I use a CHEAP usb sound card adaptor ( 8 EUROS) on one of my old
Dell laptops which has no soundcard sucessfully for pskmail/puppy linux.
Rein PA0R
I would be interested to know if Linux even supports these cheap USB sound
devices? I did run Linux in the shack for a while and unfortunately
Thats the OTH radar on Cyprus.
Rein PA0R
Hi.
Listening on 30 meter tonight, I noticed signals as in here:
http://www.nitehawk.com/rasmit/ros/websdr1.jpg
http://www.nitehawk.com/rasmit/ros/websdr3.jpg (1)
see at 10.120 KHz and between 10.110 and 10.114 KHz
These type of signals are also often
Not an issue for pskmail arq, the timing supports VOX.
Rein PA0R
As a matter of interest, are there any issues with using the SignalLink and
some of the faster modes? I understand it is a VOX controlled device. Would
you experience problems with it cutting off the start of the packet or
Not an issue for pskmail arq, the timing supports VOX.
Rein PA0R
As a matter of interest, are there any issues with using the SignalLink and
some of the faster modes? I understand it is a VOX controlled device. Would
you experience problems with it cutting off the start of the packet or
The idea is not new.
Pskmail has all this capability built in natively.
Rein PA0R
Andy all,
If you establish a connection keyboard to keyboard , and do not wish to tie
up the frequency, then you could QSY and pick a different mode
Well of course that's the beauty of packet, it's a time and
Thank you for identifying the station for me:
2010/05/06 08:08 [ON0FS] 10145.5 PACTOR II/III Public JO10ST 1.1.8.1
Current
JO10ST is the right distance for an S7 signal, and he should be able to hear me
with the same strength.
Pactor II/III is illegal in Belgium on 10.145
I will
Dear clueless, anonymous winlink user,
thank you for jamming my qso for the 5th time this morning. Your signal was S8,
so you must have heard my qso. You just chose not to listen, and switched on
your super pactor box and started transmitting right on top of me.
I hope you are not typical for
Sorry, must be region 1.
My licence states that 500 Hz is max. bandwidth on 10.1 MHz band.
The jammer was clearly in EU :)
Rein PA0R
--
http://pa0r.blogspirit.com
-Ursprüngliche Nachricht-
Von: Andy obrien
Gesendet: May 5, 2010 12:08:58 PM
An: digitalradio@yahoogroups.com
Betreff:
On Sat, 17 Apr 2010 10:37:31 -0700, Brian Lloyd
said:
(I forgot to reply to all.)
(I removed one level of characters below)
On Sat, Apr 17, 2010 at 9:49 AM, Brian Lloyd
wrote:
[snip]
It is really Really *REALLY* important to understand what is going on with
these protocols in the
I know you've said that pskmail collects data to decide which modes to
use. But other than switching modes, and perhaps logging that data
locally, it's not telling anyone anything :-) If it could collect the
S/N, loss % etc. for a period of time and set of modes, and make it
available, that
I agree completely with John here, and I can add that ANY psk mode is
unsuitable for EME because of
the phase instability of the path. This is also why coherent CW does not work
for EME.
Rein PA0R
Hi Mike,
Psk125r (and the other r psk modes for that matter) are simply a standard
bpsk mode
For ARQ there is an additional criterion, viz. the value to look for is the
thin border
line between 95% and 100% copy. 95% copy is generally not enough for efficient
ARQ operation.
That is why pskmail does not use S/N levels as the only parameter for switching
modes,
additionally we use block
I have done several tests with DA5UWG on 80m, and the 200 km path still shows
lots of multipath.
Both antennas are low (mine is a full wave 80m loop at 10m, DA5UWG has a dipole
at 12m).
Sometimes the mode goes up to PSK500 for a few frames, but it always switches
back to PSK500R, PSK250R or
Spectrum efficiency must be measured in time necessary to get the info across,
length of info transferred, and bandwidth.
((characters/second)/ bandwidth) or characters/(seconds * bandwidth).
The bandwidth includes a certain guard band(minimum distance between 2
different
signals), which for
Hi Andy,
well, I don't agree... as soon as you talk efficiency, you have to define what
that means.
For me bandwidth efficiency is 3-dimensional, it defines how much information
can be
transferred within a certain time span, within a certain bandwidth.
JT65A works with 65 frequencies, which
We have been using PSK63 for APRS inside PSKmail from 2003 to 2005,
and we have dropped it. Reason was the long duration of the frames, which made
them
extremely vulnarable to qrm, qrn and other goodies.
We are now using PSK250 and PSK500R with a lot more success, also the pskmail
protocol has
The PSkmail servers only use CALL de CALL when confirming messages or user
beaons...
If you have captured PSK250 then it will probably have been US servers, or
Intermar maritime
servers on 10148.0 (center freq) (DK4XI-30), as on 10147.0 we use PSK500R as
default.
As soon as a connection is
Would be interesting if you could scan 10147.0 and 18105.0. there is a lot if
RSID'ing there from pskmail stations.
Rein PA0R
and today's results...nothing on 12M
22:26 PJ2MI PSK31 18101701
21:54 G3WXC PSK31 10140894
21:54 PA0DY PSK31 10141361
21:49 N7UF PSK31 18102092
21:45 ke7hty PSK31
You won't get far with PSK500, as most US servers
listen on PSK250 as default.
You could try the pskmail mailing lists where the server sysops
hang out..: http://www.freelists.org/archive/pskmail
You may end up organizing your own server that is how we did it in
Europe...
For
It depends, if the server has RxID on the mode does not
have to be specific, unless the RSID twiddle is too weak for the
server to react. Also think about using a slower mode until you
are connected... I often use MFSK16 to connect, with PSK500 on the
download link (PSK250 in US). MFSK16 is a
java runs even on windoze
the server needs a proper OS. :)
Rein PA0R
windoze ?? Is it a linux clone ?
la5vna S
http://www.pskmail.com
You probably hear DK4XI-80. The mfsk is RSID. You can see what happens
when you use Fldigi.
73,
Rein PA0R
Big data signal on 3.588 , some form of data signal .. 200 /300 hz wide ..
2 / 3 second burst , but with a odd short narrow mfsk type of short
pulse
What I don't understand is why NOBODY uses the pskmail arq chat mode, which
adds
an ARQ layer to modes like PSK250R, THOR22 or MFSK32.
Why accept 5% error when you can have it 100% error free? Are you afraid your
typing errors get to the other end undamaged?
Rein PA0R
MFSK16 always seems
The worst case and I see this once, transmission is not
possible in BPSK (or only at very high speeds as 125 bauds or more).
Why not bite the bullet and use PSK125R and pskmail client-to-client arq.
It adds an interleaver, is less susceptible to doppler effects
and adds full duplex arq at
Windoze can do it... we use N1MM in the contest with 45 wpm direct keying,
without problems on fast machines. Of course cwdaemon for linux is even
better...
Rein PA0R
Hello,
Keying directly gives possibility to put a true keyer in parallel to the
computerized keying, this to be able to
Russell,
As soon as fldigi-3.13 is released i will make a new puppy iso...
Rein PA0R
Thanks Alen, I might do the same thing, I;m also looking how ot
update programs within puppy linux, it would be smaller than a CD.
Thanks Russell NC5O
--
http://pa0r.blogspirit.com
From our mobile phone, we can instantly call a friend
on their mobile phone in a distant part of the world,
and it will ring... Can you do the same thing with
your ham radio?
You will find this function in pskmail... Just link passively to any pskmail
server
on HF, and send an IM via
Alternatively you can use a packet BBS through pskmail.
A lot of packet BBS'es can be reached via the IGATE network.
Using the ~TELNET capability of pskmail you can connect to
the IGATE network via HF using e.g. THOR22, MFSK16 or PSK500...
Rein PA0R
Thanks for the reminder Tony. How do we
I am testing PSK500 on HF at the moment. It fits nicely in a 500 Hz filter, and
is
lightning fast on a clean link...
I can see it used only for arq message transfer, with automatic fallback to
slower speeds and
bandwidth...
Rein PA0R
-Ursprüngliche Nachricht-
Von: obrienaj
, QPSK500 and QPSK1000?
Are these modes on Fldigi or DM780? If so, there were no demand for these
modes, so no RS ID numbers given. It can't be given RS ID numbers if the
modes don't exist in any of the softs able to decode RS ID.
73
Patrick
- Original Message -
From: Rein
Actually, to send such a short mail it is not even necessary to connect.
Just type 'em...@address texttextetxtmessage' and hit the ENTER key...
73,
Rein PA0R
-Ursprüngliche Nachricht-
Von: obrienaj k3uka...@gmail.com
Gesendet: 23.10.09 06:20:37
An: digitalradio@yahoogroups.com
On a VHF repeater you could use BPSK500 or BPSK1000, I have just sent the
patches for fldigi...
I am testing those modes now on RF with pskmail, and the speed is INCREDIBLE...
73,
Rein PA0R
-Ursprüngliche Nachricht-
Von: T.O.M.Bent lwdeh...@verizon.net
Gesendet: 23.10.09 13:32:04
There is a new CD image, now including fldigi-3.13, which features
background processing for RSIDrx.
The image you need for the server is pskmail_server-0.9.22b.iso.
It is available from
http://sharon.esrac.ele.tue.nl/pub/linux/ham/pskmail/liveCDs
The puppy-4.1.2 image does not contain the
No, Ron. You need FLdigi for PSKMAIL and you also need it for NBEMS/FLARQ.
There are some alpha version recently released that do not crash as you
described. I'll look for the link and post it here. The wandering waterfall
is still an issue though. The RS ID issues has been fixed, I
What are the RSID numbers for BPSK500, BPSK1000, QPSK500 and QPSK1000?
Does anybody know?
73,
Rein PA0R
--
http://pa0r.blogspirit.com
Announce your digital presence via our Interactive Sked Pages at
http://www.obriensweb.com/sked
Recommended digital
For the jpskmail client:
http://sharon.esrac.ele.tue.nl/pub/linux/ham/pskmail
for windows setup you need jpskmail-0.3.8-Setup.exe
The file is 7.3 MB
The server is now available as a puppy live CD in
http://sharon.esrac.ele.tue.nl/pub/linux/ham/pskmail/liveCDs
you need the pskmail_server-0.9.22b
'QSY' traffic is used on some servers to use a separate frequency for arq
traffic.
On receipt of the QSY command the server will jump to that frequency. Mode will
not switch.
There are 3 ways to switch modes:
* By using RSIDtx on the client and RSIDrx on the server...
The server needs
Who makes the BEST radio for 30 meters.
Elecraft K3.
Rein PA0R
--
http://pa0r.blogspirit.com
Announce your digital presence via our Interactive Sked Pages at
http://www.obriensweb.com/sked
Recommended digital mode software: Winwarbler, FLDIGI,
It is stupid to send forms.
Send the content as a CSV record and generate the form at the receiving end...
Rein PA0R
-Ursprüngliche Nachricht-
Von: chuck_sprick ke5...@arrl.net
Gesendet: 09.10.09 20:49:55
An: digitalradio@yahoogroups.com
Betreff: [digitalradio] ICS-213 Form Required
Then, you need to decide which PSKMAIL SERVER you think will be best for the
current conditions, there is a list of servers on their Wiki. Place the
callsign of the server on the configure area where you placed your callsign.
You can ping on the frequency to hear which servers are
connect to the server (watch status = connected),
goto edit-preferences-email data, push the 'update server' button..
Rein PA0R
-Ursprüngliche Nachricht-
Von: obrienaj andrewob...@gmail.com
Gesendet: 07.10.09 00:47:08
An: digitalradio@yahoogroups.com
Betreff: [digitalradio] Re:
The next server (0.9.17, in test on PI4TUE) uses 3-way handshake on connect,
which solves the problem.
Rein PA0R
-Ursprüngliche Nachricht-
Von: Andrew O'Brien andrewob...@gmail.com
Gesendet: 07.10.09 20:43:15
An: digitalradio@yahoogroups.com
Betreff: [digitalradio] Re: PSKMAIL: A
I attempted to use jPSKMAIl today for first time in a long time. I was able
to easily connect to WB5CON tonight and received a message several times that
said
Hi K3UK, pse update your record
I updated my record by connecting and then configuring mail server settings
in jPSKMAIL. I
Correct for the jpskmail client, it is possible on the old Linux client
(version 1.1).
I built peer-to-peer operation into the client on request of the NBEMS guys,
but they lost interest in pskmail so I stopped putting effort into that.
You will see that TTY is greyed out in the Mode menu.
We use center frequencies, as the sweet spot depends on the filter you use,
e.g. the center freq. of the dsp in the ICOM 756 is on 1500 Hz..., several
CW filters are on 700 Hz etc...
Only the 'Intermar' servers advertize vfo dial freqs, because they think
sailors
can't do the math...
73,
jPSKMAIL with FLDIGI : BPSK, THOR amd MFSK ARQ message transfers
via BBS . Some Twitter integration. POP3 Mail capability.
* FLDIGI and PSKMAIL both have linux options.
Did I miss anything?
Pskmail does NOT need a BBS. Unlike winlink it works directly with any email
account.
Speed
Warren,
we are using THOR 4 - 22 for pskmail ARQ in cases where the path is not good
for
PSK63 - 250. It is a fantastic weapon against multipath and QRN.
Some of our servers now have RSID on, and the protocol timing was
changed to incorporate ARQ for the THOR (and MFSK) modes.
73,
Rein PA0R
3.5.2. Other controls
RSID
This button turns on the receive RSID (automatic mode detection and
tuning) feature. When in use, the button turns yellow and no text
reception is possible until a signal is identified, or the feature is
turned off again. If you plan to use the RSID feature on
PSKmail uses normal zip compression and B64 encoding.
On small files with english text the compression reached by using varicode
alone is better.
That is why I abandoned compression for email text. Also, when you want
to use simple compression schemes your result has to be 1-bit clean,
which
I cannot understand why you don't use the pskmail arq binary mail attachment
feature for this.
7 plus was developed for the ancient packet BBS system around 1978 (which means
it is 30 years old). We have more modern protocols now...
Using the mail attachment system has a lot of advantages for
No AGC means all stages in the chain (including the first mixer) have to cope
with
a dynamic range of 130 dB (in a proper receiver).
The only remedy is proper filtering as early in the chain as possible, with a
carefully
designed AGC system..
Some 25 years ago Ulrich Rohde has writtien some
PSK31: 100 Hz filter (not dsp unless the agc is generated before)
PSK250: 300 Hz filter. (see above).
A K3 can do it all with its superior dsp.
Rein PA0R
-Ursprüngliche Nachricht-
Von: Andy obrien k3uka...@gmail.com
Gesendet: 29.05.09 02:09:34
An: digitalradio
The first mult-protocol pskmail gateway is now in testing.
At DA5UWG we have an XNet server running on the pskmail server, which functions
as a pskmail/AX25 gateway to pactor transport links on 20/15m , to the db0pdf
packet digipeater,
and to the IGate packet network.
73,
Rein PA0R
Just copy the javapskmail.jar file over the old one and leave everything else
in place...
Or use the new pskmail_0_3_5c.zip archive from Per...
The pskmail mailing list has more info.
73,
Rein Pa0R
.
-Ursprüngliche Nachricht-
Von: Bill McLaughlin n9...@comcast.net
Gesendet:
Hi Toby, you may want to try 10.148, the server network there will let you
connect
from all over EU during the daytime.
We see connects from Moscow, from the Cap Verde Islands, from south of Spain...
40 meters is bad because of QRM, the band being very narrow, and everybody
is on top of each
I am not completely understanding what you can do with PSKmail such as
listing files, etc. Not much happens when I connect but maybe my
connection is not good enough? I realize that the Windows version is not
fully operational at this time, but it gives you a taste of the system.
The
Yes, the server is linux only at the moment. Ultimate goal is to use a
LAMP server without a GUI in future, but fldigi needs the GUI :)
We may also port the server to java some time, but we have to do it
step by step.
BTW, it is quite easy to install a server on UBUNTU, The installation
http://pskmail.wikispaces.com/
http://pskmail.wikispaces.com/PSKmailservers
http://www.freelists.org/archive/pskmail
73,
Rein PA0R
-Ursprüngliche Nachricht-
Von: Russell Blair russell_blai...@yahoo.com
Gesendet: 31.03.09 16:06:37
An: digitalradio@yahoogroups.com
Betreff: Re:
they perform...
Tnx again, some more experimenting to do :)
Rein PA0R
-Ursprüngliche Nachricht-
Von: Stelios Bounanos digra...@enotty.net
Gesendet: 31.03.09 19:45:04
An: digitalradio@yahoogroups.com
CC: Rein Couperus r...@couperus.com
Betreff: Re: [digitalradio] PSKMail Windows server
We use search acquisition range of 40Hz , and 6dB for PSK250. That will solve
your problem. AFC should be on on.
Sweet spot wherever your filter sweet spot is. E.g. to use the DSP on a IC756
we use 1500,
default is 1000 Hz. Use a 300 Hz filter if possible.
Rein PA0R
-Ursprüngliche
The servers communicate with gmail using TLS.
For a gmail address the pop user id must be set to addr...@gmail.com,
pop host is pop.gmail.com
73,
Rein PA0R
-Ursprüngliche Nachricht-
Von: Andrew O'Brien k3uka...@gmail.com
Gesendet: 22.03.09 01:20:23
An: digitalradio@yahoogroups.com
In EU only 500 Hz bandwidth is allowed on 30 meters.
I would suggest those interested in pskmail to discuss further on the pskmail
list,
you are invited to join at http://www.freelists.org/archive/pskmail.
The chances you get help there are bigger and to organize the servers
all present
BTW, I am seeing some APRS posits in Asia with US calls
when you enter West longitudes you have to use a minus sign :)
edit-preferences-user date-longitude
tnx,
Rein PA0R
--
http://pa0r.blogspirit.com
Announce your digital presence via our
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,
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
You just described the reason for development of pskmail with PSK250+arq...
Rein PA0R
seems to need a perfect signal to work, and when was the last time you saw a
perfect signal?
John
VE5MU
--
http://pa0r.blogspirit.com
Announce your digital
I will elaborate on this as soon as a get home from our cqww-cw location,
packing now...
Rein CT3/PA0R/P, CT9L
-Ursprüngliche Nachricht-
Von: expeditionradio [EMAIL PROTECTED]
Gesendet: 03.12.08 07:21:45
An: digitalradio@yahoogroups.com
Betreff: [digitalradio] Emcomm Message
I have tested THOR22 extensively with PSKmail the past weeks, comparing it to
PSK250. It has shown that when PSK250 does not work anymore THOR22 is an
excellent
replacement. The idea is that when the channel goes so bad that arq with PSK250
slows
down to a factor of 4 (PSK63 speed) it is
For broadband transfers you need to go above 3.600 in EU, where the pactor 3
stations are 3588 is not according to the IARU band plan.
73,
Rein PA0R.
Hi Matthew
In Europe there is some activity around 3588 @ 20:00 UTC
73 de LA5VNA Steinar
--
http://pa0r.blogspirit.com
You may be able to hear the pskmail servers on 10148.0 kHz..
Best time is around 6:00 UTC,
Rein PA0R
-Ursprüngliche Nachricht-
Von: Andrew O'Brien [EMAIL PROTECTED]
Gesendet: 27.09.08 00:15:35
An: DIGITALRADIO digitalradio@yahoogroups.com
Betreff: [digitalradio] 30M
Just a
Greetings and thank you.. Cpan came to the rescue as far as
getting everything working but I have another problem in that I can't
use fldigi3.0 or 3.02 or 3.03 and PSKMail1.0..
What exactly is the problem Hal? What do you mean, 'can't use'?
Rather than a long winded
I was the guy asking for documentation (hi). Sorry but no time at the moment.
You may want to take a look at my winkey driver (which is the K1EL CW chip in
the microHAM keyer).
The Linux winkey driver is compatible with cwdaemon which does CW and PTT, and
is a perl script running in
user
OK, I applied it to my CW keyer, and the first station i worked
was YB0RFG.
Amazing stuff..
Rein
-Ursprüngliche Nachricht-
Von: Andrew O'Brien [EMAIL PROTECTED]
Gesendet: 23.09.08 13:23:35
An: DIGITALRADIO digitalradio@yahoogroups.com
Betreff: [digitalradio] How to increase the
Makes a lot of sense Hal...
You find the frequency/mode table at:
http://pskmail.wikispaces.com/PSKmailservers
All frequencies in that table are center frequencies, i.e. VFO + 1000 Hz if
your
sweet spot is 1000 Hz.
Here is an excerpt, the sacanning frequencies are at the bottom (minutes
This means flexibility is gone unless the rig dsp software is open source
and programmable?
Rein PA0R
-Ursprüngliche Nachricht-
Von: Simon Brown \(KNS\) [EMAIL PROTECTED]
Gesendet: 18.09.08 14:15:34
An: digitalradio digitalradio@yahoogroups.com
Betreff: [digitalradio] No More
http://hermes.esrac.ele.tue.nl/maps/pskmailers.php
The blue markers are servers, the red ones clients.
Contact to the sysops via the mailing list:
http://pskmail.wikispaces.com/Mailing+list
73,
Rein PA0R
-Ursprüngliche Nachricht-
Von: Russell Blair [EMAIL PROTECTED]
Gesendet:
There is one exception to the rule.
Pskmail arq works perfectly with vox. Just a matter of optimizing the
protocol to fit common hardware instead of the reverse...
The trick (thanks K9PS) is to send up to 512 bytes of data in a frame and
allow some more time for the switchovers.
73,
Rein
Rick,
the K2 works ok for the wider modes, with the SSB module built in.
I have used it e.g. for MT63 2k, and it worked fine.
You do need the modification which temperature-compensates the vfo.
MFSK16 is no problem with the K2, I have used it succesfully with gMFSK.
I bought the FT897D, which
Enable your RF attenuation and increase the volume. This can help keep a
strong signal from wiping out the weaker ones.
Attenuation will probably be around 20 dB, but by dropping the noise level,
the signal readability may improve.
AGC (Automatic Gain Control) does nothing for a weak signal;
Control) does
nothing for a weak signal; it only levels the louder ones.
Rein Couperus wrote:
This is a fairly stupid advice, and if you follow it you will miss
about 50% of the fun.
I am afraid that such a phrase is too strong...
First thing to do of course is make sure
Frank,
500 Hz is already a nice improvement with respect to 2.5 kHz..
While on the subject of filters, my current setup allows me to narrow
my SSB signal down to 500 Hz. Maxed out, the pass band is about 2.7
kHz, (3.6 on CW Wide.)
I have no optional filters installed, so I've been thinking
Warning:
DXpeditions have a lifetime of average 1 week, they send there 'clients'
where they find a quiet spot. The next one will find you.
73,
Rein EA/PA0R/P
Hi Sholto,
During DXpeditions, it seems that split frequency
operators were telling people to listen in the same
segment
For people who don't want the 'hassle' of installing some perl modules
via CPAN there are 2 possibilities:
* Run pskmail and fldigi from the pskmail_puppy live CD. It boots in 45
seconds
the second time if you save some files on your C drive after first use.
This will give you fldigi 2.09 and
All high-latency modes are unsuitable for ARQ.
A persistent misconception is that you would be using signals near the noise
level.
As I have stated many times, noise is hardly ever the problem unless it is S8.
The problem is multi-path causing QSB (up to 80 dB on path we are using) and
QRM from
I earlier mentioned ARQ in real time, but if you use the programming
technique that KN6KB used when he developed SCAMP, (Sound Card Amateur
Messaging Protocol), he used RDFT. While this was not practical to
decode during each cycle, he was able to work in the background with the
past
For a 20 Mile path to the server I use 28 MHz ground wave, works with 5 Watts
pskmail day and night.
That is with PSK 250. The server has a horizontal dipole on the roof of a 65
meters high building.
When I am at our contest location in Germany, 100 Miles away, I use 80 meters
NVIS with 80
Most of your questions are answered here:
http://pskmail.wikispaces.com/PSK_arq
73,
Rein PA0R
-Ursprüngliche Nachricht-
Von: digitalradio@yahoogroups.com
Gesendet: 07.01.08 02:37:18
An: [EMAIL PROTECTED]
Betreff: [digitalradio] NBEMS experience today
Several of us
Wrong again...
* Every pskmail server has a local mailbox, so you can operate it without the
internet connection.
E,g, in some countries it is still forbidden to connect a radio to the
internet, those are the countries
which allow SSB on 30 mtrs by the way. For them the local mbox is the only
Jack,
yes, pskmail will work with PSK31 as well, in fact it will work with any mode
that transports
the complete set of ASCII characters (I am working on incorporating RTTY as
well).
But you will find PSK63 almost as good as PSK31, and a bit less sensitive to
frequency stability.
I am sure
windows software ; vbdigi.exe / flarq.exe compatible with
your pskmail system ?
73 de LA5VNA Steinar
Rein Couperus skrev:
Jack,
yes, pskmail will work with PSK31 as well, in fact it will work with any
mode that transports
the complete set of ASCII characters (I am working
2 Watts on 28148
http://www.findu.com/cgi-bin/raw.cgi?call=PA0R
Rein
-Ursprüngliche Nachricht-
Von: digitalradio@yahoogroups.com
Gesendet: 07.01.08 12:24:44
An: digitalradio@yahoogroups.com
Betreff: [digitalradio] For the HF Packet Baggers out there :-)
The statistics say it
Being so close to another net frequency is not going to work unless you
provide a proper filter.
Using flarq efficiently you need to
* use a 500 Hz filter or better
* use a distance of 500 Hz.
We have tried to put 2 pskmail servers on a 250 Hz distance but they
qrm'ed each other in such a way
Most pskmail servers have switched from PSK63 to PSK250,
the effective baud rate is 8x the rate of PSK31.
73,
Rein Pa0R
-Ursprüngliche Nachricht-
Von: digitalradio@yahoogroups.com
Gesendet: 05.01.08 05:21:14
An: digitalradio@yahoogroups.com
Betreff: [digitalradio] PSK250
So far I am very impressed with NBEMS's performance..especially
considering it was not meant for non-NVIS HF pathsfor non-NVIS HF
paths you might consider lowering the FLARQ exponent parameter to 2
or 3it shortens frame length and makes for less re-tries.
Don't make the block
Flarq is based on pskmail but is not completely compatible.
If there is enough interest I could think of generating a C++ class for
pskmail,
that would also make it a bit faster :) Would take some time though.
73,
Rein PA0R
-Ursprüngliche Nachricht-
Von:
Technically not a big deal indeed. But we are still talking about a few months
of
spare time :) I will think about it. It might even bring some new life to the
packet
network. Where I live it is a dying sport. Traffic on our local node (PI1EHV)
has gone
down to some 10% of what it was...
There is so much work involved in writing a fool-proof program with a good
user interface that having to also write the encoding / decoding interface
would make sure projects unfeasible for a single programmer who codes in his
spare time.
Simon HB9DRV
I can second that :)
Rein
If you have a windows XP machine with 512 MB RAM you may want to try
the windows version of the pskmail client. The puppy Linux image runs
inside windows and is just 256 MB, so it runs entirely in RAM.
As it uses QEMU not every soundcard is supported, only the VESA server works.
But you don't
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