So in ALE 400, the Master waits
2.5 sec and the Slave 6 sec, the goal being that at some moment the
Master
hears the Slave or reversely to reconnect.
I didn't realize this with ARQ FAE Patrick. If you use a SELCAL does the
answering station automatically change mode to slave and the
Trip,
You're not by any chance using a VOX interface (like the Signalink) with
the delay button pressed in are you? That would really screw up the
timing of FAE400.
I haven't experienced the collision problem other than when sigs are
really buried in noise.
I have also used FAE400 since it
Trip,
I've been using ALE400 for quite a while and never really had too many
problems with collisions in the past. Only recently since I am /QRP only
have I noticed the problem. I would take this to mean that it really
only manifests when signals are very weak.
The problem with slot-times or
Just wondered why there are so few spots on Andy's sked page recently?
http://www.obriensweb.com/sked/
also I am QRV on 14074 with RS-ID and CALL ID monitoring.
73 Sholto
K7TMG
I wonder when how they surveyed the W1AW listeners?
Perhaps I missed the opportunity to respond? Did anyone here respond to
their survey?
73 Sholto
Tony wrote:
- Original Message -
From: ARRL Web site memberl...@www. arrl.org
mailto:memberlist%40www.arrl.org
To:
It is not Olivia or MFSK16 guys.
It's just MFSK modulation based on Reed Solomon coding.
From Patrick's documentation:
Each mode corresponds to a message which is transformed in a particular
Reed-Solomon sequence. Each sequence is composed of 15 symbols (of 4
bits), each symbol being
Hi Dave,
Alex, VE3NEA has an interesting page about MMTTY performance here:
http://www.dxatlas.com/RttyCompare/
I completely agree with his results regarding the performance of TruTTY
and has been my preferred RTTY program for while now.
73 Sholto
K7TMG
Dave AA6YQ wrote:
I have the
Hi Charles,
The latest version of MultiPSK has AX25 using PSK 250 (or PSK 63)
modulation. I would be interested to see whether PSK 250 is any better
or worse than FSK 300.
73 Sholto
K7TMG
Charles Brabham wrote:
- Original Message -
*From:* Tony
JT65 I think.
Sholto
K7TMG
Simon (HB9DRV) wrote:
Please look at http://www.hb9drv. ch/tmp/pics/ OddMode.jpg
http://www.hb9drv.ch/tmp/pics/OddMode.jpg
What mode is this?
Simon Brown, HB9DRV
www.ham-radio- deluxe.com http://www.ham-radio-deluxe.com
When I use MultiPSK, I make sure the mic input is high (say 30% - 50%)
then use MultiPSK's waterfall AGC which often shows the weaker signals
as well as the loud one. I also use the manual notch on the rig to help out.
73 Sholto
Andy obrien wrote:
From time to time we have had
John,
ALE400 is not the best mode for this, not because it is a poor mode, but
because the user interface is very difficult to use and has turned
off many
potential operators.
Is it difficult to use? I have honestly not found this to be true. I
agree it is very different than what
And another point worth emphasizing is now that MultiPSK's RS ID
detection can be extended throughout a 44KHz bandwidth using its SdR
interface, it should be possible to initiate an ALE400 FAE ARQ
connection to a friend using their SELCAL which will be detected by them
automatically anywhere
I had a nice Contestia QSO yesterday. Heard a guy calling in it (without
RS ID) and it took me a minute to realize it was Contestia rather than
Olivia but it worked very well.
Regarding RTTYM, I believe if the UOS unshift-on-space option was
added (like most RTTY programs) it would be much
I've found the 1000Hz 8 tone waveform to be very good also. Nice
throughput and still plenty sensitive enough for many conditions.
Had a nice chat to KC5CAY in 8 tone Contestia today and that worked very
well, if a little fast.
I have the radio on 14072.5 USB if anyone wants to experiment with
Don't forget CW the first digital mode :)
I know...I know...
Sholto
K7TMG
Sholto.
David wrote:
Hi yes Sholto some forget about that one
digital ...on and off with a key...
have to use Digits to make it work
on either Key ..Keyer or Keyboard
Hi Hi
73 David VK4BDJ
Sholto Fisher wrote:
Don't forget CW the first digital mode :)
I
Why don't you put a tag line on this reflector so that every message
gets the sked page url added to the end of it?
They do this on the 30m digi group and it looks like this:
Please join in on Thursday and Sunday Night 30mtr PSK activity nights,
also when in the shack use the 30 mtr digital
whoops I see you already have it. But it is buried a little, maybe make
it more prominent?
73
Sholto
Andrew O'Brien wrote:
-My sentiments exactly Bob. I have tried and tried over the years and
cannot figure out why the digital part of the K3UK Sked page is not used
more. As you
I think the answer will prove to be very much a yes when it is
available in DM780.
I have heard other hams talking about Ghost QSOs in Olivia which is
true to an extent but it still relies on one party hearing the other
party in the first place. With RS ID it will be possible (more or less)
Just wanted to know if anyone knows how to add a new Slider in HRD? I
have an FT-450 and need a DIG.VOX slider. Has anyone done this?
I guess the CAT command is EX then P1=030 and P2=000 (off) to 100 but I
have no idea how to enter this into HRD to make it a slider.
Thanks,
Sholto
K7TMG
Simon,
Yes, no problem with waiting. For the most part the FT-450 plays very
nicely with HRD.
Thanks for your reply.
73
Sholto.
Simon (HB9DRV) wrote:
Sorry, better punctuation this time :)
You can't, please let me get the HRD 5.0 betas available for the test team
then I'll look at
Russell,
MultiPSK is able to send and received email via Winlink 2000 using its
141A (ALE) mode and one of the HFN pilot stations (see
http://hflink.com) which are generally accessible on most HF bands
throughout North America. MultiPSK will also allow you to export all the
received mail into
What is it with some of the WSPR folks these days?
Looking at the WSPRnet DB recently and I see guys running 50W, 100W,
500W and even 1000W???
I thought the WS part of WSPR meant Weak Signal?
Sholto
K7TMG
I understand that Bonnie but I meant in context of using WSPR on HF.
I have used WSPR at the mW level and been spotted all around the US,
surely there's no need to be running 50 or 100W (or higher) with this
mode on HF?
73
K7TMG
expeditionradio wrote:
Many moonbounce operators are
I use Pocket Digi on my iPaq 1940 pda and it works FB but I was
wondering if anyone knew a pda device/smartphone which has audio input
output available on a headphone jack? My iPaq only has output so for
input I have to acoustically couple the sig which is not optimal.
73
Sholto
K7TMG
Christian,
From a purely nostalgic viewpoint some of the older MFSK modes like
Piccolo, Coquelet Crowd could be a lot of fun to use on the amateur
bands. Performance-wise they are probably eclipsed by MFSK16/Olivia but
just as in Hellschreiber even CW, performance isn't everything.
You
There would be no mode wars if people take the time to understand the
benefits and limitations each mode has and make it a personal rule to
test the mode fully in a live setting before applying negative comments.
So much understanding can be gained from experience.
The same goes for sound card
Rick,
You can try Q15X25 if you have MixW and can find someone else to
experiment with.
See http://www.mixw.net/index.php?j=downloads for the .dll file
instuctions.
KE7HPV.
Rick W wrote:
I meant to bring up Q15X25 since this was going to be the solution for
HF packet a number of years
I know this is probably a bit off topic here but just thought I would
update you on using my FT-450 on digital modes.
As Bonnie pointed out, from this graph ...
http://www.projectsandparts.com/misc/ft-450tx.gif
... you can see that the published FT-450 Transmitter Specifications:
Audio
Thanks for the suggestions Bonnie. My tests were performed into a dummy
load at low levels but I don't have a calibrated signal generator. I do
have a scope so will do some testing to see what the amplitude from the
Sound card/Signalink looks like but I am fairly certain it is flat for
this
conclusion to the transceiver passband
based on the above figures.
73
Juergen, DL8LE
--- In digitalradio@ yahoogroups. com
mailto:digitalradio%40yahoogroups.com, Sholto Fisher sho...@... wrote:
Hi all,
I picked up a new Yaesu FT-450 over Xmas and have discovered
for MARS, such as 1K MT63 and Olivia 1K 32 tone (very nice weak
signal performance) I have not noticed the 450 being less effective than a
Harris RF350 (300 Hz - 3000 Hz BW). But I have not looked, either!
Cortland
KA5S
[Original Message]
From: Sholto Fisher sho...@probikekit. com
Hi all,
I picked up a new Yaesu FT-450 over Xmas and have discovered that the
transmit passband seems very uneven to me. Using the same settings, i.e.
audio drive, USB DATA mode, constant RF POWER selection - a single tone
from the soundcard at 500Hz could produce 20W, a tone at 1000Hz 7W, a
I compiled a spread sheet of output power vs input frequency for my
FT-450. If anyone has this radio could you run a similar test and post
the results?
The file is in the files section called yaesu_ft_450_transmit_passband.xls
73 Sholto
KE7HPV
Hi All,
Can anyone recommend a brand/model of an older cheap 2m rig which is
simple to hook up to a TNC for VHF packet only. I don't really want to
buy a new rig just for this use so am looking at older workhorses.
Power needs to be around 35W but would prefer a rig that can do a low
power
I agree with Skip on this Bonnie, the Signalink interface is a very good
digital interface and to write it off as a P.O.S is misinformed,
disingenuous, just plain wrong and potentially damaging to a small US
ham radio oriented company who manufacture quality products.
Just to reiterate I have
Bonnie and all,
I use the SignalLink SL-1+ (older version, not USB) for ARQ modes
successfully. I use MultiPSK and the ARQ modes I have tested and had
working are: ALE 141A, ALE400, Pax/Pax2 and Packet.
As there is no sound card Pactor (or AMTOR) ARQ there is no way to see
if it works but I
:
Sholto Fisher wrote:
Bonnie and all,
I use the SignalLink SL-1+ (older version, not USB)
for ARQ modes successfully. I use MultiPSK and the
ARQ modes I have tested and had
working are: ALE 141A, ALE400, Pax/Pax2 and Packet.
Hi Sholto,
The fact that you were able to make contacts
that still leaves 26 for synchronization
before receiving the FAE frame. I can't believe it makes any significant
difference at least for ALE400 FAE.
73 Sholto.
expeditionradio wrote:
--- In digitalradio@yahoogroups.com, Sholto Fisher [EMAIL PROTECTED] wrote:
Hi Bonnie,
Does it really make
Mike,
I know my iPaq H1940 has standard RS-232 serial available, all you need
is a cheap cable. From there you could presumably connect a tnc like an
SCS PTC II or even a cheap PK-232. All you would need is some terminal
software.
PocketDigi works very well and I have made contacts by using
Has anyone got Pactor-1 or Amtor capability handy? I dusted off the old
PK-232MBX and got it hooked up but can't find anyone to test it out
with! if you can help email me off the list and we can try it out (can
only do 30m/20m 6m right now)
By the way I have a page for connected qsos at
Hi Andy,
MultiPSK does the broadcast or FEC mode of Pactor-1 only. Just like
Amtor, Pactor had a broadcast mode too - quite good incidentally.
What I am wanting to test is Pactor-1 ARQ (or Amtor ARQ Mode A)
73 Sholto.
Andrew O'Brien wrote:
On Wed, Jul 16, 2008 at 6:02 PM, Sholto Fisher
I was just thinking about the problems with Windows being a non realtime
OS and the difficulty of precise timing for Pactor or AMTOR frames and
it occurred to me that Windows Mobile (Pocket PC) is an RTOS isn't it?
This question is probably for Vojtech but wouldn't it be possible to do
Paul,
I think what you heard was one half of a 75bd 850Hz shift FSK
transmission. This is a non amateur transmission. It has been a regular
visitor to 30m for many years. I hear it every day up in Washington.
73 Sholto
KE7HPV
Paul wrote:
Last night around 10.131Mhz from Central Oregon I
Here's some food for thought for digimode only ops.
DE NNN0ASA ZUJ CMB06-08:
RR NOALL
DE NNN0ASA 050
R 292200Z MAY 2008
FM CHNAVMARCORMARS WILLIAMSBURG VA
TO ALNAVMARCORMARS
INFO ZEN/CHIEF ARMY MARS FT HUACHUCA AZ
ZEN/CHIEF AIR FORCE MARS SCOTT AFB IL
BT
UNCLAS
SUBJ: CHNAVMARCORMARS BCST
.
It does make quite a noise when pedaling but it's not difficult.
73, Sholto.
Andrew O'Brien wrote:
--- In digitalradio@yahoogroups.com, Sholto Fisher [EMAIL PROTECTED] wrote:
Andy if you don't mind a little leg power you could try the Freeplay
Weza:
http://store.sundancesolar.com/frfrwe.html
Harrison explained that Ham radio operators, and particularly ARRL
members, closely identify with current and emerging radio technology.
Today, we are naming 'technology' as ARRL's new fifth pillar.
No doubt they will inform the amateur community of these intentions in
an ASCII bulletin
Andy if you don't mind a little leg power you could try the Freeplay Weza:
http://store.sundancesolar.com/frfrwe.html
I bought one a while back and I can run the FT-897 on it for quite
sometime before needing to recharge. I limit the power to around 10-15W
out on the rig. If you use a CW QRP
The problem with knowing where to tune any signal can be solved
completely by use of RS ID (as in MultiPSK, PocketDigi etc). It amazes
me we have had this technology for over a year now and very few people
seem to realize the potential of this.
Even with s/n ratios down around -15dB MultiPSK
, KV9U
Sholto Fisher wrote:
The problem with knowing where to tune any signal can be solved
completely by use of RS ID (as in MultiPSK, PocketDigi etc). It amazes
me we have had this technology for over a year now and very few people
seem to realize the potential of this.
Even with s/n ratios
Hello Bonnie,
I was wondering if you could bring me ( others in the group) up-to-date
with your MIL 188-141A ALE experiments? specifically I would be be
interested in knowing how most messages are passed? are they AMD/DBM or
DTM? The only ALE signals I have heard recently (at least on 30m)
Hi guys,
It occurred to me that right at the end of 30m might be a good place to
do WSPR.
The APRS packet ops use 10.149.200 and 10.149.400 for their transmitted
tones so this would leave a 500Hz margin if you used 10.149.900 for
WSPR. Of course you would need to be especially careful you
I managed my first 30m QSO in Jason with Roger, K0MVJ. I had 100% copy
here and sometimes couldn't even hear his signal. Roger was at 5W and I
was at 3W for a total path distance of 1230 miles. Interesting mode and
although maybe not optimal for HF it is certainly very sensitive.
73, Sholto
Hi Guys,
What is the actual objection? is it you worry there will be some rule
change in the future to allow WARC band contesting? You know there are
other groups who promote the use of 30m for events too (and have done so
for some time) including the FISTS club WARC Band Challenge - they
in the future to allow WARC
band contesting? Yes, contesting is a plague
73 LA5VNA Steinar
Sholto Fisher skrev:
Hi Guys,
What is the actual objection? is it you worry there will be some rule
change in the future to allow WARC band contesting? You know there are
other groups who
Steinar,
I have yet to use it in a real QSO but I have used the FAST/TURBO mode
in an HF simulator and been able to copy 100% at around -25dB.
How it would perform in real conditions I do not know but if I can find
anyone to try it with it will be worth the experiment I think.
73, Sholto.
Laurent, well OK, perhaps not rigorous science but at least it may make
people think about using modes other than PSK31 and see what is possible
at low power levels.
73 Sholto.
Laurent Laborde wrote:
2008/4/11, Sholto Fisher [EMAIL PROTECTED]:
If anything it will be a very interesting
Ron John,
MultiPSK has an analyzer function in it. It can measure baud rate and
shift of RTTY FSK signals. It will also attempt to measure the symbol
rate of BPSK signals.
I'm guessing that at 14097 it was either a Packet or Pactor station.
Pactor comes in 3 varieties I, II III. MultiPSK
Hi all,
I am in communication with Ev, W2EV with regards to the current PropNet
JT65 contention issue and he has asked what my proposal would be
regarding frequency coordination.
PropNet and JT65 both require international potential so this means they
both need to be in the small region of
Ron,
I asked Ev the same question and his reply was:
Hi Sholto,
During DXpeditions, it seems that split frequency
operators were telling people to listen in the same
segment that PropNET was operating within.
Trying to be good band co-occupants, we studied DX
spots and determined
Andy,
I am ok with this idea too but we have to start somewhere.
Ev is being extremely cooperative in looking for a solution/compromise
and I have posted a message to the WSJT group asking for their help too.
But I am seeing most JT65 and JT2 etc still using the 10.139 frequency
so thought
I see from Timewave's website there is now a PK-232/PSK and the DSP-232+
modem. The DSP-232+ blurb says it supports memory ARQ in pactor mode but
the 232/PSK doesn't. As both are around the same price (if you can find
anyone selling the DSP-232+) what are the other differences? both
presumably
MultiPSK can do 850Hz shift RTTY and add a CR at 72 chars if anyone
feels like recreating the old days! maybe there's someone still with a
mechanical RTTY machine who will let some of us younger guys experience
a QSO...
I'm up for it but it would have to be 30m (only decent antenna I got
Has anyone tried the SkyOFDM mode or Stanag-4285/4539 modes for Amateur
communications in the SkySweeper program?
All I have is the demo which doesn't allow live contacts but it can save
and load to a wav file which could be replayed I think.
According to the SkyOFDM config there are options
From: digitalradio@yahoogroups.com [mailto:[EMAIL PROTECTED] On
Behalf Of Sholto Fisher
Sent: Wednesday, February 06, 2008 10:37 PM
To: digitalradio@yahoogroups.com
Subject: [digitalradio] Olivia
Has anyone ever experimented with the 2 tone Olivia submodes?
How does say the 2/250
Has anyone ever experimented with the 2 tone Olivia submodes?
How does say the 2/250 mode compare to regular RTTY?
73, Sholto KE7HPV.
Tooner wrote:
MultiPSK gives an error in Vista 64-bit:
Windows - No Disk
Exception Processing Message 0xc013 Parameters
...
Cancel, Try Again, Continue
Selecting either will still pull up the program. Seems to work fine.
Not a biggie, but in case someone else is using the same
:
--- In digitalradio@yahoogroups.com, Sholto Fisher [EMAIL PROTECTED] wrote:
MultiPSK has a lot more in it than just the ALE Frank.
That's cool, and I can appreciate that. I've played with most of the
common digital modes software and have to say MultiPSK has a lot of
'meat' to it. However
language for special applications.
Really there is so much in this program to have fun with! I am sure I
have not covered everything in this list.
73, Sholto KE7HPV.
Tooner wrote:
--- In digitalradio@yahoogroups.com, Sholto Fisher [EMAIL PROTECTED] wrote:
For me personally MultiPSK allows
Howard,
I am just doing some testing of the MP73-N etc modes on 30m. I didn't know
they existed until Jens, OV1A mentioned them.
I post my spots on http://www.projectsandparts.com/30m/
73, Sholto KE7HPV.
Hi Sholto...
Are we testing narrow band at all now? It seems like it's
I was wondering if a recognized 30m Narrow Band SSTV calling frequency would
be a good thing to discuss? Because it is narrow band and the usable area on
30m is limited it makes sense to me to try to encourage a calling frequency,
similar to 14.230 on 20m.
To try and hunt through the 30m spectrum
Andy,
Looking at http://www33.ocn.ne.jp/~je3hht/mmsstv/mode.txt the sync is at
1900Hz and the tones occupy 2044Hz-2300Hz.
Even with the sync it is only 400Hz or am I missing something?
73, Sholto KE7HPV.
- Original Message -
From: Andrew O'Brien [EMAIL PROTECTED]
To:
Oh it's probably the FSKID I think
- Original Message -
From: Andrew O'Brien [EMAIL PROTECTED]
To: digitalradio@yahoogroups.com
Sent: Monday, January 21, 2008 5:32 PM
Subject: [digitalradio] How do we know MP73-N is less than 500 hz ?
When I look at MP73-N in the MMSSTV waterfall
I bought a Tektronix 2225 dual 50 MHz on eBay for $100 couple years back.
Works fine for HF.
73, Sholto KE7HPV.
- Original Message -
From: Tooner [EMAIL PROTECTED]
To: digitalradio@yahoogroups.com
Sent: Monday, January 21, 2008 9:47 PM
Subject: [digitalradio] been thinking about an
Jens,
Thanks for information. I had absolutely no idea there was already a narrow
band SSTV mode in MMSSTV.
Just shows no matter how long you've been a ham there is always something
new to learn!
I am guessing then that this mode would be legal now on 30m in FCC areas as
well as Region 1?
I
Patrick, I just assumed that a digital SSTV mode in 500Hz that could send a
decent size picture in a reasonable amount of time was impossible. Certainly
if it is possible then it would make more sense to look at that approach.
Then error correction could also be applied...
73, Sholto KE7HPV.
Hi Andy,
Yes I am sure it is legal now.
I am copying Rick's response to a question about MFSK16 SSTV posted in this
group a while back:
Rick said:
Yes, thanks to Mark, N5RFX, who petitioned the FCC last year, the
decision was made to allow any kind of image transmission (analog or
digital) in
Andy,
I agree with you - it would be nice to have a general purpose narrow
bandwidth image mode which could be used in a stand alone fashion.
The problem with MFSK16 SSTV is that it is tied to MFSK16 and you can't
receive it if you didn't catch the MFSK Pic: command.
Perhaps one of the
to put it into place, but others
with production digimode programs are better situated to do it now.
73,
Leigh/WA5ZNI
On Sat, 19 Jan 2008 7:34 pm, Sholto Fisher wrote:
Andy,
I agree with you - it would be nice to have a general purpose narrow
bandwidth image mode which could be used
It is getting a bit crazy on 30m. I have been seeing a lot of Winlink
QRM lately.
If anyone doubts this, put your receiver on 10.140 USB and watch the
PSK31 QSOs for a while. You can guarantee you won't have to wait very
long before some Pactor station Winlink server switch to Pactor-3 and
cover
I fully agree. I have no problem with the mode or modulation. I wish I could
run Pactor-2 cheaply!
It is just the Pactor-3 bomb from unattended Winlink machines that
explodes over existing QSO's in the narrowband data areas that irritates me.
I am happy to put Jack's Pactor/Packet (kb-2-kb)
Hi Simon,
I was wondering if you had thought about including Patrick's Reed Solomon
detection feature in DM780?
I realize DM780 doesn't have all the modes MultiPSK has, and DM780 has
Throb-X 4 baud which MultiPSK doesn't - but if you just had the recognition
part for the modes in common I think
Hi Skip,
Just a minor note, some of the Microsoft libraries (dll's) you reference in
the program are older versions. I think you might need to download Visual
Studio SP6B, update the references and recompile? That should stop the The
file being copied is older than the one presently on your
If anyone wants to try I am QRV on 10.137 (+1000AF) with VBDigi FLArq.
73 Sholto
KE7HPV DN08
- Original Message -
From: Bill McLaughlin [EMAIL PROTECTED]
To: digitalradio@yahoogroups.com
Sent: Wednesday, January 02, 2008 11:57 AM
Subject: [digitalradio] Re: NBEMS setup
You might
You don't, you would use either Pactor-1 FEC or RTTY to call CQ first.
73 Sholto
KE7HPV.
- Original Message -
From: Roger J. Buffington [EMAIL PROTECTED]
To: digitalradio@yahoogroups.com
Sent: Monday, December 31, 2007 10:44 AM
Subject: Re: [digitalradio] Re: Is PACTOR I Actually DEAD
: Monday, December 31, 2007 10:56 AM
Subject: Re: [digitalradio] Re: Is PACTOR I Actually DEAD For KBD - KBD?
Sholto Fisher wrote:
You don't, you would use either Pactor-1 FEC or RTTY to call CQ
first.
Yes, I know. That was my point. I haven't heard a Pactor FEC signal in
3 or 4 years
I probably should not get involved but here's a classic example of why
feelings against Pactor 3 run so high.
The frequency is 10.140, the mode is PSK31, it is 19:39 UTC today (29th Dec)
and VE1CDD is in QSO with PJ2MI, N0MNO and KJ7A are on frequency and I am
calling CQ. A Pactor-1 call up can
It can also clog up our bands.
For instance I am monitoring a Pactor 2 transmission on 30m that has been on
going for around 25 minutes so far and the latest email to go through is
titled:
FW: Please read til the end-Why boys need parents...269250
Do we really need 262Kb emails like this on
You wrote:
it must be FEC. My understanding is that all Winlink 2000 transmissions
are Pactor ARQ.
Methinks something stinks here:)
Well I assure you it doesn't stink!
There are many programs which will monitor Pactor ARQ. For instance
MultiPSK, Digipan, MixW.
73 Sholto
KE7HPV.
-
Be Reliable in Emergencies
Could you set up an automatic archive of these PACTOR transmissions,
like the various ones that exist for SSTV?
Leigh/WA5ZNU
--- In digitalradio@yahoogroups.com, Sholto Fisher [EMAIL PROTECTED]
wrote:
For instance I am monitoring a Pactor 2 transmission on 30m
be in Snopes by now.
David
KD4NUE
-Original Message-
From: digitalradio@yahoogroups.com [mailto:[EMAIL PROTECTED] On
Behalf Of Sholto Fisher
Sent: Friday, December 14, 2007 8:05 PM
To: digitalradio@yahoogroups.com
Subject: Re: [digitalradio] Re: Winlink Can Be Reliable in Emergencies
My 2 cents/pence/yen worth:
I think one of the biggest drawbacks to the ALE modes in Amateur use is the
complexity and bewildering number of options, calling methods and messaging
types. It's just not going to gain any real traction without it being simple
to use. PSK31 is the poster child for
Can anyone record a minute or two for me to have a listen please?
Sholto KE7HPV.
- Original Message -
From: Les [EMAIL PROTECTED]
To: digitalradio@yahoogroups.com
Sent: Tuesday, October 23, 2007 12:22 PM
Subject: [digitalradio] Re: 30m 2.8KHz wide digital signal QRM
Yes but the
I don't know if this info is much use but Skysweep Technologies bundle an
OFDM (TX RX) mode with their SkySweeper 5.12 package.
http://www.skysweep.com/skysweep.html
The mode is called SkyOFDM and from their help file:
SkyOFDM is a state of art high speed modem based on the OFDM and turbo
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