Andy
Tony, what is the center frequency in Multipsk for packet?
If you're VFO is parked on 14105.5 LSB then center the Multipsk cursor on
2200Hz. You might have to tweak it a bit, but that's the general location of
where the packet signals are.
Also remember to click (PACEKT + APRS) mode and
Thanks Tony, I am using Multipsk which works well for 300 baud packet. I'll
skip Winpack this time, I used to use it many years ago.
Andy K3UK
On Wed, Oct 28, 2009 at 4:06 AM, Tony d...@optonline.net wrote:
[Attachment(s) #1249a2edf42c3387_TopText from Tony included below]
Andy
Tony,
I'm glad there isn't any finite bandwidth limit
for HF digital data communications in USA's FCC rules.
(Other than the whole subband)
This leaves open the potential for some wonderful
new and different data modes to be developed in the
near future. Modes that have the potential to send a
Well said, well done, and well thought out - Thank You!
Ham's have been running ALE for a long time (at least a decade for me, boy
does time fly!), and I am not aware of anyone running ALE who has ever
received a Notice from the FCC. Our early evaluation work with ALE started
out with a
That is exactly the question. The next person may say that 9.6 is too slow for
him. We refer back to the speed limit on road, and knowing human nature.
Danny Douglas
N7DC
ex WN5QMX ET2US WA5UKR ET3USA
SV0WPP VS6DD N7DC/YV5 G5CTB
All 2 years or more (except Novice)
short stints at:
Want and should must yield to shall and will; the Rules tell us how fast we
may go in different parts of our authorized spectrum.
Cortland
KA5S
[Original Message]
From: obrienaj k3uka...@gmail.com
To: digitalradio@yahoogroups.com
Date: 10/27/2009 10:02:08 PM
Subject: [digitalradio]
From what I understand, we do not have an actual bandwidth limit on HF, but we
do have a practical one, based upon PART97 prohibitions against harmful
interference and of course the 300 baud limit.
The wider HF digital modes 'get around' the 300 baud limit by transmitting
multiple streams,
Interesting analogy. I guess we'd never have invented jet airplanes, then, if
no one needs to travel faster than XX MPH. If getting data disseminated in
an emergency has lower priority than an RTTY contest, then so be it.
--
Dave Sparks
AF6AS
- Original Message -
From: DANNY
Back to the anology. Auto (ground based) speed have nothing to do with
aircraft speeds. Aircraft were developed off-road, and did not interfere
with auto carriageways at all. To this day, new records are being made by
aircraft, away from other aircraft users. Land speed records are normally
The problem with worrying about people interfering with this hobby, you have
to narrowly define this hobby.
OK, staying with your analogy, we'd have to set surface street speed limits in
concrete based on how fast a Ford Model T could have been safely driven,
leading to a national maximum
Dave:
The hobby is defined in the first section of PART97. No mystery there. It is
quite plain, so there is very little wriggle room there for interpretation.
Double sideband is allowed to use 6 kHz of spectrum - and so are digital modes.
But if the operator of either one interferes with an
The model T had limits of around 15-25 mph, for a couple of reasons. It would
shake you, and it, to death if you got it too fast on the roads built for
wagons. They hardened the road surface, and made them wider, thus allowing
future autos to go faster, and safer. Just like in Germany, and
There is no bandwidth limit in the RTTY/data segments but there is a limit of
no wider than a communications-quality DSB phone signal using the same
modulation type in the phone/image segments from 160 to 1.25 meters. This is
interpreted as anything between 6 and 10 kHz by U.S. AM users but the
Moderator since there are only a couple of members carrying on this lengthy
dialogue, could I respectfully suggest they take thisprivate,
so as to not QRM everyone's mailbox?
Thanks
John
VE5MU
From: digitalradio@yahoogroups.com [mailto:digitalra...@yahoogroups.com] On
Behalf Of John
MODERATOR: Although I have not contributed to this thread, I have indeed been
following it with some interest. I thought that was the whole reason for this
forum If I am in error to only sit back and learn without posting, please
let me know . along with numerous others
Thanks
73
Hello all,
I am trying to set up my computer to key my radio rather than the el cheapo way
of using vox. I have built a circuit to use the 25 pin lpt jack, but I do not
know how to assign this jack as a com port. Most of the digital programs I use
only specify com ports, not lpt. I do have a 15
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