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PA2AGA > HDDIG 06.07.00 02:09l 246 Lines 7110 Bytes #-9409 (0) @ EU
BID : HD_2000_180F
Read: GUEST
Subj: HamDigitalDigest 2000/180F
Path: DB0AAB<DB0SL<DB0RGB<DB0MRW<DB0ERF<DB0BRI<DB0SM<PI8DAZ<PI8GCB<PI8HGL
Sent: 000705/2115Z @:PI8HGL.#ZH1.NLD.EU #:58938 [Den Haag] FBB $:HD_2000_180F
From: PA2AGA@PI8HGL.#ZH1.NLD.EU
To : HDDIG@EU
Date: Wed, 05 Jul 00 21:28:16 MET
Message-Id: <hd_2000_180F>
From: pa2aga@pe1mvx.ampr.org
To: hd_broadcast@pa2aga.ampr.org
X-BBS-Msg-Type: B
PSK or FSK instead. The fact is that Morse code is used with OOK
99.999% of the time.
You say CW is digital because it is on-off keyed. We can represent
any signal in a digital fashion, though -- that's simply called sampling.
The EPROM repeater ID example just demonstrates that CW can be sampled
like any other analogue signal.
Hamish
--
Hamish Moffatt VK3SB <hamish@debian.org> <hamish@cloud.net.au>
------------------------------
Date: Wed, 05 Jul 2000 09:52:28 GMT
From: hamish@cloud.net.au (Hamish Moffatt VK3SB)
Subject: CW versus hi speed digital etc.
CAM <W6RCA@mindspring.com> wrote:
> Hamish Moffatt VK3SB wrote:
>> I don't see any advantage in OOK.
> Do you see any advantage to FSK? For the same *average* power
> output level, OOK and FSK have the same S/N performance.
Doesn't the same average power require significantly higher peak power
in the case of CW though?
Hamish
--
Hamish Moffatt VK3SB <hamish@debian.org> <hamish@cloud.net.au>
------------------------------
Date: Wed, 05 Jul 2000 09:53:14 GMT
From: hamish@cloud.net.au (Hamish Moffatt VK3SB)
Subject: CW versus hi speed digital etc.
Peter O. Brackett <ab4bc@ix.netcom.com> wrote:
> My point is that CW is a digital mode, and danged efficient at that!
> Why is it that so-many refuse to accept those facts?
Why is it so important to you that we do?
> CW has become far to much of an "emotional" issue for many, they have lost
> their sense of perspective.
I respectfully submit that your comment applies mostly to you!
Cheers
Hamish
--
Hamish Moffatt VK3SB <hamish@debian.org> <hamish@cloud.net.au>
------------------------------
Date: Tue, 4 Jul 2000 16:52:06 -0400
From: "Rob" <Pse@NoEmail.Com>
Subject: Digipan Software for PSK-31
Mike,
You may also want to try PSKHell which is a new designer Hell mode. In my
view, PSKHell is a MUCH better mode than PSK31 at copying VERY weak DX
signals since your brain makes the final decision at which character was
actually sent. (With PSKHell, characters are transmitted as IMAGES).
PSKHell also appears to cope MUCH better than PSK31 with multipath fading
and polar flutter.
The most popular Hell software was written by IZ8BLY for Windows 95/98 and a
sound card. It is FREE!
For information on Hell and the exciting new PSKHell mode, see
http://www.qsl.net/zl1bpu You will find links to the software, etc
73's
Rob
"Mark Flanagan" <markf@cshore.com> wrote in message
news:slpme3r1jev24@corp.supernews.com...
> I have just hooked up my rig to receive PSK-31. I downloaded a couple
> programs but after Steve (WB8IMY) Ford's review of Digipan in QST I went
> with that. I really don't have it all figured out yet and also have yet
to
> get the wiring right for sending. I would like to hear your comments on
> which program you find best for which PSK-31 application. My uses will be
> strictly DX, ragchewing and logging.
>
> Also, what seems to be the best method for keying, using the computer's
> serial port or the rig's vox?
>
> --
> Mark Flanagan, K1MKF
> k1mkf@qsl.net
> http://www.qsl.net/k1mkf/
>
>
------------------------------
Date: Tue, 4 Jul 2000 16:48:43 -0400
From: "Rob" <Pse@NoEmail.Com>
Subject: how does PSK31 really work?
Yes, PSK31 really works. PSK31 does use DSP!!
For most PSK31 programs, the sound card acts as a simple Analogue to digital
converter and vice versa. There are a few sound cards that actually do some
Digital Signal Processing (or DSP). But most PSK31 programs do not use the
DSP capabilities in the sound card since most programs were written assuming
that your sound card does NOT have any DSP. (That is a good assumption
these days)
Most of the DSP is done by the main CPU in your computer. But you will need
a fairly fast computer for most PSK31 sound card programs. The old 386 and
most 486 computers will not work.
Most sound card programs for PSK31, SSTV etc assume that your computer is a
Pentium 166 Mhz or better.
(If you plan to run another new mode called MT63 in its 2 Khz mode, you will
likely need a 500 Mhz computer or better!)
You may also want to try PSKHell which is a new designer Hell mode. In my
view, PSKHell is a MUCH better mode than PSK31 at copying VERY weak DX
signals since your brain makes the final decision at which character was
actually sent. (With PSKHell, characters are transmitted as IMAGES).
The most popular Hell software was written by IZ8BLY for Windows 95/98 and a
sound card. It is FREE!
For information on Hell and the exciting new PSKHell mode, see
http://www.qsl.net/zl1bpu
73's
Rob
"Charles T. Young" <ctyoung@mtu.edu> wrote in message
news:8jjjn7$6i4$1@campus3.mtu.edu...
> I would like to know a couple of things:
>
> How does PSK31 really work? Is it an ascii character set? How
> is the modulation accomplished?
>
> I have heard that DSP functions are present in a sound card.
> Can someone tell me some more about that? Besides knowing how it
> is used in PSK 31, I have another job for it. I want to do signal
> averaging in the time domain. Another thing I would like to be able
> to do is synchronous detection.
>
> Anybody out there have any ideas on these questions? Could you please
> send a reply to my email address? I look at that a lot more than
> these newsgroups.
>
> Thanks
>
> Chuck KF8TI
> ctyoung@mtu.edu
>
>
------------------------------
Date: 04 Jul 2000 14:46:36 GMT
From: lxmustangking@aol.com (LX Mustang King)
Subject: I NEED TO KNOW HOW TO
I NEED TO KNOW HOW TO FINED THE ROGER BEEP NUMBERS IN A SUPERSTAR3900
THANK YOU
GARY KB2ZLM
------------------------------
Date: Tue, 04 Jul 2000 15:54:34 -0500
From: Bill W <n0wze@swbell.net>
Subject: I NEED TO KNOW HOW TO
couldn't find KB2ZLM @ QRZ.....Is this a new call???
Bill
LX Mustang King wrote:
> I NEED TO KNOW HOW TO FINED THE ROGER BEEP NUMBERS IN A SUPERSTAR3900
>
> THANK YOU
>
> GARY KB2ZLM
------------------------------
Date: Wed, 05 Jul 2000 07:32:09 GMT
From: Bob Winingham <kc5ejk@onramp.net>
Subject: TM-D700A and Tripmate?
Randy Thomson wrote:
> Is anyone using the Trimpmate as a GPS with the Kenwood TM-D700A?
>
> I tried today without any success. I terminated the Kenwood GPS cable with a
> DB-9 male connector with Pins 2&3 jumpered to loop the ASTRA signal back,
> then connected the red wire to pins 2-3 and the shield to pin 5. Set the
> D700 to NMEA GPS mode. No joy. didn't get any POS input on the display, and
> no Auto APRS output.
>
> Need some help, or a reason I have to go get a GPS III+.
>
> Thanks,
> Randy - K5MW
the tripmate needs a control line made high to turn on
check the sigs for a wiring diagram.
The red wire and ground will wiggle a voltmeter when on
73
------------------------------
End of Ham-Digital Digest V2000 #180
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