nesday, February 01, 2006 6:59
AM
Subject: Re: [digitalradio] Re: Digital
voice on HF
Howard,Your clear implication was that the
majority of hams are resistant to new technologies. The facts do not
support your contention if you look long term at how things have evolved.
While
Howard,
Your clear implication was that the majority of hams are resistant to
new technologies. The facts do not support your contention if you look
long term at how things have evolved. While there were a few people who
poked fun at the audio quality of SSB, most of us were very interested
Jim,
I strongly belive that *ANY* mode that does not
require a $300 to $500 TNC or other hardware will
be eaten up by the masses like PSK has.
Till a sound card program came out for digital voice
do you think this may be the reason not to many
was using the DV mode? Keeping in mind that 3 years
I
AOR ARD9800 digital voice modem. (feeding the FT-840)
Thanks! Will have to educate myself re. the AOR device.
OK, I looked over the info (below). This is a niche mode
device unless the price drops at least 50%, probably more,
and becomes common in Ham stations (fixed or mobile).
The
uot;
- Original Message -
From:
jgorman01
To: digitalradio@yahoogroups.com
Sent: Tuesday, January 31, 2006 7:04
AM
Subject: [digitalradio] Re: Digital voice
on HF
Your platitudes and generalities just don't explain why or
how yourconclusions are approp
John,
Even with the current sound card digital voice mode available through
WinDRM, are there many trying this out? I have not found any with casual
monitoring. I have copied dozens and dozens of digital pictures but the
general view (as discussed on the channel in SSB) was that the sound
TO ARRL/QST:
As we look ahead to new technologies and reconsider
the much debated ARRL proposals to the FCC we may
learn much from our past.
On one Internet list someone wrote:
In reality we need to experiment with these new
technologies ... and with experimentation just like
with SSB
: Tuesday, January 31, 2006 7:04 AM
Subject: [digitalradio] Re: Digital voice on HF
Your platitudes and generalities just don't explain why or how
your
conclusions are appropriate. For example, common run of the mill
tranceivers can handle multiple PSK streams within a 3 kHz
On Tuesday 31 January 2006 13:36, Dr. Howard S. White wrote:
I did not call the majority stupid - you did... I said that the majority
usually has to be dragged kicking and screaming to embrace the new
technologies
ROFL!!
So if they aren't stupid then what are they? Just stubborn? Not as
You bet, if a sound card program that did a quality job was available
it would take off like gang busters! Minimal costs would allow
everyone access!
The real problem is the term quality. DV has to be compared to SSB
both in terms of Signal to Noise performance and bandwidth for a given
Ok, I never said that you called hams stupid. I said:
Your other comments make it appear that you believe the
majority of hams are simply stupid because they won't
throw away existing equipment to do the things you
advocate.
But don't imply the 'majority' is simply
At 07:53 PM 1/31/06, Danny Douglas wrote:
I keep waiting for someone to come out with the program for my computers
sound card, which lets me do DV...
It is no different than SSTV. When it first came out, it was pretty much
one company, with their equipment for sale that led the way.
DV is a
""Ham Antennas Save Lives - Katrina, 2003 San Diego Fires,
911"
- Original Message -
From:
Tim Gorman
To: digitalradio@yahoogroups.com
Sent: Tuesday, January 31, 2006 4:23
PM
Subject: Re: [digitalradio] Re: Digital
voice on HF
On Tuesday 31 January 2006
You might let the folks know what the RF bandwidth is of that cell
phone channel that allows 20 conversations to share it. It will
probably be tough to get 20 phone conversations at once on 80/75
meters let alone the other bands.
The major problem with this on HF is that cell phones don't talk
OHHH that is what has been QRMing the SSTV up there?
- Original Message -
From: John Becker [EMAIL PROTECTED]
To: digitalradio@yahoogroups.com
Sent: Monday, January 30, 2006 7:04 PM
Subject: Re: [digitalradio] Re: Digital voice on HF
I got to laugh at some of the post on this subject
Can you describe the details of your mobile setup
a little more, please?
I have worked many mobile from the pick up with he set up
that I have installed. ( you can see photo at )
http://www.rfelectronics.com/digital-ssb/fellow-users/fellow-users-pics/w0jab/w0jab-stn.htm
--
Such as?
At 07:35 PM 1/30/06, you wrote:
Can you describe the details of your mobile setup
a little more, please?
Need a Digital mode QSO? Connect to Telnet://cluster.dynalias.org
Other areas of interest:
The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/
DigiPol:
Oh, sorry ... ;-)
I couldn't read the labels on the equipment and
wondered what was what and how they worked together.
Also wondered which modes you ran and if you also had
a laptop tied in.
I love the idea of a 160M - 5.6GHz mobile/portable
system that is truely all-mode (getting there
Sure no problem.
Top to bottom from the photo is
AOR ARD9800 digital voice modem. (feeding the FT-840)
Vertex VX3200 VHF rig programmed with police, fire and EMS
as well as some ham 2M frequency
the big unit under that is a Yaesu FT-840 HF rig.
last is a 24Ghz radar unit.
Any questions, just ask.
Thanks! Will have to educate myself re. the AOR device.
doc
Sure no problem.
Top to bottom from the photo is
AOR ARD9800 digital voice modem. (feeding the FT-840)
Vertex VX3200 VHF rig programmed with police, fire and EMS
as well as some ham 2M frequency
the big unit under that is a Yaesu
What kind of RF bandwidth would the 3 Kbs require?
Jim
WA0LYK
--- In digitalradio@yahoogroups.com, Arthur J. Lekstutis
[EMAIL PROTECTED] wrote:
There are voice encoding schemes that require much less. I've
experimented with this codec (for example), and found it quite good
even
at 3k bits
That depends entirely on the modulation method. At 8 bits per symbol,
that could be as low as 375hz. Eight bits per symbol is very sensitive
to noise though, and probably isn't interesting to this group. PSK31
sends one bit per Hz bandwidth and is much more robust on HF, and is
probably a
wonder how readily this technology would adapt to HF? Is there
any software out there to experiment with?
- Original Message -
From: kd4e
To: digitalradio@yahoogroups.com
Sent: Saturday, January 28, 2006 10:33 AM
Subject: Re: [digitalradio] Digital voice on HF
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