The FCC defines the rules for automatic operation in §97.221.
§97.221 (b) specifies a set of sub-bands within which automatic
operation using RTTY or Data is permitted.
§97.221 (c) permits automatic operation using RTTY or Data outside
those sub-bands if the station is responding to a human-ope
Hi John
It is very interesting question.
The following is my awkward idea.
Pse point out a mistake.
Remember once early RTTY with WIDE-SHIFT FSK.
There were mainly 3 SHIFT with 850,425,170Hz.
At AFSK, MARK is 2125 and SPASEs are 2295(170), 2550(425), 2975(850).
That is UP-SHIFT, SPACE is h
Rick,
I guess you are quoting me regarding the original automatic
forwarding of Winlink Classic. The very reason we moved TO Winlink
2000 is why we moved FROM Winlink Classic. That is, to take fully
automatic forwarding OFF the HF bands once there was a more
appropriate and efficient forwardin
At 08:16 PM 10/23/05, you wrote:
>Is this causing you problems of some sort or other? de Roger W6VZV
No not at all. Just wondered why all the sound card stuff
was USB and the other digital modes are LSB.
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John Becker wrote:
>Can some one tell me why the sound card digital modes use USB
>and not LSB like the other digital modes?
>
>John, WØJAB
>Louisiana, Missouri
>EM48LK
>
>
>
Is this causing you problems of some sort or other? de Roger W6VZV
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There are not that many programs that operate automatically and in the past
I think there was a "common" view by many that you could not do this in
software. Well, Rick, KN6KB proved that you can do it and do it amazingly
well. But it apparently was not an easy task and took a lot of work.
I doubt
Sure it does. Switch to USB and the st-6 to 'reverse'
and it will receive just fine. If the transmitt tones
are set to the reverse it will also transmit just fine
while in USB.
--- John Becker <[EMAIL PROTECTED]> wrote:
> The same does not hold true for those of us still
> using 1970
> equipmen
Title: Message
Hmmm I thought that was already part of the
rules. If you dont listen, and transmit and intefere, that IS against the
rules.
- Original Message -
From:
Dave
To: digitalradio@yahoogroups.com
Sent: Sunday, October 23, 2005 5:00
PM
Subject: RE: [digi
Not true. I would only be upside down if my mark and space were
reversed. I use MixW. When I transmit using USB my mark is above my
space. When you receive me my mark is above my space. When the audio
comes out of your receiver into your ST-6 TU (because you are on LSB) my
mark is below my
I can't speak for the sound card stuff. Don't use it.
But if your on the other sidband from me you will
be what's commonly called upside down.
At 03:30 PM 10/23/05, you wrote:
>So why are you having trouble using this stuff? If my mark, space and
>shift are correct it doesn't;t matter what sid
Title: Message
The
response from Tom K1KI, ARRL New England Division Director, was
"I'm guessing the FCC wouldn't want to get into
legislating listen-before-transmitting protocols - that's probably something the
ham radio community should be encouraged to work on. I've already started some
So why are you having trouble using this stuff? If my mark, space and
shift are correct it doesn't;t matter what sideband you and I are using.
73,
Mark N5RFX
At 02:53 PM 10/23/2005, you wrote:
>The same does not hold true for those of us still using 1970
>equipment like a 28KSR TTY machine and
Rick,
Thanks for that explanation. I knew there was an historic reason. I will
file your explanation away for further reference. As long as we remember
that the mark is the carrier and that space is shifted down in frequency,
we should be in good shape no matter whether we use FSK or AFSK US
No not today. He lives in Underbarrow, a
small hamlet between Windermere and Kendal in the Lake District National Park,
Cumbria.
- Original Message -
From:
John Becker
To: digitalradio@yahoogroups.com
Sent: Sunday, October 23, 2005 4:09
PM
Subject: Re:
Your proposals make perfect sense to me Dave, did
ARRL respond ?
Andy K3UK
- Original Message -
From:
Dave
Bernstein
To: digitalradio@yahoogroups.com
Sent: Sunday, October 23, 2005 3:46
PM
Subject: [digitalradio] Re: I thought
Auto Pactor was Illegal?
Thanks Andy,
Last I know Peter was over in the Bridgemary, Hardway area.
Was you able to ask him about Alan?
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But , Rick, why has something similar not been
added to other modes?
- Original Message -
From:
Rick Williams
To: digitalradio@yahoogroups.com
Sent: Sunday, October 23, 2005 2:55
PM
Subject: RE: [digitalradio] I thought
Auto Pactor was Illegal?
As
men
The same does not hold true for those of us still using 1970
equipment like a 28KSR TTY machine and a ST-6 TU.
>
>With today's technology, it is not necessary to do this and everything in
>the military and commercial HF bands is pretty much USB only. So the trend
>is to just make everything USB
Busy detection is definitely feasible. Besides the SCAMP example,
the SCS modem evidently supports busy detection, but I am aware of
no software that exploits it. Some Winlink folks were saying last
spring that they planned to use this; if they've done so, I missed
the announcement.
In reactio
Mark,
In the
"old" days you would use a CW transmitter for RTTY. Then you would pull the
signal down for the shift by having a capacitor across the VFO, thus producing
an FSK signal. The operating frequency was always the mark frequency. The
mark frequency was high and the space frequenc
As
mentioned earlier, it has already been done. The hope is that Rick, KN6KB
will eventually share the routines he developed for SCAMP with other developers
of automated software.
If you
have ever tried out SCAMP you will realize that it is even more of a watchdog
than a human operator.
I would recommend the link below , after several
years of "wondering" about ALE , the HFLINK group helped me get active. If
would be nice to have a few more ALE stations to experiment with.
Andy K3UK
- Original Message -
From:
expeditionradio
To: digitalradio@yahoogr
From the dude himself...
Andy K3UK
"You can use either upper sideband or lower
sideband when using PSK31, but there are two things to remember.
When tuning to a particular frequency, for a sked
or a net for example, the exact frequency specified for the net will be the
centre-freque
John,
It really doesn't matter which SB you use with most sound card
programs. If the mode is sensitive to polarity, then there is usually a
reverse or inverse switch. The only difference will be the dial frequency
on your rig, but the actual operating frequency will be the same whether
you
I believe it's also true that for BPSK,
the sideband doesn't make a difference, right? You can select USB or LSB and
copy either. Only diff is that the freqs look different. Correct me if I'm
wrong. I know this isn't true for most other modes including QPSK.
Kevin – K4VD
Kevin
"From the PSK31 help files
Peter, G3PLX suggests using USB on all bands. Please read the help
file section: PSK31 Operating > Sideband selection with PSK31.
This has ALL the answers to the sideband discussion"
I happen to know the 2M repeater in my homew town
that Peter monitors and it i
I'll guess..
PSK was the first widely used soundcard based
application. Almost everyone used 14070 and , if I recall correctly, it
was suggested that we use USB for that freq. Then for some reason we all
kept using USB. I think I remember this discussion back in the early days,
will
I don't like to cross post but, I think this info may be useful
to the HF DV and ALE guys on this list that may have missed it.
>Date: Wed, 19 Oct 2005 00:57:20 -
>Subject: [ARD9800] Evening AOR Digital Voice on the HFpack 40M Sunset net
>at 7.296 mhz USB
>Reply-To: [EMAIL PROTECTED]
>
>Hi
Can some one tell me why the sound card digital modes use USB
and not LSB like the other digital modes?
John, WØJAB
Louisiana, Missouri
EM48LK
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>unless the automated station has a busy channel detector that detects any
>mode in its passband and prevents TX until the frequency is clear for a
>period of time.
OK, tech guys. How difficult would it be for a soundcard based software
application to detect a signal present within ,say, 50
--- In digitalradio@yahoogroups.com, "w7psk" <[EMAIL PROTECTED]> wrote:
Two Qso's destroyed today on PSK because of an Auto Pactor on 40m at
7069.5. Its obvious its auto as it came on dead ontop of my signal.
Whats the best way to deal with them??
Scotty W7PSK
Scotty,
See: http://mywebp
Other
than making them illegal (which is doubtfall that will ever happen now), we need
automated stations that are able to detect signals in their passband. The only
example that I have seen that works well, is the busy channel detector in the
SCAMP mode, that we have tested for Winlink 2
Two Qso's destroyed today on PSK because of an Auto Pactor on 40m at
7069.5. Its obvious its auto as it came on dead ontop of my signal.
Whats the best way to deal with them??
Scotty W7PSK
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Come on down Andy. We will make a day/weekend
out of it. I have never really run in a uhf/vhf contest for real.
Just play with contacts in the past events. Getting a few 6 or 2 meter
QSOs. Havent even attempted 440, though my lil 706 has it.
Danny
- Original Message -
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