention this because it might be an option for people
interested in using realy old, non-windows, computer
hardware and software.
The program is DSPBOX by Alberto di Bene (I2PHD) and
Vittorio De Tomasi (IK2CZL). It is a DOS program. I run it
in a DOS window under Win95 and have also run it on an old
386-16 under DOS 6.2.
One of the nice things about DSPBOX is that it allows the
DSK 'C50 to run duplex. You can loop back the transmitted
audio back into the audio input to check out the system.
I'm not sure how useful that is except for testing. So far,
my DSK 'C50 has delivered the cleanest signal by far and I
have used nearly all the public domain PSK software
available.
The downside is that DSPBOX does not have a waterfall
display. It uses the circular phase display which can make
tuning difficult. Another downside is having to provide
power and interface to the DSK. The DSK likes to see a 3v
p-p input signal and delivers a 3v p-p output. That
definately requires an attenuator to the mike and may
require amplification into the DSK depending on your setup.
Lastly, the DSK 'C50 is obsolete. It may be difficult to
find one. There are newer TI DSPs out there and they may
have software support, but I only know of DSPBOX which
requires the DSK 'C50.
That may not be much help to most, but this is another way
to do PSK.
Frank Kamp
K5DKZ
Robert Lay wrote:
>
> Dear Dave,
>
> I think you will find that thd "DOS" version to which you refer is nothing
> but a Test Harness" used in a DOS environment to evaluate the NON- DSP and
> NON-sound card related issues of PSK31.
>
> Putting it another way - it ain't no PSK31 program for QSO's.
>
> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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> with a text line as follow: unsubscribe psk31 or unsubscribe psk31-digest
>
> More instructions on PSK31 Webpage: http://aintel.bi.ehu.es/psk31.html
> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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End of Psk31 Digest V1 #434
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