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To : PSK31@WW.SYD.NSW.AUS.OC
Date: Thu, 17 Jun 1999 09:53:23 -0400
From: "Robert Lay" <w9dmk@crosslink.net>
Subject: Re: [psk31] Re: psk31 on VHF/UHF
.....snipppppp......
>I remember reading about this. If I remember correctly, didn't the
>system
>actually shift the repeater's carrier frequency? I wonder if anyone
>still uses the technique.
Doesn't everything shift an FM repeater's frequency? How else would it be
frequency modulated?
73 de Bob Lay, W9DMK, King George, VA
http://www.qsl.net/w9dmk
http://www.fortunecity.com/meltingpot/albania/784
------------------------------
Date: Thu, 17 Jun 1999 09:50:31 -0400
From: "Robert Lay" <w9dmk@crosslink.net>
Subject: Re: [psk31] SunClock Program with PSK
Be advised that there is a lot of software for Windows that does exactly that,
and some of it even comes from Microsoft.
An application requests an allocation of memory from the operating system and
never releases it properly. If it is doing that in any sort of a continuous
loop, then you get exactly what you are seeing.
In Windows 98 there are some system tools that can be installed from your
Windows distribution CD-ROM, if you have it, and if they aren't already
installed. One is called "System Information" and should be available on
Start->Programs menu.
From that you can launch Dr.Watson, which stays resident and allows you to "on
command" get a system status - including the resource utilization, etc.
From a Windows 95 environment, the Dr. Watson program is also availble directly,
as I remember it. In fact, it was available from somewhere for Windows 3.x
I suggest getting familiar with Dr. Watson and use it to track down whether or
not your suspected program is really the culprit. If it is, it is virtually
impossible for the problem to be corrected by any means other than its author
re-programming it to kill the bug.
Speaking of bugs, have you heard about Volkswagen's model year 2000 version of
the beatle? They're going to call it the "Y2K Bug".
73 de Bob Lay, W9DMK, King George, VA
http://www.qsl.net/w9dmk
http://www.fortunecity.com/meltingpot/albania/784
------------------------------
Date: Thu, 17 Jun 1999 11:43:26 -0300
From: py2pll@unetsul.com.br (Marcus Ramos (0946))
Subject: [psk31] Coutries Worked/Heard
Hi all ...
Yesterday added one more (41st): FG5 (Guadeloupe) and a new JA(5JGY). And
heard some USA stations working HK (Colombia), Azores and CN8. There was 5N0
on FeldHell, may be he starts PSK31 ...?? ...
73 GUD DX
Marcus (PY3CRX/PY2PLL)
http://www.unetsul.com.br/py2pll
------------------------------
Date: Thu, 17 Jun 1999 08:01:19 -0700
From: "John P. Slusser" <slusser@worldnet.att.net>
Subject: [psk31] Mix32Demo
Well, I downloaded it, unzipped it, read the manual a little, tried it
and my first impression of this "you can't save setup" demo is: BLAH! I
just love demos that aren't full featured so you can evaluate them
totally.
I <bold><italic><underline>LIKE</underline></italic></bold> PSK31 and
GNR's front end. Opinion stated.
Tell me why I oughta register and use Mix32?
de WD7F
John in Tucson
------------------------------
Date: Thu, 17 Jun 1999 08:04:16 -0700 (PDT)
From: Peter Klein <pklein@2alpha.net>
Subject: Re: [psk31] DXpeditions on PSK
On Thu, 17 Jun 1999 RS174461@aol.com wrote:
> 3) DXCC. As far as I'm aware, PSK31 is NOT a recognised mode for DXCC as
> yet. Why would DX-peditions spend thousands of dollars to go to some remote
> place, and then work a bunch of guys whose QSOs would be worthless for DXCC?
> I don't think too many big multi-mode DXpeditions would be up for that. It
> would require specific digital mode DXpeditions for now. I might be wrong,
> but I don't think there are too many of these.
Wait a minute. Are you saying that PSK31 contacts do not count for
regular, mixed-mode DXCC, or for RTTY DXCC? My impression is that there
is no *mode-specific* DXCC for PSK31. But for award/contest purposes, a
PSK31 contact counts just like an RTTY contact.
Please correct me if I'm wrong. Since the issue has been raised, we
should probably get official clarification from the ARRL.
My own opinion is that PSK31 will work for DXing and even contesting, but
it requires a special mind-set. First, tuning is critical, so things may
take longer. But you may work more people, so that may compensate.
Second, the brute-force "everybody on one frequency" method is not the
best way to go. Spreading out and using modest power will get everyone
farther.
Whether operators will adopt this mind-set is yet to be determined.
- --Peter, KD7MW
------------------------------
Date: Thu, 17 Jun 1999 10:57:02 -0500
From: "George T. Baker" <w5yr@swbell.net>
Subject: Re: [psk31] DXpeditions on PSK
Just a couple of comments, Karl:
RS174461@aol.com wrote:
> 1) DX-peditions tend to use Lap-tops for logging. Until recently Lap-tops
> VERY seldomly came fitted with 16 Bit Sound-cards. With all the other costs
> associated with DX-peditions, I guess finding another $4000 (or whatever they
> cost in the US) for a brandnew, top of the range lap-top is not exactly top
> of their priorities list.
My Micron laptop was purchased about 3 years ago when laptops were really
expensive! It was about $3K at that time, but it did include a SB16 chip
set which functions perfectly with PSK31. I would almost bet money that
any laptop purchased today - at well under $2K, BTW - will support 16-bit
audio.
>
> 2) Speed of operation. I have been told that the average QSO length would
> be too long. DX-peditions have an obligation to "get people in the log".
> Apparently PSK31 does not lend itself to this type of operation. Personally,
> from experience, I don't see that it needs to take ANY longer than a QSO with
> a DX-pedition in RTTY. Yes, I know that traditionally a PSK31 QSO consists
> of Name, QTH, Software, Computer, Rig etc, and I'm not saying there's
> anything wrong with that, but surely if a new country comes along, just
> exchanging a 599 would suffice. I don't know, what's your opinion?
I think he has a point, but the time involved comes not from the actual
exchange, but from all the ultra careful tuning that has to be done in
order to have a contact work. PSK31 is much more critical in tuning than
RTTY or CW. A good op on cw especially can work a dozen stations and
never touch the tuning dial - he will be working a variety of beatnotes
but he will be able to read them and work them as fast as he can work the
keyer (or push the buttons!) and get responses. PSK takes time for tuning
and it has to be exactly *right* - not just "close enough."
- --
72/73, George AMA 98452 R/C since 1964
Amateur Radio W5YR, in the 53rd year and it just keeps getting better!
AutoPOWER Systems, Fairview, TX (30 mi NE Dallas) Collin County
QRP-L QRP-ARCI FISTS NORCAL ZOMBIE ARS 10-X 33.2 N 96.6 W EM13RE
------------------------------
Date: Thu, 17 Jun 1999 12:41:45 -0400
From: "ROBERT EVANS" <revans@sarnoff.com>
Subject: Re: [psk31] Re: psk31 on VHF/UHF
This would work quite well. The only caveat is the fact that most NBFM
radios greatly attenuate the audio in the sub-audible region (CTCSS). Both
on RX and TX. The modification would not be significant circuit-wise,
but practical-wise (in modern compacted, surface mounted device
transceivers) it would be difficult. The up side of this is that most
receivers wouldn't know you were there, except that the repeater is keyed.
If every one that listened to a repeater used CTCSS decode squelch, then
they would be unaware. Further, if the PSK31 users had a different
CTCSS code (or better yet a PSK31 detector) then sharing of the repeater
would be made convenient. If a specific PSK31 frequency was chosen,
then a simple audio filter, envelope detector, integrator, comparator
could be used to key up the repeater for PSK31 use.
The next thought would be the question of how many PSK31 would fit
into this "sub-audible" range. The linearity of the audio system as well
as the bandwidth would certainly play a part. If, for instance, a PKS31
user over-drove the audio in his transmitter and it was further
compounded by distortion in the repeater circuits then the normal CTCSS
function would be damaged as well as PSK31 shared users. Since,
FM transmitters use limiters to avoid over FM deviation, this could be
an abrupt departure from linearity.
CU DE N2LO~>
Crawford MacKeand wrote:
> A sort of sub audio FSK was used on at least one 2 meter repeater in the
> New York City/ Northern NJ area in the 1960s. It was 45 Bd Baudot, very
> low shift FSK about 10 Hz as I remember, and developed by Bill King W2LTJ.
> It relied quite heavily on a device Bill called AZCD. The Auto Zero
> Centering Device (an op amp circuit) automatically centered the "slicer"
> input even for very small shifts, or total loss of one polarity. It also
> helped hardware HF TU's a lot. It was written up, maybe in Ham Radio Mag.)
>
> Voice users on the repeater never even knew that the RTTY QSOs were there.
> There might still be some fun to be had with more modern sub-audio QSOs.
>
> 73 de Crawford WA3ZKZ, VP8CMY, ex G4ARR jcbmck@udel.edu
> "If a man will begin with certainties, he shall end in doubts;
> but if he will be content to begin with doubts he shall
> end in certainties." Francis Bacon
>
------------------------------
Date: Thu, 17 Jun 1999 13:25:48 -0500
From: "Al Williams" <alw@al-williams.com>
Subject: [psk31] PSKGNR 1.31.4 -- Flying Horse Users Only
If you use the flying horse callbook, please download and try PSKGNR 1.31.4
which should have much improved formatting on
the Flying Horse CD.
Thanks to W1CG for loaning me the CD so I could get in and clean it up
easily.
Let me know what you think of the new format.
I don't attempt to look up some fields still. If you are interested, look
at your CDROM under \TSRDLL\WIN32\RACCD32A.TXT and look at the fields
available. Then you can tell me what you wish was there. Remember the DX
info is pretty sparse mostly crammed into field #2 free form.
If you don't use the Flying Horse CD there are no changes in this version
over 1.31.3 so you need not download this version (unless you have a version
earlier than 1.31.3 or you just want to for some inexplicable reason).
Enjoy,
Al WD5GNR
http://www.al-williams.com/wd5gnr/pskgnr.htm
------------------------------
Date: Thu, 17 Jun 1999 15:38:41 -0400
From: "Ford, Steve, WB8IMY" <sford@arrl.org>
Subject: RE: [psk31] DXpeditions on PSK
PSK31 is indeed a recognized mode for DXCC. PSK31 contacts count either
toward a "mixed" or "RTTY" DXCC (should probably be renamed "Digital").
Otherwise, all my PSK31 DX hunting (and all those envelopes and cards) won't
count for much! :-)
73 . . . Steve Ford, WB8IMY
QST Managing Editor
Personal Web site:
http://home.att.net/~wb8imy/home.htm
- -----Original Message-----
From: Peter Klein [mailto:pklein@2alpha.net]
Sent: Thursday, June 17, 1999 11:04 AM
To: psk31@aintel.bi.ehu.es
Subject: Re: [psk31] DXpeditions on PSK
On Thu, 17 Jun 1999 RS174461@aol.com wrote:
> 3) DXCC. As far as I'm aware, PSK31 is NOT a recognised mode for DXCC as
> yet. Why would DX-peditions spend thousands of dollars to go to some
remote
> place, and then work a bunch of guys whose QSOs would be worthless for
DXCC?
> I don't think too many big multi-mode DXpeditions would be up for that.
It
> would require specific digital mode DXpeditions for now. I might be
wrong,
> but I don't think there are too many of these.
Wait a minute. Are you saying that PSK31 contacts do not count for
regular, mixed-mode DXCC, or for RTTY DXCC? My impression is that there
is no *mode-specific* DXCC for PSK31. But for award/contest purposes, a
PSK31 contact counts just like an RTTY contact.
Please correct me if I'm wrong. Since the issue has been raised, we
should probably get official clarification from the ARRL.
My own opinion is that PSK31 will work for DXing and even contesting, but
it requires a special mind-set. First, tuning is critical, so things may
take longer. But you may work more people, so that may compensate.
Second, the brute-force "everybody on one frequency" method is not the
best way to go. Spreading out and using modest power will get everyone
farther.
Whether operators will adopt this mind-set is yet to be determined.
- --Peter, KD7MW
------------------------------
Date: Thu, 17 Jun 1999 15:48:32 -0400
From: Jim Sutton <jsutton@erols.com>
Subject: Re: [psk31] Re: psk31 on VHF/UHF
Robert - I think Hs is referring to the fact that the repeater incoming
frequency
is (shifted) different from the out going frequency.
There are two separate and distinct carriers within a repeater - incoming and
outgoing. The incoming audio (or what ever is being transmitted) modulates
another transmitter on a different frequency and hence you are not shifting the
frequency as you imagine but re transmitting the incoming intelligence on
another frequency by a second transmitter. This is the basis of all repeater
stations - VHF - commercial microwave, etc.
73/Jim/AC4CZ
Robert Lay wrote:
>
> .....snipppppp......
> >I remember reading about this. If I remember correctly, didn't the
> >system
> >actually shift the repeater's carrier frequency? I wonder if anyone
> >still uses the technique.
>
> Doesn't everything shift an FM repeater's frequency? How else would it be
> frequency modulated?
>
> 73 de Bob Lay, W9DMK, King George, VA
> http://www.qsl.net/w9dmk
> http://www.fortunecity.com/meltingpot/albania/784
>
------------------------------
Date: Thu, 17 Jun 1999 15:56:41 -0400
From: Jim Sutton <jsutton@erols.com>
Subject: Re: [psk31] Mix32Demo
A real disappointment -- I also downloaded - twice but could not get the info
to fit my monitor - the data was much larger than my screen and there was no
way I could see to reduce the size so I could see the whole picture.
I agree - "can't save set up" is a bummer - about as bad as one I ran the other
day - a very complicated audio spectrum analyzer - it gave you 15 minutes a day
to try and see if it is any good. In 15 minutes??
The view so far is disappointing. The program seems like a winner - but a few
rough spots must be sanded smooth.
Jim/AC4CZ
"John P. Slusser" wrote:
>
> Well, I downloaded it, unzipped it, read the manual a little, tried it and my first impression of this "you can't save setup" demo is: BLAH! I just love demos that aren't full featured so you can evaluate them totally.
>
> I LIKE PSK31 and GNR's front end. Opinion stated.
>
> Tell me why I oughta register and use Mix32?
>
> de WD7F
> John in Tucson
>
------------------------------
End of Psk31 Digest V1 #79
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