Hello Rick,
All the FEC appears to be roughly the same Viterbi encoding/decoding in
Multipsk but perhaps there are some differences?
No the Viterbi encoding of QPSK31 is smaller so a bit less powerful that the
one used for MFSK16/MFSK8/PSK63F/PSK220F, this group of modes using the same
Viterbi
Expect more Olivia in a few days, possibly some Domino modes next week.
Why - because I'll be letting my test team lose on a new DM780 kit which
already supports Throb and MFSK.
Simon Brown, HB9DRV
- Original Message -
From: Andrew O'Brien [EMAIL PROTECTED]
What happened? It
I think that PSK and RTTY are
still number 1 and 2, JT65A appears to be number 3 followed by MFSK16
and Hell.
I pretty much agree, though I've personally seen waaay fewer Hell QSOs
than Olivia. I think Hell is fun, and I'd like to work it more.
I wonder if the lack of Olivia QSOs is due to
Andy,
To me, it is a matter of being fashionable. No matter whatever
happens, Olivia is a ROBUST mode,
and most likely, the most robust conversational mode I know. The most
robust is JT65A, but is hardly
conversational, unless you do what you suggest on a previous mail using
short phrases.
I think many are spoilt by PSK because the waterfall shows many QSO's
whereas for Olivia etc. one has to hunt and then figure out what mode one
has found.
A suggestion is to call CQ using a video id supported in fldigi and now
DM780 (guess where I stole the code from).
Another idea is for
Tagging any CQ digimode transmission with a visual CQ at the end (even
without a mode ID) will also increase responses. You can use the same
frequency-domain font code from fldigi, as it is 2 chars wide at a
minimum.
73,
Leigh/WA5ZNU
On Mon, 10 Sep 2007 9:57 am, Simon Brown wrote:
I think many
Andrew O'Brien wrote:
What happened? It seemed that Olivia was poised to become the third
most popular digital data mode (after PSK and RTTY). Now OLivia and
also DominoEX are way down in use. I think that PSK and RTTY are
still number 1 and 2, JT65A appears to be number 3 followed by
Called CQ tonight at 22:44Z on 14076.5, using Olivia 500/16.
Andy, G8RZA answered me on my first call.
Luck must be with me Now if I can just get 3B7C :-)
de Peter K1PGV
From my perspective, perhaps some of the reasons are:
- Some digital programs only support a few modes, but typically they are
all going to support PSK31 and RTTY
- As new modes are developed, they are invariably going to be compared
to the existing leaders and need to have some compelling
Rick, a big plus to me is FEC, I do not see that you mentioned that in
your comparisons. to me, that is a major deficiency in an otherwise
interesting report. could you supplement??
thanks
chas K5DAM
Rick wrote:
From my perspective, perhaps some of the reasons are:
- Some digital
Admittedly, my comments had to be very brief since there are even more
modes and submodes. I personally find FEC to be very helpful. Some
modes, such as MFSK16 and QPSK31 include Viterbi coding as well as
Multipsk's PSK63F and PSK220F
In fact, with some testing with a nearby ham (NVIS on
Simon Brown wrote:
Expect more Olivia in a few days, possibly some Domino modes next week.
Why - because I'll be letting my test team lose on a new DM780 kit which
already supports Throb and MFSK.
Just had my 1st MFSK-16 QSO uning Simons' DM780 multi-mode digital
program and I have a
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