Rick,
You have done the tests and found that MT-63 is not very good at
handling weak signals compared with other modes.
It is less sensitive than others, but some of the most sensitive modes are not
necessarily the best performers when conditions deteriorate. I think it's
reasonably
Tony wrote:
The most impressive thing about MT63 is how it seems to resist heavy
static crashes. I made a few recordings with short segments of
the signal removed to simulate this type of QRN and there was little
effect on copy.
What about THOR? Thor stated to be more static-proof.
Hi Sholto.
Check Pat's page:
http://www.n0hr.com/PocketDigi/PocketDigi_Tigertronics_Interface.htm
He states that your device has 4 contact earphone jack, the added ring probably
connects to microphone input. You could either buy an Y cable or build it
yourself. Mouser stocks the 3.5mm 4 pole
Here is a new and very much improved version of the java pskmail client
The client was completely rewritten in java in a team effort by SM0RWO and
PA0R.
PSKmail adds APRS and ARQ capability to Fldigi 3.10, and uses several digital
modes depending on band conditions: PSK63, PSK125, PSK250, THOR22,
This VERY good news , thanks for all the work. I have it loaded
under Windows XP, now I just have to read and figure out where to find
a server. Should be a good project for the weekend.
Andy K3UK
On Sat, Mar 21, 2009 at 6:13 AM, Rein Couperus r...@couperus.com wrote:
Here is a new and very
I forgot to mention that the intergration with FL-Digi seems to work very well
Andy
On Sat, Mar 21, 2009 at 7:01 AM, Andy obrien k3uka...@gmail.com wrote:
This VERY good news , thanks for all the work. I have it loaded
under Windows XP, now I just have to read and figure out where to find
a
I guess I will wait for conditions favourable to connect to a server,
20M seems like my best bet this morning.
Am I correct in thinking that is the server list shows a station with
an SSID, I should put it in the link To box as DK4XI-2 ?
cK3UK:1024 DK4XI-2:24 5A7F6
When the list says No QSY
and one more question.
If I select PSK250 in jpskmail , and then execute a connect request,
FL-Digi transmits in PSK31. Do we need to set BOTH FL-Digi and
jpskmail to the same mode? I guess it makes sense but i am wondering
why there would be a mode choice in jpskmail if fldigi did all the
That is correct, linkto = DK4XI-2.
QSY means you can ask the server to go to a traffic frequency, which is
normally 500 Hz higher
than the APRS frequency. Used here in EU on 10148.5
73,
Rein PA0R
-Ursprüngliche Nachricht-
Von: Andy obrien k3uka...@gmail.com
Gesendet: 21.03.09
You can send a mode command to fldigi from the jpskmail client. - Mode menu.
Default is PSK250. Actually, in the original perl client for linux you can ask
the server to change
the mode once you are connected. This has not yet been implemented in the java
client.
Rein PA0R
You can have a look at where the servers are at
http://hermes.esrac.ele.tue.nl/maps/pskmailers.php
The blue blips are the servers.
Rein PA0R
I guess I will wait for conditions favourable to connect to a server,
20M seems like my best bet this morning.
--
http://pa0r.blogspirit.com
Also the redundancy of the FEC treatment in MT-63 allows it to give 100%
accuracy with 25% loss of data.
In actual use, Olivia will do better under worse conditions at a large
loss of speed.
Contestia attempts to bridge the gap, but MT-63 gives the highest
accurate through put at the highest
MARS has a different situation than the ham bands since you have a
dedicated phone communications bandwidth channel. And from what I hear
operators can use phone and data simultaneously with MT-63. We can not
do that on the ham bands below VHF here in the U.S.
I normally try to keep the modes
Cortland,
We also use it in Region 4, but mostly 1K long interleave.
We have used 2k under good band conditions, and the speed is very
impressive.
We are also experimenting with the text transmission capabilities of
Easypal.
David
KD4NUE
-Original Message-
From:
MT63 was I think the first really accessible I can't see it mode that could
deliver printable copy.
Our default *slow* digital mode is Olivia 32 bit 1K, but it is interesting that
16 bit is preferred by the cognoscenti.
For relatively short messages, speed is of less concern and Olivia
I have not managed a connect yet, but did find signs of life using PSK250 on
10146 (centre freq)
IS0(RB-3:72 Pskmail_Server_0.8.1-10148KHz-Sardinia (Fldigi 3.10 baYIn
400uWB5CON:72 Pskmail v.0.8
00cC56DL:1024 PI4TUE:272 00uDK4XI-0:72 INTERMAR PSKAPe
Seems that the FL-Digi
Looks like I was heard...but PACTOR QRM zappled me
RX (2009-03-21 21:02Z): a - iS r eTtaee h ae agSOH00cK3UK:1024
DL9YCS-3:24 57EC1EOT or et va F t e 9e o letu SOH00cK3UK:1024 wb5con:24
51F55EOT, pmeSOH00cK3UK:1024 wb5con:24 51F55EOT
RX (2009-03-21 21:03Z): eaeeXEoea oee e fs a i a e oe eV g
Jaak,
What about THOR? Thor stated to be more static-proof.
It depends which THOR mode is used. It seems THOR-22 is the best of the bunch
for static crash resistance. I've done a few static crash tests by generating
noise at regular intervals; the noise obliterates the signal in short bursts.
Same problem here, AFC vy restless..
-Tommi OH7JJT-
Andrew O'Brien kirjoitti:
Seems that the FL-Digi waterfall pointer really jumps around at
PSK250, AFC seems to catch it though.
SSame
Tommi,
I tightened up the AFC in FL-DIGI , that helped .
CONFIGURE
SOUNDCARD
MODEMS
PSK
then set the range. I went with 100 Hz.
Andy K3UK
--- In digitalradio@yahoogroups.com, Tommi Holopainen oh7...@... wrote:
Same problem here, AFC vy restless..
-Tommi OH7JJT-
Andrew O'Brien
What should be the set frequency? If the listed frequency of the server
is 10.148, does that mean the center frequency? Therefore, if you have
the center frequency set at 1500 Hz audio, you would put the rig at
10.146.5 USB dial frequency?
73,
Rick, KV9U
Andrew O'Brien wrote:
Looks like I
Tony,
Static crash resistance is not the only parameter to consider. The problem is
that you can have static and weak signals at the same time. MT63-1000 has a -5
dB minimum S/N, but MFSK16 has a -13.5 dB minimum S/N, so the static tests you
made must be at signal levels high enough that
Tony,
Further complicating the static crash test conclusions is the effect of the
static on the receiver AGC. If a long AGC constant is being used, the static
crash is going to desensitize the receiver for as long as the AGC holds the
receiver sensitivity above the decoding threshold. In such
--- In digitalradio@yahoogroups.com, Rick W mrf...@... wrote:
What should be the set frequency? If the listed frequency of the server
is 10.148, does that mean the center frequency? Therefore, if you have
the center frequency set at 1500 Hz audio, you would put the rig at
10.146.5 USB
That's right, Andy. PSKmail uses fldigi and at Rein's request, the sweet spot
default in fldigi is 1000 Hz.
73, Skip KH6TY
NBEMS Development Team
- Original Message -
From: Andrew O'Brien
To: digitalradio@yahoogroups.com
Sent: Saturday, March 21, 2009 7:41 PM
Subject:
Of course, about 1 minute after I sent the message, I discovered the
information on the center frequency and it is as I had hoped.
But ... Wow! Just tried out some of the PSKmail features and find it
very interesting. Once I realized that the Ping command will bring up
any of the servers that
How is gmail set up for pskmail ?
Andy K3UK
Rick wrote:
It was very difficult to actually use the frequency due to many other
stations transmitting on top of the server and my signals.
What! You were on the frequency first and someone transmitted over top of you?
Don't they always listen first?
;-)
Therefore, we must be very grateful
My preference would be to follow the band plan. Assuming I understand
things correctly, on 30 meters it is intended that modes up to 2700 Hz
remain in the 10.140 - 10.150 sub band and all narrow digimodes (500 Hz
or less) in the 10.130 - 10.140, with 10.100 - 10.130 for CW. There is
no comment
By the way is PocketDigi still being developed? Just hoped there would
be an update someday soon :)
Hi Sholto.
I am doing some improvements, but very slowly. Actually I have the DXCC
database and calculation of bearing/distance ready for about a year already, I
just waited to get more new
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