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Stefan,
''not over the long and deep QSB of course''.
Unless 'of
course' the modes was profiled for MF usage , in which
case the interleaving is long enough to ride out
the qsb ,
long interleave and low s/n , but at the
loss of speed are the only suitable modes for mf
conditions , in terms of message handling , packet like
systems can make good use of the qsb ....
good results have been obtained using fldigi
and the 'email system' where a message was 'delivered
to' a distant station , the
problem being , that each station has to be in
range of each other
ax25l Packet , where connects can be made via
other stations , would work quite nicely , im
sure this was tried , long ago , but I note multi-psk has
a 100 baud packet option , also psk
option , but that would have limited access to mf
What would the route be to you
from here some thing like ?
C dk7fk via g4wgt , g3kev
C dk7fc via g3xiz , [ some one
east coast] pa0a
73-G.
Sent: Thursday, March 14, 2013 9:50 AM
Subject: Re: LF: 630m Narrow Keyboard Mode
Eddie,
Am 13.03.2013 21:29, schrieb g3zjo:
If I am
around using GMFSK I will be on 476.100. Getting more people interested so
that there is a possibility of random QSO's, err, I will leave that to you.
OK, i will follow the thread.
It could be useful to find
a mode that allows 2 way communication in summer, when the QRN crashes make CW
operation not a pleasure. Just a thought...
Ah yes, and the FEC stuff could
help to jump over the QRN crashes, not over the long and deep QSB of
course.
73, Stefan
73
Eddie
P.S. Mal, yes missing him already.
PPS. I had my first
QRSS3 QSO today with G4AYT 167Km daytime path, not random
though.
On 13/03/2013 14:53, Stefan Schäfer wrote:
Hi
Eddie, LF/MF,
I'm a bit confused in the last days by the number of
various digimodes which have been tested. Gary started with RTTY which is
fun and allows real QSOs on 630m, apart from CW. But if each mode is done as
a short test to check its performance, then it quickly becomes boring. What
i would like to have is a mode which is used by several active amateurs, a
real QSO mode like CW. A mode that lasts longer than a day. I thought that
AMTOR-FEC could be useful but i didn't make any tests yet. However if i have
to assume that there will be 2 or 3 interested QSO partners who will be
available for a short test QSO and then QSY to GADFDSMSFASKMDKFK-4 or
whatever, then none of these modes are actually interesting for me and i
come back to CW where i can be sure to find a QSO partner without announcing
my activity before. Today, tomorrow, next week and next year :-)
What
do you suggest? :-)
73, Stefan/DK7FC
PS: And where is Mal?
:-)
Am 11.03.2013 23:52, schrieb g3zjo:
Sucess.
Just a little more signal and this would have
been a really good QSO over our path of 127Km conditions are not good
tonight, my antenna current is down.
Eddie
On 11/03/2013
21:53, g3zjo wrote:
LF
Searching for a Narrow Keyboard
QSO mode suitable for QRP on 630m. I went back to a program I used
several years ago.
Currently Testing GMFSK not to be confused
with gMFSK which is a Linux program.
GMFSK is an FSK Mode using
Varicode by JE3HHT Makoto Mori included in MMVari.not new program it is
of the usual high standard found in his software.
GMFSK has
variable width, currently I am running at 15.625Hz wide. 474.200 Dial
1900 tone frequency.
JE3HHT provides fine documentation with his
software, for some reason all the other modes covered by MMVari are well
covered but when he gets to GMFSK he says that it is beyond the
scope of the instructions. I have yet to find more details about the
mode.
This Mode
should be better than RTTY and faster MFSK for higher power stations
too.
73 Eddie
G3ZJO
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