[digitalradio] MT63 is NOT spread spectrum!
MT63 is PSK, and if you go to this link http://f1ult.free.fr/DIGIMODES/MULTIPSK/MT63_en.htm you can see how the carriers are fixed in frequency and not random in frequency. In fact, the description of MT63 is, DBPSK on 64 carrier tones. The tones are separated by 7.81 Hz for the 500 Hz bandwidth, 15.625 Hz for the 1000 Hz bandwidth or 31.25 Hz for the 2000 Hz bandwidth mode. The data is encoded using a Walsh-Hadamard transform to provide high degree of redundancy. The tones (i.e. carriers on a SSB transitter) are in a FIXED place and NOT randomly assigned a frequecy, so MT63 is NOT frequency hopped, or spread spectrum, even though it can be as wide as 2000 Hz. The spectrum of MT63 shows this very clearly. Compare that to the spectrum of ROS 16 and 1 baud of 2250 Hz width. 73 - Skip KH6TY
Re: [digitalradio] mt63
Tony, Just got in from work(night job) 11:48Z. I am off today but will have to take a nap, then get up. Will try and catch up with you later today or tonight. Thanks Hal - Original Message - From: Tony To: digitalradio@yahoogroups.com Sent: Wednesday, May 26, 2010 10:11 PM Subject: Re: [digitalradio] mt63 On 5/26/2010 9:41 PM, Hal Stang wrote: If so What frequencies do they normally hang out on -80/40/20 meters? Hal Hal, Seems the majority of MT63 activity is on 20 meters - 14108.0 / 14109.0. It is sparse though. I do see some using the 500Hz mode around 3586.0. I can meet you on 14108.0 if you like -- it's 0210z. Tony -K2MO - Original Message - From: obie47165 To: digitalradio@yahoogroups.com Sent: Wednesday, May 26, 2010 8:07 PM Subject: [digitalradio] mt63 Is there any activity on mt63 on 20 meters or is it far and few between.. POB/K8LEN __ Information from ESET NOD32 Antivirus, version of virus signature database 5148 (20100526) __ The message was checked by ESET NOD32 Antivirus. http://www.eset.com
[digitalradio] mt63
Is there any activity on mt63 on 20 meters or is it far and few between.. POB/K8LEN
Re: [digitalradio] mt63
maybe one or two stations per day, tops. On Wed, May 26, 2010 at 8:07 PM, obie47165 obie47...@yahoo.com wrote: Is there any activity on mt63 on 20 meters or is it far and few between.. POB/K8LEN
Re: [digitalradio] mt63
If so What frequencies do they normally hang out on -80/40/20 meters? Hal - Original Message - From: obie47165 To: digitalradio@yahoogroups.com Sent: Wednesday, May 26, 2010 8:07 PM Subject: [digitalradio] mt63 Is there any activity on mt63 on 20 meters or is it far and few between.. POB/K8LEN
[digitalradio] MT63 Operation
Lately I've been playing around with MT63 at the 500 hz bandwidth. It was just about the only digital mode that I had not experimented with since getting on the digital modes in 2003. I've made some contacts around 3584 kc and 14074 kc. The band plans that I see for 20 meters on the internet call for 14109 kc but I've seen no activity there or on any of other band The question is where most is the MT63 activity at? Or is there any? 73 GUD DX, Thomas F. Giella, NZ4O Lakeland, FL, USA n...@arrl.net PODXS 070 Club #349 Feld Hell Club #141 30 Meter Digital Group #691 Digital Modes Club #1243 WARC Bands Century Club #222 NZ4O Amateur SWL Autobiography: http://www.nz4o.org Try Hamspots, PSKreporter, and K3UK Sked Page http://www.obriensweb.com/skedpskr4.html Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/digitalradio/ * Your email settings: Individual Email | Traditional * To change settings online go to: http://groups.yahoo.com/group/digitalradio/join (Yahoo! ID required) * To change settings via email: digitalradio-dig...@yahoogroups.com digitalradio-fullfeatu...@yahoogroups.com * To unsubscribe from this group, send an email to: digitalradio-unsubscr...@yahoogroups.com * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[digitalradio] MT63 Operation
Lately I've been playing around with MT63 at the 500 hz bandwidth. It was just about the only digital mode that I had not experimented with since getting on the digital modes in 2003. I've made some contacts around 3584 kc and 14074 kc. The band plans that I see for 20 meters on the internet call for 14109 kc but I've seen no activity there or on any of other band The question is where most is the MT63 activity at? Or is there any? 73 GUD DX, Thomas F. Giella, NZ4O Lakeland, FL, USA n...@arrl.net PODXS 070 Club #349 Feld Hell Club #141 30 Meter Digital Group #691 Digital Modes Club #1243 WARC Bands Century Club #222 NZ4O Amateur SWL Autobiography: http://www.nz4o.org Try Hamspots, PSKreporter, and K3UK Sked Page http://www.obriensweb.com/skedpskr4.html Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/digitalradio/ * Your email settings: Individual Email | Traditional * To change settings online go to: http://groups.yahoo.com/group/digitalradio/join (Yahoo! ID required) * To change settings via email: digitalradio-dig...@yahoogroups.com digitalradio-fullfeatu...@yahoogroups.com * To unsubscribe from this group, send an email to: digitalradio-unsubscr...@yahoogroups.com * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [digitalradio] MT63 Operation
I have found it only around 14,109. But like many many modes - it's not used much. John, W0JAB At 03:37 PM 2/19/2010, you wrote: Lately I've been playing around with MT63 at the 500 hz bandwidth. It was just about the only digital mode that I had not experimented with since getting on the digital modes in 2003. I've made some contacts around 3584 kc and 14074 kc. The band plans that I see for 20 meters on the internet call for 14109 kc but I've seen no activity there or on any of other band The question is where most is the MT63 activity at? Or is there any? 73 GUD DX, Thomas F. Giella, NZ4O
[digitalradio] MT63 specifications
An excerpt from Pawel Jalocha's source code distribution: The MT63 modem is intended for amateur radio as a conversation (RTTY like) mode where one station transmits and one or more other stations can listen. In short, the modem transmits 64 tones in its 1 kHz bandwidth: the audio range for the tones is 500-1500 Hz. The differential bipolar phase modulation is used to encode 10 bits of information per second on each tone. The user data in the form of 7-bit ASCII characters is encoded as a set of 64-point Walsh functions. The bits are interleaved over 32 symbols (3.2 seconds) to provide resistance against both pulse and frequency selective noise or fading. The character rate equals to the symbols rate thus the modem can transmit 10 7-bit characters per second. This modem can as well run in two other modes obtained by simple time scaling, the possible modes are summarized here: BandwidthAudio RangeSymbol Rate Character Rate Interleave / Char. 500 Hz 500 - 1000 Hz 5 baud 5 char / sec 6.4 or 12.8 sec 1000 Hz 500 - 1500 Hz 10 baud 10 char / sec 3.2 or 6.4 sec 2000 Hz 500 - 2500 Hz 20 baud 20 char / sec 1.6 or 3.2 sec For each mode the interleave factor can be doubled thus each character becomes spread over twice as long period of time. The MT63 modem is made for single side band operation. The audio generated by the modem (sound card output) is applied to the SSB modulator. On the receiver side, the output of the SSB demodulator is put into the sound card input. The envelope of the MT63 signal is not constant as in other multi-tone systems - it is rather noise-like. One must be carefull not to overdrive the transmitter. The receiver of the MT63 is self-tuning and self-synchronizing thus the radio operator is only required to tune into the signal with +/- 100 Hz accuracy for the basic 1000 Hz mode. The modem will tell the actuall frequency offset after it is synchronized. The operator should not try to correct this offset unless he is able to tune very slowly his radio receiver, because the MT63 as a low rate phase modulated system does not like sudden frequency changes. The MT63 is a synchronous system and it relies on the sampling rate to be the same at the receiver and the transmitter. At least the sampling rates should not be different by more that 10^-4. MT63 samples at 8000 Hz thus if your card runs at 8000.5 it's probably OK but if it runs at 8005 Hz it's not good ! An extreme example can be my Soundman-16 (PAS-16 clone) which when asked to run 8000 Hz tell me, that it can only do 8008 Hz and it reality it runs at 7910.3 Hz which makes an error of more than 1% - far too much for the MT63 even at infinitely good S/N. My other two cards (DSP-16 and Ensoniq 1371) are more reasonable: they show an error of 0.3 to 0.5 Hz at 8000 Hz sampling.
Re: [digitalradio] MT63 Operating Tips
Cortland, I would imagine the mode works well for passing MARS traffic. Contestia seems to have about the same wpm rate in the 8 tone / 1k configuration and throughput seems to be better. There's no latency either so it might be worth a try. Not much use for wide high-speed chat modes on the ham bands, especially since most of us can't type that fast ; ). They are fun to experiment with though. Tony -K2MO - Original Message - From: Cortland Richmond k...@earthlink.net To: digitalradio@yahoogroups.com Sent: Monday, March 23, 2009 7:22 PM Subject: RE: [digitalradio] MT63 Operating Tips Hi, Tony! I use MT-63 on the Military Affilaite Radio System (MARS). Any of these widebandwidth modes will add up to more peak power than the average reading. I can run a *fair* amount of ALC, but I set the input by looking at the peaks on a 'scope hooked up to a directional coupler. Surplus or e-Bay scopes are cheap enough now that this may be a no-brainer for digital operators any more. Some modes are more sensitive to phase distortion than MT-63 too, and others, less. Either way,these modes require keeping the signal free of intermod, compression and flat-topping. One of the old AFSK RTTY tricks, and still a good idea, is to use high audio tones to suppress audio harmonics. Don't forget to set the actual sound card sampling frequency into whatever software used. Have fun! Cortland Richmond KA5S - Original Message - From: Tony To: digitalradio@yahoogroups.com Sent: 3/23/2009 4:31:02 PM Subject: [digitalradio] MT63 Operating Tips All, Had several QSO's with first-time MT63 OPs this week. Some had a difficulty getting used to the software settings so I thought I'd pass along a few tips. Peak Power: Peak power will be substantially higher than the average with this mode so it's best to use the software's tune feature to set the transmitters output. The most common mistake is setting the RF output power with the MT63 signal itself. This can cause distortion / throughput issues. A typical peak setting of 25 watts will show about 5 watts average on your rigs meter. Software: Fldigi, MultiPSK and Mixw all work well. Nino Porcino's MT63 Terminal has signal report and tune features that are useful for the beginner. It also has a couple of nifty analog gauges that measure confidence and SNR. It works well and is easy to setup. Use the asterisk * in the transmit buffer to allow the type-ahead feature. See http://xoomer.virgilio.it/aporcino/MT63/index.htm ...
[digitalradio] MT63 Operating Tips
All, Had several QSO's with first-time MT63 OPs this week. Some had a difficulty getting used to the software settings so I thought I'd pass along a few tips. Peak Power: Peak power will be substantially higher than the average with this mode so it's best to use the software's tune feature to set the transmitters output. The most common mistake is setting the RF output power with the MT63 signal itself. This can cause distortion / throughput issues. A typical peak setting of 25 watts will show about 5 watts average on your rigs meter. Software: Fldigi, MultiPSK and Mixw all work well. Nino Porcino's MT63 Terminal has signal report and tune features that are useful for the beginner. It also has a couple of nifty analog gauges that measure confidence and SNR. It works well and is easy to setup. Use the asterisk * in the transmit buffer to allow the type-ahead feature. See http://xoomer.virgilio.it/aporcino/MT63/index.htm Reception: Use the markers in the waterfall and keep the signal centered between them. Nino's MT63 software has a two-tone transmit marker that helps the other party tune your signal. It shows the receiving station where the top and bottom edge of the MT63 signal is. This feature is especially helpful when signals are weak. Fast Chat Mode: It will take some getting used to MT631K if your typing is slow; it's best to use the type-ahead buffer to keep things rolling along. The 1K mode does 100 wpm so text files can be sent at a fair pace. The cut-and-paste works well for sending emails and other small files. The mode resists QRM / QRN very well and will usually print with a fair chunk of the signal overlapped by another MT63 signal. Use common sense when running a wide mode like MT63. Listen carefully to make sure your not causing interference. The 1K, long interleave mode gives the best bang-for-the-buck. Tony -K2MO
Re: [digitalradio] MT63 Operating Tips
I use a PEP output meter and back off power a little to avoid clipping. I think that works too for people that know their way around. 73, Jose, CO2JA --- Tony escribió: All, Had several QSO's with first-time MT63 OPs this week. Some had a difficulty getting used to the software settings so I thought I'd pass along a few tips. Peak Power: Peak power will be substantially higher than the average with this mode so it's best to use the software's tune feature to set the transmitters output. The most common mistake is setting the RF output power with the MT63 signal itself. This can cause distortion / throughput issues. A typical peak setting of 25 watts will show about 5 watts average on your rigs meter. Software: Fldigi, MultiPSK and Mixw all work well. Nino Porcino's MT63 Terminal has signal report and tune features that are useful for the beginner. It also has a couple of nifty analog gauges that measure confidence and SNR. It works well and is easy to setup. Use the asterisk * in the transmit buffer to allow the type-ahead feature. See http://xoomer.virgilio.it/aporcino/MT63/index.htm Reception: Use the markers in the waterfall and keep the signal centered between them. Nino's MT63 software has a two-tone transmit marker that helps the other party tune your signal. It shows the receiving station where the top and bottom edge of the MT63 signal is. This feature is especially helpful when signals are weak. Fast Chat Mode: It will take some getting used to MT631K if your typing is slow; it's best to use the type-ahead buffer to keep things rolling along. The 1K mode does 100 wpm so text files can be sent at a fair pace. The cut-and-paste works well for sending emails and other small files. The mode resists QRM / QRN very well and will usually print with a fair chunk of the signal overlapped by another MT63 signal. Use common sense when running a wide mode like MT63. Listen carefully to make sure your not causing interference. The 1K, long interleave mode gives the best bang-for-the-buck. Tony -K2MO VI Conferencia Internacional de Energía Renovable, Ahorro de Energía y Educación Energética 9 - 12 de Junio 2009, Palacio de las Convenciones ...Por una cultura energética sustentable www.ciercuba.com
RE: [digitalradio] MT63 Operating Tips
Hi, Tony! I use MT-63 on the Military Affilaite Radio System (MARS). Any of these widebandwidth modes will add up to more peak power than the average reading. I can run a *fair* amount of ALC, but I set the input by looking at the peaks on a 'scope hooked up to a directional coupler. Surplus or e-Bay scopes are cheap enough now that this may be a no-brainer for digital operators any more. Some modes are more sensitive to phase distortion than MT-63 too, and others, less. Either way,these modes require keeping the signal free of intermod, compression and flat-topping. One of the old AFSK RTTY tricks, and still a good idea, is to use high audio tones to suppress audio harmonics. Don't forget to set the actual sound card sampling frequency into whatever software used. Have fun! Cortland Richmond KA5S - Original Message - From: Tony To: digitalradio@yahoogroups.com Sent: 3/23/2009 4:31:02 PM Subject: [digitalradio] MT63 Operating Tips All, Had several QSO's with first-time MT63 OPs this week. Some had a difficulty getting used to the software settings so I thought I'd pass along a few tips. Peak Power: Peak power will be substantially higher than the average with this mode so it's best to use the software's tune feature to set the transmitters output. The most common mistake is setting the RF output power with the MT63 signal itself. This can cause distortion / throughput issues. A typical peak setting of 25 watts will show about 5 watts average on your rigs meter. Software: Fldigi, MultiPSK and Mixw all work well. Nino Porcino's MT63 Terminal has signal report and tune features that are useful for the beginner. It also has a couple of nifty analog gauges that measure confidence and SNR. It works well and is easy to setup. Use the asterisk * in the transmit buffer to allow the type-ahead feature. See http://xoomer.virgilio.it/aporcino/MT63/index.htm ...
[digitalradio] MT63 Video
All, Uploaded a short video of the MT63 mode in action. The video shows how robust the mode can be when faced with heavy QRM. I was monitoring EA3AQS at the time when a Pactor station popped up in the middle of his signal. See MT63_Pactor_QRM_20M.wmv in the digital radio file section. Tony, K2MO
[digitalradio] MT63 sked - 2200z
All, I'll be QRV on MT63 starting 2200z. Should be around for an hour or two. Frequency -- 14106.0 USB Mode -- 1K / long Interleave Tony, K2MO
[digitalradio] MT63 - 14106.0
Sitting on 14106.0 1Kc long
Re: [digitalradio] MT63 -- Mutlipsk, IZ8BLY, MixW
Hi Dave,
Hi Tony.have you tried fldigi.. MT63
Yes I have. The simulator says it decodes about as well as IZ8BLY's
software.
Tony, K2MO
- Original Message -
From: David [EMAIL PROTECTED]
To: digitalradio@yahoogroups.com
Sent: Friday, September 26, 2008 7:34 PM
Subject: Re: [digitalradio] MT63 -- Mutlipsk, IZ8BLY, MixW
Hi Tony.have you tried fldigi...it is available from
http://w1hkj.com in both Windows XP and Vista as well as Linux.
it has MT63 500,1000 and 2000
73 David VK4BDJ
Tony wrote:
All,
There seems to be some difference between Mutlipsk, MixW and IZ8BLY's
software when it comes to decoding MT63. I ran all three programs
simultaneously with a path simulator in line and the SNR set above the
decode threshold.
The results were the same whether I ran the programs one at a time or
simultaneously. Not sure why this is; would appreciate it if someone
can shed some light on this. I plan to run each program on-the-air to
see if the results change.
Tony, K2MO
Test #1: SNR -6db selective fading
Test #2: SNR -3db selective fading
Test #3: SNR -3db selective fading / lightning static
Test #1
IZ8BLY MT63 Terminal
TH QUICK BRAOWN FOX JUOPS OVER THE LAZY [OG
THE QUICK BROWN FOX JUMPSOVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWNFOX JUMPS OVER THE LAZY DOG
MixW
TH QUI4 M)9Nd3/ANjV (UT$ExLZY UG
THE QUICK BRmWN 1OX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUIK BROWN F9XFJUmPS VER THE LAZY DOG
Multipsk
YhlU+ O~^ FlX JUiPSkOVER THE LAZY DOG
THE QUICK{BOovFV!D.M]y5xVr| +v75UX7ØOpL{
z]p?Bx~i6GzV$cSNVDcTH: LØZY DOG]mOT*
_
Test #2
MT63 Terminal
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
MixW
THF QUIaK BRORNdFOX J$MPS ?[7@ TWE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
Multipsk
THE QUICK BROWN FOX JM8; O5Es HE LAZY DG
THe*QICK BROWN F+X JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
__
Test #3
IZ8BLY MT63 TERMINAL
RON FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
MIXW
HE QUIAn BROWtF?X:J+MPS v)rR TE L/ZY DOG
THE QUICK BRKWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BRO9 FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
MULTIPSK
$Xiu(L Kka?SO?m)#-ap^jtOu{+^d4,-`Ø$P{8YAZY O)
,njl'KuBRja _J(/S VØRU!H5N(1=YDOG
THE QUIkK B}O9g OY4JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZYØDOG
Re: [digitalradio] MT63 -- Mutlipsk, IZ8BLY, MixW/Olivia
unlike PSK31 that mostly utilize the same 'core, other modes my well require comparison tests to determine which is consistently better. Andy K3UK Very interesting Andy. Patrick (F6CTE) motioned that sound card sampling accuracy plays a role with MT63. Tony, K2MO
Re: [digitalradio] MT63 -- Mutlipsk, IZ8BLY, MixW
Rick, When I have done some crude comparisons with actual off air tests between different programs, there is usually not a lot of difference I'm interested in your test method. Tony, K2MO
Re: [digitalradio] MT63 -- Mutlipsk, IZ8BLY, MixW
Patrick,
The sound card was already calibrated, but the offsets were not locked. Locking
them seems to have made a difference. I repeated the same tests and decoding
did improve with Multipsk (see below).
As for one program having an advantage over another, I guess it could be due to
the slight sensitivity advantage Nino's program seems to have. Minimum SNR
(errorr-free throughput) is -8db for IZ8BLY and -6db for Mutlipsk.
This seems to show-up in test #1 where the selective fading may be causing the
signal to dip below the -6db decode threshold for Multipsk. Nino's software has
a 2db buffer with this test.
In test #3 where there's selective fading and lightning static, things improve
with Multipsk when the SNR is inceased to +3db from -3db:
Multipsk Test #3
SNR +3db
THE QUIK BROW FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BRWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
SNR -3db
HE QUIK3,ROWS F'XexMn OVER THE L/ZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY D+G
THE QUICK BRWg FOX JMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
Thanks for all Patrick.
Tony, K2MO
++
Test #1: SNR -6db selective fading
IZ8BLY
TH; QUICK BAOWN FOX JUOPS OVrR THE LAZY [OG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWNFOX JUMPS OVER THE LAZY DOG
MixW
2Hx QU/8qvB,4YNn}mGbSI*+OenJX|Y aO|
TH3N$aaK RptNWFOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUIcK BROWN FOXFJUmPS VER THE LAZY DOG
Multipsk
THN QUICKFB;OW ZX JP OVXR THErL,ZY RG
THE [UICK BROW FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
Test #2: SNR -3db selective fading
IZ8BLY
THE QUICK BROWN FOX JUOPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
MixW
THE AUICKROWN F:X JUMPS ,VER THE L/ZY [OG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
Multipsk
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
___
Test #3: SNR -3db selective fading / lightning static
IZ8BLY
THE QUCIK BROWq FOX JUMPS OVrR THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
MixW
THH mUICK0I\OWm iZM JUMPS ,VER THE 2AZYzDOG
THE QUICK BROWN FOX xUMPS OVER THE LAZY DOG
THE QUICK BRO9N FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
Multipsk
HE QUIK3,ROWS F'XexMn OVER THE L/ZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY D+G
THE QUICK BRWg FOX JMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
___
Test #4 SNR -9db
IZ8BLY
TH QUICK BROWN FOX_UMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
MixW
UHE qU4C? BROWN 9GX'JUMPS OVE THE LAZY DOG
THE QUI^d BnCWNlFOX JUMPS OVERDTHE LAZY OGj
HEs%#IC BRWN FOX JUMS OV5R THE LAZYBDOG
THE QrCK BROWN FBX UXPS OVER {HELAZpHDOG
Multipsk
TH\ QUIF,RO\[ F(U'xM
S OV:R THE LAZY DOG
THE QUICKBRON FOX JUMPS OVER THE LAZY DOG
THE QUICK BRKWN FO { MPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
- Original Message -
From: Patrick Lindecker [EMAIL PROTECTED]
To: digitalradio@yahoogroups.com
Sent: Friday, September 26, 2008 7:04 PM
Subject: Re: [digitalradio] MT63 -- Mutlipsk, IZ8BLY, MixW
Hello Tony,
About Multipsk, could you first (if not done) the MT63 sampling calibration by
clicking on Sampling freq. and start the automatic calibration.
Note: in Multipsk there is a double correction:
* determination of the sampling frequency offset between the TX and the RX
sound cards. This function does not belong to the original soft nor Mixw,
* determination of the frequency offset.
If you do a comparizon, click on the first lock to 0 (to avoid the
determination of the sampling frequency offset, function which needs a good
MT63 signal).
However, the original soft could be much better (I wrote an independant MT63
decoding code and I don't know the way the original soft decodes).
73
Patrick
- Original Message -
From: Tony
To: digitalradio@yahoogroups.com
Sent: Saturday, September 27, 2008 12:35 AM
Subject: [digitalradio] MT63 -- Mutlipsk, IZ8BLY, MixW
All,
There seems to be some difference between Mutlipsk, MixW and IZ8BLY's
software when it comes to decoding MT63. I ran all three programs
Re: [digitalradio] MT63 -- Mutlipsk, IZ8BLY, MixW
Hello Tony, The sound card was already calibrated, but the offsets were not locked. Locking them seems to have made a difference. I repeated the Yes the locking of the sampling frequency, at least, must be done to compare. Note: I did this complex automatic shift sampling determination because MT63 has a problem which is inherent to the exagerated number of carriers (64). The more you have carriers the more the calibration must be precise. MT63 was done for almost perfect sound cards (Sound Blaster or equivalent). For the on-board sound cards, there is a problem due to the poor sampling accuracy of these cards, so you can't be sure that the other Ham has a well-calibrated sound card. It's the reason why I propose an automatic sampling autodetermination, by default, working only with good signals (as you saw in the previous tests). I think, aside to the poor average power/peak power ratio (about 0.1), this problem of calibration is an issue which limits the use of MT63 (Hams, in general, use their on-board sound card installed in their PC). have. Minimum SNR (errorr-free throughput) is -8db for IZ8BLY and -6db for Mutlipsk. -6dB for Multipsk seems correct for 10 bauds (I measure -5dB for 10 bauds). I agree that Nino's program has a better decoding program. TKS for all your interesting tests! 73 Patrick - Original Message - From: Tony To: digitalradio@yahoogroups.com Sent: Saturday, September 27, 2008 10:32 PM Subject: Re: [digitalradio] MT63 -- Mutlipsk, IZ8BLY, MixW Patrick, The sound card was already calibrated, but the offsets were not locked. Locking them seems to have made a difference. I repeated the same tests and decoding did improve with Multipsk (see below). As for one program having an advantage over another, I guess it could be due to the slight sensitivity advantage Nino's program seems to have. Minimum SNR (errorr-free throughput) is -8db for IZ8BLY and -6db for Mutlipsk. This seems to show-up in test #1 where the selective fading may be causing the signal to dip below the -6db decode threshold for Multipsk. Nino's software has a 2db buffer with this test. In test #3 where there's selective fading and lightning static, things improve with Multipsk when the SNR is inceased to +3db from -3db: Multipsk Test #3 SNR +3db THE QUIK BROW FOX JUMPS OVER THE LAZY DOG THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG THE QUICK BRWN FOX JUMPS OVER THE LAZY DOG THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG SNR -3db HE QUIK3,ROWS F'XexMn OVER THE L/ZY DOG THE QUICK BROWN FOX JUMPS OVER THE LAZY D+G THE QUICK BRWg FOX JMPS OVER THE LAZY DOG THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG Thanks for all Patrick. Tony, K2MO ++ Test #1: SNR -6db selective fading IZ8BLY TH; QUICK BAOWN FOX JUOPS OVrR THE LAZY [OG THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG THE QUICK BROWNFOX JUMPS OVER THE LAZY DOG MixW 2Hx QU/8qvB,4YNn}mGbSI*+OenJX|Y aO| TH3N$aaK RptNWFOX JUMPS OVER THE LAZY DOG THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG THE QUIcK BROWN FOXFJUmPS VER THE LAZY DOG Multipsk THN QUICKFB;OW ZX JP OVXR THErL,ZY RG THE [UICK BROW FOX JUMPS OVER THE LAZY DOG THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG Test #2: SNR -3db selective fading IZ8BLY THE QUICK BROWN FOX JUOPS OVER THE LAZY DOG THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG MixW THE AUICKROWN F:X JUMPS ,VER THE L/ZY [OG THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG Multipsk THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG ___ Test #3: SNR -3db selective fading / lightning static IZ8BLY THE QUCIK BROWq FOX JUMPS OVrR THE LAZY DOG THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG MixW THH mUICK0I\OWm iZM JUMPS ,VER THE 2AZYzDOG THE QUICK BROWN FOX xUMPS OVER THE LAZY DOG THE QUICK BRO9N FOX JUMPS OVER THE LAZY DOG THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG Multipsk HE QUIK3,ROWS F'XexMn OVER THE L/ZY DOG THE QUICK BROWN FOX JUMPS OVER THE LAZY D+G THE QUICK BRWg FOX JMPS OVER THE LAZY DOG THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG ___ Test #4 SNR -9db IZ8BLY TH QUICK BROWN FOX_UMPS OVER THE LAZY DOG THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG THE QUICK BROWN FOX JUMPS OVER
[digitalradio] MT63 -- Mutlipsk, IZ8BLY, MixW
All,
There seems to be some difference between Mutlipsk, MixW and IZ8BLY's software
when it comes to decoding MT63. I ran all three programs simultaneously with a
path simulator in line and the SNR set above the decode threshold.
The results were the same whether I ran the programs one at a time or
simultaneously. Not sure why this is; would appreciate it if someone can shed
some light on this. I plan to run each program on-the-air to see if the results
change.
Tony, K2MO
Test #1: SNR -6db selective fading
Test #2: SNR -3db selective fading
Test #3: SNR -3db selective fading / lightning static
Test #1
IZ8BLY MT63 Terminal
TH QUICK BRAOWN FOX JUOPS OVER THE LAZY [OG
THE QUICK BROWN FOX JUMPSOVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWNFOX JUMPS OVER THE LAZY DOG
MixW
TH QUI4 M)9Nd3/ANjV (UT$ExLZY UG
THE QUICK BRmWN 1OX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUIK BROWN F9XFJUmPS VER THE LAZY DOG
Multipsk
YhlU+ O~^ FlX JUiPSkOVER THE LAZY DOG
THE QUICK{BOovFV!D.M]y5xVr| +v75UX7ØOpL{
z]p?Bx~i6GzV$cSNVDcTH: LØZY DOG]mOT*
_
Test #2
MT63 Terminal
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
MixW
THF QUIaK BRORNdFOX J$MPS ?[7@ TWE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
Multipsk
THE QUICK BROWN FOX JM8; O5Es HE LAZY DG
THe*QICK BROWN F+X JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
__
Test #3
IZ8BLY MT63 TERMINAL
RON FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
MIXW
HE QUIAn BROWtF?X:J+MPS v)rR TE L/ZY DOG
THE QUICK BRKWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BRO9 FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
MULTIPSK
$Xiu(L Kka?SO?m)#-ap^jtOu{+^d4,-`Ø$P{8YAZY O)
,njl'KuBRja _J(/S VØRU!H5N(1=YDOG
THE QUIkK B}O9g OY4JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZYØDOG
Re: [digitalradio] MT63 -- Mutlipsk, IZ8BLY, MixW
Hello Tony,
About Multipsk, could you first (if not done) the MT63 sampling calibration by
clicking on Sampling freq. and start the automatic calibration.
Note: in Multipsk there is a double correction:
* determination of the sampling frequency offset between the TX and the RX
sound cards. This function does not belong to the original soft nor Mixw,
* determination of the frequency offset.
If you do a comparizon, click on the first lock to 0 (to avoid the
determination of the sampling frequency offset, function which needs a good
MT63 signal).
However, the original soft could be much better (I wrote an independant MT63
decoding code and I don't know the way the original soft decodes).
73
Patrick
- Original Message -
From: Tony
To: digitalradio@yahoogroups.com
Sent: Saturday, September 27, 2008 12:35 AM
Subject: [digitalradio] MT63 -- Mutlipsk, IZ8BLY, MixW
All,
There seems to be some difference between Mutlipsk, MixW and IZ8BLY's
software when it comes to decoding MT63. I ran all three programs
simultaneously with a path simulator in line and the SNR set above the decode
threshold.
The results were the same whether I ran the programs one at a time or
simultaneously. Not sure why this is; would appreciate it if someone can shed
some light on this. I plan to run each program on-the-air to see if the results
change.
Tony, K2MO
Test #1: SNR -6db selective fading
Test #2: SNR -3db selective fading
Test #3: SNR -3db selective fading / lightning static
Test #1
IZ8BLY MT63 Terminal
TH QUICK BRAOWN FOX JUOPS OVER THE LAZY [OG
THE QUICK BROWN FOX JUMPSOVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWNFOX JUMPS OVER THE LAZY DOG
MixW
TH QUI4 M)9Nd3/ANjV (UT$ExLZY UG
THE QUICK BRmWN 1OX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUIK BROWN F9XFJUmPS VER THE LAZY DOG
Multipsk
YhlU+ O~^ FlX JUiPSkOVER THE LAZY DOG
THE QUICK{BOovFV!D.M]y5xVr| +v75UX7ØOpL{
z]p?Bx~i6GzV$cSNVDcTH: LØZY DOG]mOT*
_
Test #2
MT63 Terminal
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
MixW
THF QUIaK BRORNdFOX J$MPS ?[7@ TWE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
Multipsk
THE QUICK BROWN FOX JM8; O5Es HE LAZY DG
THe*QICK BROWN F+X JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
__
Test #3
IZ8BLY MT63 TERMINAL
RON FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
MIXW
HE QUIAn BROWtF?X:J+MPS v)rR TE L/ZY DOG
THE QUICK BRKWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BRO9 FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
MULTIPSK
$Xiu(L Kka?SO?m)#-ap^jtOu{+^d4,-`Ø$P{8YAZY O)
,njl'KuBRja _J(/S VØRU!H5N(1=YDOG
THE QUIkK B}O9g OY4JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZYØDOG
Re: [digitalradio] MT63 -- Mutlipsk, IZ8BLY, MixW
Hi Tony.have you tried fldigi...it is available from
http://w1hkj.com in both Windows XP and Vista as well as Linux.
it has MT63 500,1000 and 2000
73 David VK4BDJ
Tony wrote:
All,
There seems to be some difference between Mutlipsk, MixW and IZ8BLY's
software when it comes to decoding MT63. I ran all three programs
simultaneously with a path simulator in line and the SNR set above the
decode threshold.
The results were the same whether I ran the programs one at a time or
simultaneously. Not sure why this is; would appreciate it if someone
can shed some light on this. I plan to run each program on-the-air to
see if the results change.
Tony, K2MO
Test #1: SNR -6db selective fading
Test #2: SNR -3db selective fading
Test #3: SNR -3db selective fading / lightning static
Test #1
IZ8BLY MT63 Terminal
TH QUICK BRAOWN FOX JUOPS OVER THE LAZY [OG
THE QUICK BROWN FOX JUMPSOVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWNFOX JUMPS OVER THE LAZY DOG
MixW
TH QUI4 M)9Nd3/ANjV (UT$ExLZY UG
THE QUICK BRmWN 1OX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUIK BROWN F9XFJUmPS VER THE LAZY DOG
Multipsk
YhlU+ O~^ FlX JUiPSkOVER THE LAZY DOG
THE QUICK{BOovFV!D.M]y5xVr| +v75UX7ØOpL{
z]p?Bx~i6GzV$cSNVDcTH: LØZY DOG]mOT*
_
Test #2
MT63 Terminal
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
MixW
THF QUIaK BRORNdFOX J$MPS ?[7@ TWE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
Multipsk
THE QUICK BROWN FOX JM8; O5Es HE LAZY DG
THe*QICK BROWN F+X JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
__
Test #3
IZ8BLY MT63 TERMINAL
RON FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
MIXW
HE QUIAn BROWtF?X:J+MPS v)rR TE L/ZY DOG
THE QUICK BRKWN FOX JUMPS OVER THE LAZY DOG
THE QUICK BRO9 FOX JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
MULTIPSK
$Xiu(L Kka?SO?m)#-ap^jtOu{+^d4,-`Ø$P{8YAZY O)
,njl'KuBRja _J(/S VØRU!H5N(1=YDOG
THE QUIkK B}O9g OY4JUMPS OVER THE LAZY DOG
THE QUICK BROWN FOX JUMPS OVER THE LAZYØDOG
Re: [digitalradio] MT63 -- Mutlipsk, IZ8BLY, MixW
It would also be very interesting to see if the improved MFSK modes in fldigi works better than in other software, especially when affected by lightning static. My informal tests seemed to suggest not much difference, however, if there was any difference, it might suggest that Multipsk was ever so slightly better. When I have done some crude comparisons with actual off air tests between different programs, there is usually not a lot of difference but sometimes there may be slight variations where in some modes there will certain characters that are correctly displayed in one program, yet other characters are correct in the other program. Thus it is often a wash (no significant total difference). It did seem that Multipsk had the edge in some of my testing and when I mentioned this to an on the air contact, the other ham was adamant that his testing overwhelmingly showed that HRD/DM780 was the best by far. Sound card calibration differences perhaps? 73, Rick, KV9U David wrote: Hi Tony.have you tried fldigi...it is available from http://w1hkj.com in both Windows XP and Vista as well as Linux. it has MT63 500,1000 and 2000 73 David VK4BDJ
[digitalradio] MT63 -- Mutlipsk, IZ8BLY, MixW/Olivia
I have NO clue about this but... Simon Brown shared some interesting findings about his experience in programming Olivia in to DM780. Some of the existing applications that have Olivia in them did not entirely implement Olivia in a manner than Simon thought was consistent with Pavel's original specifications. So, I take from this ,and now Tony's findings, that unlike PSK31 that mostly utilize the same 'core, other modes my well require comparison tests to determine which is consistently better. Simon's observation were just casual comments to me in a private Skype call one day, so I will not give further details. Andy K3UK On Fri, Sep 26, 2008 at 9:56 PM, Rick W [EMAIL PROTECTED] wrote: It would also be very interesting to see if the improved MFSK modes in fldigi works better than in other software, especially when affected by lightning static. My informal tests seemed to suggest not much difference, however, if there was any difference, it might suggest that Multipsk was ever so slightly better. When I have done some crude comparisons with actual off air tests between different programs, there is usually not a lot of difference but sometimes there may be slight variations where in some modes there will certain characters that are correctly displayed in one program, yet other characters are correct in the other program. Thus it is often a wash (no significant total difference). It did seem that Multipsk had the edge in some of my testing and when I mentioned this to an on the air contact, the other ham was adamant that his testing overwhelmingly showed that HRD/DM780 was the best by far. Sound card calibration differences perhaps? 73, Rick, KV9U Da
[digitalradio] MT63 Sked
All, I'll be QRV on 14106.0 MT63 / 1K this evening at 2200z. Tony, K2MO
RE: [digitalradio] MT63 Sked
I will also be listening. Dial Frequency 14106.0 USB 1KHz Bandwidth Long Interleave Center Frequency 14107.0 RX/TX Start Frequency 500 Hz RX/TX End Frequency 1500 HZ David KD4NUE -Original Message- From: digitalradio@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Tony Sent: Thursday, September 25, 2008 3:23 PM To: digitalradio@yahoogroups.com Subject: [digitalradio] MT63 Sked All, I'll be QRV on 14106.0 MT63 / 1K this evening at 2200z. Tony, K2MO
Re: [digitalradio] MT63 freq ?
Thanks for the return comments, Tony, and especially all your work in helping us understand these modes better. I have been looking at the data and comparing baud rate which directly relates to the length of symbol and I suspect that many of what we thought of as the most sensitive modes may, depending upon design, work poorly with anything other than calm ionospheric conditions. The MT-63 minimum S/N varies considerably depending upon the width of the signal which is how I came up with the comparison. Because of the redundancy in MT-63 you do get amazing ability to withstand what would otherwise be an obliterated signal. But the price is a very wide bandwidth mode that unfortunately causes QRM too. Imagine if everyone who is using PSK31 switched over to 1K or 2K MT-63. It would be very difficult to operate in the narrow area we have for text digital modes. I try and use only 500 Hz and narrower modes that I consider to be appropriate for HF use, unless the bands are severely disturbed and there are few other stations on at the time. Do you or any other group members have any experiences with comparing the lightning static abilities of MT-63 (various widths) to THOR and the new MFSK modes that are designed into the fldigi program? I did a recent comparison of MFSK16 on fldigi and Multipsk but found roughly the same results, even on very noisy circuits. I plan to do more testing. Does anyone know the difference between MFSK31 and MFSK32? THOR appears to be Domino EX with FEC. How does this compare to Multipsk's Domino EX/FEC? Are they similar but too different to intercommunicate? Finally, Tony, do you think that you could eventually do additional testing to measure what parameters are the cut off point for the various modes? I don't know enough about ionospheric disturbances to know if you can only have Doppler (such as polar flutter) without having multipath at the same time. I seems reasonable that you might have one or the other, but most times (as you have tested) you have some of each. This would be a rather large undertaking but it seems to me that it would be very valuable to know just how the modes drop off for various levels of Doppler and multipath. So you would know that 5 msec is the most you can handle for a given mode, or 3 Hz Doppler. And then to make it even more complicated, where is the drop off point for various combinations? Is this something you could do at some future time? That way, we would have even more revealing comparison of modes and what they can and can not do under increasing difficult conditions. 73, Rick, KV9U Tony wrote: Rick, The reason that I use various modes is to discover those that work the best for most conditions on a given band and maintain a reasonable throughput I agree. Knowing which modes perform well when conditions deteriorate is helpful. I complied the digital mode HF simulations for that reason. The MT-63 mode seems well suited for moderate speed (50 to 200 wpm) under conditions with periodic interference where a part of the data is obliterated The 1K mode does seem to recover well from lightning static and prints well when QRM'd. It doesn't seem to mind when other MT63 signals overlap by 25% or so either. That's something most digital modes can't do. It needs a much stronger signal than some other modes in order to do this by perhaps 5 to 10 dB The simulator says that MT63 has a minimum SNR of -8db for 100% throughput. That's about 2db less than PSK31 and about 6db less than MFSK16. If you place an RTTY signal over the top of MFSK16 or PSK31 signals, they will stop printing. MT63 will keep going. Of course, it's a much wider mode and has lots of redundancy. isn't it fair to say that MFSK16 is about the best choice for robustness, bandwidth, and speed for keyboarding? I think it is a well balanced mode. I also think it's hard to beat multi-tone FSK modes for robustness. They are much less susceptible to the effects of ionospheric Doppler and multi-path than other modes. They were the only mode types that withstood the 30Hz frequency spread during the high-latitude tests. That's about as brutal as it gets. Or do you find that with stronger signals, the slow version (50 Hz/50 wpm) of MT-63 gets through lightning static and QRM better than even the new MFSK versions designed into the fldigi program? Is there a way to simulate this with the software tests? I've tried to simulate lightning static by mixing real QRN with digital mode audio, but it did not work out well. I think a better approach might be to remove short segments of signal to simulate the type of heavy static crashes that would obliterate the signal entirely. It's still missing the AGC capture effect, but it should tell something about mode recovery after a drop-out. Tony, K2MO Simulation: High Latitude Disturbed Path delay: 7ms Frequency
Re: [digitalradio] MT63 freq ?
Rick W wrote: I don't know enough about ionospheric disturbances to know if you can only have Doppler (such as polar flutter) without having multipath at the same time. The only way that comes to my mind that you can get rid of multipath is by just receiving a single ray. To achieve it, a working frequency for a given path geometry between two stations might be chosen for a limited period. That is tricky and sadly, not practical, being a moving target. The practical solution is to use the Optimum Working Frequency, conventionally 85% of the MUF, but that might allow some multipath to propagate. When you must reach more than one station, at different distances, you certainly must allow multipath to exist as well. I seems reasonable that you might have one or the other, but most times (as you have tested) you have some of each. The boundaries between ionospheric regions are always shaky, and contracting or expanding around the planet, so, most of the time, some Doppler, even slight and slow, is unavoidable. 73, Jose, CO2JA
Re: [digitalradio] MT63 freq ?
Tony, last week there was MT63 activity on 14109 but 14106 also seems to have been used. Andy K3UK Thanks for passing that along Andy. Spot history does seem to be a pretty good indicator of mode activity. I guess it's safe to assume that only a small percentage of MT63 activity gets spotted so there's still hope ; ) Seems a shame to waste the work Mr. Jalocha put into the mode. Not exactly spectrum friendly, but it does have it's place. It's certainly more effective than other modes when static crashes and multipath become a problem. Tony, K2MO
Re: [digitalradio] MT63 freq ?
Hi Tony Well I am still around and when we get some conditions back again so that a qso is possible you will find me on mt63 again on the old frequency. Les VK2DSG That would be nice Les. I've been hearing VK occasionally on 20 meters around 2200z on both the long and short path. Wonder if that's about the time the digital SSTV was reported? I have more free time these days so I'll be monitoring. Thanks, Tony, K2MO - Original Message - From: Leskep [EMAIL PROTECTED] To: digitalradio@yahoogroups.com Sent: Saturday, September 13, 2008 6:54 AM Subject: Re: [digitalradio] MT63 freq ? Hi Tony Well I am still around and when we get some conditions back again so that a qso is possible you will find me on mt63 again on the old frequency - I see the sun spot number has been up to 12 over the last day or so so there could at last be an upward trend Was some reports here today of some transmissions copied on EasyPal from the US so maybe things will look up soon Regards Les VK2DSG From: Tony Sent: Saturday, September 13, 2008 7:03 PM To: digitalradio@yahoogroups.com Subject: Re: [digitalradio] MT63 freq ? John, 14,109.5 still being used for MT63? Activity is not what it once was, but I still catch the occasional QSO now and then. I used to have regular QSO's with VK2DSG on 20 meters around the time IZ8BLY released his MT63 software. The mode had a good following for several years. Let me know when you're QRV John. Can sked with you this weekend. The mode is certainly robust; does very well with static crashes and QRM. Tony -K2MO - Original Message - From: John Becker, WØJAB [EMAIL PROTECTED] To: digitalradio@yahoogroups.com Sent: Friday, September 12, 2008 2:37 PM Subject: [digitalradio] MT63 freq ? 14,109.5 still being used for MT63?
RE: [digitalradio] MT63
Indeed it has, but it was a great 18 years! Tom K6TGT Tom, good seeing you here. It has been a long time since Wildcat BBS days. David KD4NUE
Re: [digitalradio] MT63 freq ?
John, 14,109.5 still being used for MT63? Activity is not what it once was, but I still catch the occasional QSO now and then. I used to have regular QSO's with VK2DSG on 20 meters around the time IZ8BLY released his MT63 software. The mode had a good following for several years. Let me know when you're QRV John. Can sked with you this weekend. The mode is certainly robust; does very well with static crashes and QRM. Tony -K2MO - Original Message - From: John Becker, WØJAB [EMAIL PROTECTED] To: digitalradio@yahoogroups.com Sent: Friday, September 12, 2008 2:37 PM Subject: [digitalradio] MT63 freq ? 14,109.5 still being used for MT63?
Re: [digitalradio] MT63 freq ?
Tony, last week there was MT63 activity on 14109 but 14106 also seems to have been used this northern hemisphere summer . SP9MRP 14109.0 SP9MRP CQ MT63 1625 07 Sep YL2CA 14109.5 E73BLMT63 NEBOJSA PRIJEDOR 1319 12 Aug F5JQF 14105.5 F5JQFMT63 1859 25 Jun UA0AV 7035.0 RA3ZSE MT63 ANATOLY 1713 01 Jun VE3OIJ 10143.5 VE3OIJ MT63 500 Hz 0015 24 May F5JQF-@14106.0 F5JQFMT63 CQ CQ CQ . 1613 18 May F5JQF 14106.0 F5JQFMT63 CQ CQ CQ .. 1613 18 May SP3AMZ 14106.0 SP3AMZ MT63 CQ 0812 15 May SP3AMZ-@ 14106.0 SP3AMZ MT63 CQ 0812 15 May F5JQF 14106.0 UR5WCQ MT63 Pavel 0804 15 May F5JQF-@14106.0 UR5WCQ MT63 Pavel 0804 15 May F5JQF 14106.0 F5JQFMT63 CQ CQ CQ CQ ... 0754 15 May F5JQF-@14106.0 F5JQFMT63 CQ CQ CQ CQ 0754 15 May F5JQF 14108.5 F5JQFMT63 CQ CQ CQ ... 0828 12 May F5JQF-@14108.5 F5JQFMT63 CQ CQ CQ ... 0827 12 May RV6HO 14107.5 F5JQFMT63 1747 11 May RV6HO-@14107.5 F5JQFMT63 1747 11 May F5JQF 14106.7 F5JQFMT63 CQ CQ CQ CQ ... 1723 11 May F5JQF-@14106.7 F5JQFMT63 CQ CQ CQ CQ ... 1723 11 May F5JQF 14106.6 F5JQFMT63 CQ CQ CQ CQ ... 0704 11 May F5JQF-@14106.6 F5JQFMT63 CQ CQ CQ CQ .. 0704 11 May F5JQF 14106.7 F5JQFMT63 CQ CQ CQ .. 0648 10 May F5JQF-@14106.7 F5JQFMT63 CQ CQ CQ .. 0648 10 May F5JQF 14108.0 F5JQFMT63 CQ CQ CQ 1818 09 May F5JQF-@14108.0 F5JQFMT63 CQ CQ CQ 1818 09 May F5JQF 14106.6 F5JQFMT63 CQ CQ CQ ... 1229 09 May F5JQF-@14106.6 F5JQFMT63 CQ CQ CQ ... 1228 09 May F5JQF 14106.0 F5JQFMT63 CQ CQ CQ ... 1828 08 May F5JQF-@14106.0 F5JQFMT63 CQ CQ CQ ... 1828 08 May F5JQF 14106.2 F5JQFMT63 CQ CQ CQ . 0708 08 May F5JQF-@14106.2 F5JQFMT63 CQ CQ CQ . 0708 08 May F5JQF-@14107.6 F5JQFMT63 1922 07 May F5JQF 14107.6 F5JQFMT63 1922 07 May VE3PDC 10143.2 VE3OIJ CQ MT63 2237 01 May F5JQF-@14107.0 F5JQFMT63 CQ CQ 0850 01 May SWL-@ 14106.5 ON3ADMT63 CQ Calling 1340 25 Apr EC1AEU 14109.5 OZ1PMX MT63 599 1805 13 Apr MW3WFF-@ 14088.0 S56EPX good qso Franjo MT63 1000 1640 08 Mar NK7Z-@ 7019.9 TEST SPOTMT63 0431 28 Jan SWL-@ 14108.5 I1VPJMT63 1550 19 Jan SWL-@ 14108.5 I1VPJMT63 1110 19 Jan SWL-@ 14108.5 I1VPJMT63 1419 18 Jan OZ1PMX-@3582.1 RA6FCU MT63 1000/long 0254 15 Jan SWL-@ 28129.5 I1VPJMT63 1109 13 Jan SWL-@ 14109.5 I1VPJMT63 0633 13 Jan SP3AMZ-@ 14109.5 SP3AMZ MT63 1000 Hz 1017 12 Jan SWL-@ 14109.5 I1VPJMT63 0951 12 Jan RW9SZ-@14110.5 RW9SZCQ MT63 0913 12 Jan SWL-@ 14109.5 I1VPJMT63 0713 12 Jan UA0AV 14071.1 JT1KAA Pse don`t used MT63 this freq 0616 07 Jan UA0AV 14071.5 JT1KAA ENK u know MT63 FRQ? 0441 07 Jan CT1EUB 14066.0 CQ mt63 1015 06 Jan LU8EKC 14106.5 LU8EKC calling cq mt63 1655 05 Jan UA0AV 14071.0 JT1DAMT63 ENKHBAYAR ULAANBAATAR 0428 04 Jan On Sat, Sep 13, 2008 at 5:03 AM, Tony [EMAIL PROTECTED] wrote: John, 14,109.5 still being used for MT63? Activity is not what it once was, but I still catch the occasional QSO now and then. I used to have regular QSO's with VK2DSG on 20 meters around the time IZ8BLY released his MT63 software. The mode had a good following for several years. Let me know when you're QRV John. Can sked with you this weekend. The mode is certainly robust; does very well with static crashes and QRM. Tony -K2MO - Original Message - From: John Becker, WØJAB [EMAIL PROTECTED] To: digitalradio@yahoogroups.com Sent: Friday, September 12, 2008 2:37 PM Subject: [digitalradio] MT63 freq ? 14,109.5 still being used for MT63? -- Andy K3UK
Re: [digitalradio] MT63 freq ?
Hi Tony Well I am still around and when we get some conditions back again so that a qso is possible you will find me on mt63 again on the old frequency - I see the sun spot number has been up to 12 over the last day or so so there could at last be an upward trend Was some reports here today of some transmissions copied on EasyPal from the US so maybe things will look up soon Regards Les VK2DSG From: Tony Sent: Saturday, September 13, 2008 7:03 PM To: digitalradio@yahoogroups.com Subject: Re: [digitalradio] MT63 freq ? John, 14,109.5 still being used for MT63? Activity is not what it once was, but I still catch the occasional QSO now and then. I used to have regular QSO's with VK2DSG on 20 meters around the time IZ8BLY released his MT63 software. The mode had a good following for several years. Let me know when you're QRV John. Can sked with you this weekend. The mode is certainly robust; does very well with static crashes and QRM. Tony -K2MO - Original Message - From: John Becker, WØJAB [EMAIL PROTECTED] To: digitalradio@yahoogroups.com Sent: Friday, September 12, 2008 2:37 PM Subject: [digitalradio] MT63 freq ? 14,109.5 still being used for MT63?
Re: [digitalradio] MT63 freq ?
The reason that I use various modes is to discover those that work the best for most conditions on a given band and maintain a reasonable throughput for a specific use. The MT-63 mode seems well suited for moderate speed (50 to 200 wpm) under conditions with periodic interference where a part of the data is obliterated, but enough gets through for solid printing. It needs a much stronger signal than some other modes in order to do this by perhaps 5 to 10 dB and to get the higher speed (200 wpm) it needs a much wider footprint (2000 Hz) than most other digital modes. Tuning can be difficult as signals get weaker because the waterfall pattern starts to look like background noise. For casual QSO use, it seems to me that a speed of around 40 wpm, which is a common speed for the narrow (PSK31) and relatively narrow (MFSK16) modes works well for most hams. When conditions get more difficult, as long as the signals are not too weak, some of the Olivia modes may be the best choice if you can tolerate the slower throughput. Based on K2MO's tests and other hams practical on air experience, isn't it fair to say that MFSK16 is about the best choice for robustness, bandwidth, and speed for keyboarding? When conditions allow there are now a number of additional MFSK baud rates, such as used with NBEMS. The main difficulty is accurate tuning, but MFSK does have a mark position during idle, that you can line your cursor with to get close to the lock in frequency. Or do you find that with stronger signals, the slow version (50 Hz/50 wpm) of MT-63 gets through lightning static and QRM better than even the new MFSK versions designed into the fldigi program? Is there a way to simulate this with the software tests? 73, Rick, KV9U
Re: [digitalradio] MT63 freq ?
Good deal Tony. I will be in out of the shack all weekend but can park the rig on say 14,106.00 1KZ long and see what happens. Trying to get ready for a DOWNPOUR from IKE. They said on last nights news that we very well may get 6.5 + inches of rain. John, W0JAB
[digitalradio] MT63
I think you will find more activity than most people suspect. Every Tuesday and Thursday the Mississippi Digital Net meets passing practice traffic and real traffic. It meets at 1900 local. I will have to post the freqs on another message. There is also a Michigan net, and one from Minnesota that I am aware of. Watch for future posts with times and freqs. Don Rand KA5DON Mississippi
RE: [digitalradio] MT63
And of course Navy MARS has been using this as the primary means for years in local/regional nets Lester B Veenstra MØYCM K1YCM [EMAIL PROTECTED] [EMAIL PROTECTED] [EMAIL PROTECTED] US Postal Address: PSC 45 Box 781 APO AE 09468 USA UK Postal Address: Dawn Cottage Norwood, Harrogate HG3 1SD, UK Telephones: Office: +44-(0)1423-846-385 Home: +44-(0)1943-880-963 Guam Cell: +1-671-788-5654 UK Cell: +44-(0)7716-298-224 US Cell: +1-240-425-7335 Jamaica: +1-876-352-7504 This e-mail and any documents attached hereto contain confidential or privileged information. The information is intended to be for use only by the individual or entity to whom they are addressed. If you are not the intended recipient or the person responsible for delivering the e-mail to the intended recipient, be aware that any disclosure, copying, distribution or use of the contents of this e-mail or any documents attached hereto is prohibited. _ From: digitalradio@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Don Rand Sent: Saturday, September 13, 2008 4:38 PM To: digitalradio@yahoogroups.com Subject: [digitalradio] MT63 I think you will find more activity than most people suspect. Every Tuesday and Thursday the Mississippi Digital Net meets passing practice traffic and real traffic. It meets at 1900 local. I will have to post the freqs on another message. There is also a Michigan net, and one from Minnesota that I am aware of. Watch for future posts with times and freqs. Don Rand KA5DON Mississippi
RE: [digitalradio] MT63
As does the USCG AUX HF Contigency Comms Network. Tom, k6tgt k6cyc sysop And of course Navy MARS has been using this as the primary means for years in local/regional nets Lester B Veenstra MØYCM K1YCM [EMAIL PROTECTED] [EMAIL PROTECTED] [EMAIL PROTECTED] US Postal Address: PSC 45 Box 781 APO AE 09468 USA UK Postal Address: Dawn Cottage Norwood, Harrogate HG3 1SD, UK Telephones: Office: +44-(0)1423-846-385 Home: +44-(0)1943-880-963 Guam Cell: +1-671-788-5654 UK Cell: +44-(0)7716-298-224 US Cell: +1-240-425-7335 Jamaica: +1-876-352-7504 This e-mail and any documents attached hereto contain confidential or privileged information. The information is intended to be for use only by the individual or entity to whom they are addressed. If you are not the intended recipient or the person responsible for delivering the e-mail to the intended recipient, be aware that any disclosure, copying, distribution or use of the contents of this e-mail or any documents attached hereto is prohibited. _ From: digitalradio@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Don Rand Sent: Saturday, September 13, 2008 4:38 PM To: digitalradio@yahoogroups.com Subject: [digitalradio] MT63 I think you will find more activity than most people suspect. Every Tuesday and Thursday the Mississippi Digital Net meets passing practice traffic and real traffic. It meets at 1900 local. I will have to post the freqs on another message. There is also a Michigan net, and one from Minnesota that I am aware of. Watch for future posts with times and freqs. Don Rand KA5DON Mississippi
RE: [digitalradio] MT63
And Army MARS plus Air Force MARS. MT-63 takes a bit more dedication that BPSK-31, and many shy away from it. Calibrating the computer sound card is key to the successful use of MT-63. Tom, good seeing you here. It has been a long time since Wildcat BBS days. David KD4NUE -Original Message- From: digitalradio@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Tom Tcimpidis via PPC Sent: Saturday, September 13, 2008 12:51 PM To: digitalradio@yahoogroups.com Subject: RE: [digitalradio] MT63 As does the USCG AUX HF Contigency Comms Network. Tom, k6tgt k6cyc sysop And of course Navy MARS has been using this as the primary means for years in local/regional nets Lester B Veenstra MØYCM K1YCM [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] com [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] com [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] com US Postal Address: PSC 45 Box 781 APO AE 09468 USA UK Postal Address: Dawn Cottage Norwood, Harrogate HG3 1SD, UK Telephones: Office: +44-(0)1423-846-385 Home: +44-(0)1943-880-963 Guam Cell: +1-671-788-5654 UK Cell: +44-(0)7716-298-224 US Cell: +1-240-425-7335 Jamaica: +1-876-352-7504 This e-mail and any documents attached hereto contain confidential or privileged information. The information is intended to be for use only by the individual or entity to whom they are addressed. If you are not the intended recipient or the person responsible for delivering the e-mail to the intended recipient, be aware that any disclosure, copying, distribution or use of the contents of this e-mail or any documents attached hereto is prohibited. _ From:digitalradio@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Don Rand Sent: Saturday, September 13, 2008 4:38 PM To: digitalradio@yahoogroups.com Subject: [digitalradio] MT63 I think you will find more activity than most people suspect. Every Tuesday and Thursday the Mississippi Digital Net meets passing practice traffic and real traffic. It meets at 1900 local. I will have to post the freqs on another message. There is also a Michigannet, and one from Minnesotathat I am aware of. Watch for future posts with times and freqs. Don Rand KA5DON Mississippi
[digitalradio] MT63 freq ?
14,109.5 still being used for MT63?
[digitalradio] MT63 SKED
I need help finding an MT63 QSO. Can anyone direct me to a time and frequency? (I don't belong to MARS but can receive all frequencies.) Thanks and 73, Fred AK5U
[digitalradio] MT63 Hardware Question
I know just about everybody does MT63 on a soundcard. I've done MT63 on a soundcard. The question is: Does anybody know of any hardware (modem type) device out there that does MT63? No soundcard. Dave K7UXO
Re: [digitalradio] MT63 Hardware Question
To answer that in one word, no. Ain't going to happen. The reason so so many use the sound card modes right now is because they don't have to *buy* some black box to do it. John, W0JAB At 08:49 PM 1/30/2008, you wrote: I know just about everybody does MT63 on a soundcard. I've done MT63 on a soundcard. The question is: Does anybody know of any hardware (modem type) device out there that does MT63? No soundcard. Dave K7UXO
Re: [digitalradio] MT63 Hardware Question
The EVM56002 - I have one sitting here - not been used since the soundcard programs became available Just type in EVM 56002 to Google Think I still have all of the old software as well Les VK2DSG From: David McGinnis Sent: Thursday, January 31, 2008 1:49 PM To: digitalradio@yahoogroups.com Subject: [digitalradio] MT63 Hardware Question I know just about everybody does MT63 on a soundcard. I've done MT63 on a soundcard. The question is: Does anybody know of any hardware (modem type) device out there that does MT63? No soundcard. Dave K7UXO
Re: [digitalradio] MT63
Dave Season's Greetings How about at 0230 for six days begging tomorrow at 7034.8 KHz long path 500/16 MT63 73 Omar YK1AO - Original Message - From: Dave To: digitalradio@yahoogroups.com Sent: Thursday, December 29, 2005 9:04 PM Subject: [digitalradio] MT63 I am looking for some folks that work MT63. What are the popular frequencies (I have a General ticket) and times of day? Are there any nets?ThanksDave, K7PDW Need a Digital mode QSO? Connect to telnet://208.15.25.196/ Other areas of interest: The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/ Looking for digital mode software? Check the quick commerical free link below http://www.obriensweb.com/digimodes.html SPONSORED LINKS Ham radio Craft hobby Hobby and craft supply YAHOO! GROUPS LINKS Visit your group "digitalradio" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [digitalradio] MT63
Dave, I would call CQ on 14109.5 kHz. The normal operating mode is 1 KHz bandwidth and long interleave. I will hang out there today and listen for you. 73, Mark N5RFX At 01:04 PM 12/29/2005, you wrote: I am looking for some folks that work MT63. What are the popular frequencies (I have a General ticket) and times of day? Are there any nets? Thanks Dave, K7PDW Need a Digital mode QSO? Connect to telnet://208.15.25.196/ Other areas of interest: The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/http://groups.yahoo.com/group/themixwgroup/ Looking for digital mode software? Check the quick commerical free link below http://www.obriensweb.com/digimodes.htmlhttp://www.obriensweb.com/digimodes.html -- YAHOO! GROUPS LINKS * Visit your group http://groups.yahoo.com/group/digitalradiodigitalradio on the web. * * To unsubscribe from this group, send an email to: * mailto:[EMAIL PROTECTED][EMAIL PROTECTED] * * Your use of Yahoo! Groups is subject to the http://docs.yahoo.com/info/terms/Yahoo! Terms of Service. -- Yahoo! Groups Sponsor ~-- Get fast access to your favorite Yahoo! Groups. Make Yahoo! your home page http://us.click.yahoo.com/dpRU5A/wUILAA/yQLSAA/ELTolB/TM ~- Need a Digital mode QSO? Connect to telnet://208.15.25.196/ Other areas of interest: The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/ Looking for digital mode software? Check the quick commerical free link below http://www.obriensweb.com/digimodes.html Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/digitalradio/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [digitalradio] MT63
SSB carrier freq or center of MT63 signal = 14109.5 ? Les K1YCM/3 -Original Message- From: digitalradio@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Mark Miller Sent: Friday, December 30, 2005 6:24 AM To: digitalradio@yahoogroups.com Subject: Re: [digitalradio] MT63 Dave, I would call CQ on 14109.5 kHz. The normal operating mode is 1 KHz bandwidth and long interleave. I will hang out there today and listen for you. 73, Yahoo! Groups Sponsor ~-- Get fast access to your favorite Yahoo! Groups. Make Yahoo! your home page http://us.click.yahoo.com/dpRU5A/wUILAA/yQLSAA/ELTolB/TM ~- Need a Digital mode QSO? Connect to telnet://208.15.25.196/ Other areas of interest: The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/ Looking for digital mode software? Check the quick commerical free link below http://www.obriensweb.com/digimodes.html Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/digitalradio/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [digitalradio] MT63
SSB Carrier Freq. The MT63 center freq is 14110.5 73, Mark N5RFX At 03:23 PM 12/30/2005, you wrote: SSB carrier freq or center of MT63 signal = 14109.5 ? Les K1YCM/3 -Original Message- From: digitalradio@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Mark Miller Sent: Friday, December 30, 2005 6:24 AM To: digitalradio@yahoogroups.com Subject: Re: [digitalradio] MT63 Dave, I would call CQ on 14109.5 kHz. The normal operating mode is 1 KHz bandwidth and long interleave. I will hang out there today and listen for you. 73, Need a Digital mode QSO? Connect to telnet://208.15.25.196/ Other areas of interest: The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/http://groups.yahoo.com/group/themixwgroup/ Looking for digital mode software? Check the quick commerical free link below http://www.obriensweb.com/digimodes.htmlhttp://www.obriensweb.com/digimodes.html -- YAHOO! GROUPS LINKS * Visit your group http://groups.yahoo.com/group/digitalradiodigitalradio on the web. * * To unsubscribe from this group, send an email to: * mailto:[EMAIL PROTECTED][EMAIL PROTECTED] * * Your use of Yahoo! Groups is subject to the http://docs.yahoo.com/info/terms/Yahoo! Terms of Service. -- Yahoo! Groups Sponsor ~-- Get fast access to your favorite Yahoo! Groups. Make Yahoo! your home page http://us.click.yahoo.com/dpRU5A/wUILAA/yQLSAA/ELTolB/TM ~- Need a Digital mode QSO? Connect to telnet://208.15.25.196/ Other areas of interest: The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/ Looking for digital mode software? Check the quick commerical free link below http://www.obriensweb.com/digimodes.html Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/digitalradio/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[digitalradio] MT63
I am looking for some folks that work MT63. What are the popular frequencies (I have a General ticket) and times of day? Are there any nets? Thanks Dave, K7PDW Yahoo! Groups Sponsor ~-- Get fast access to your favorite Yahoo! Groups. Make Yahoo! your home page http://us.click.yahoo.com/dpRU5A/wUILAA/yQLSAA/ELTolB/TM ~- Need a Digital mode QSO? Connect to telnet://208.15.25.196/ Other areas of interest: The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/ Looking for digital mode software? Check the quick commerical free link below http://www.obriensweb.com/digimodes.html Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/digitalradio/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[digitalradio] MT63 / Olivia tonight
All: Available this eveningforMT63 / Olivia skeds --Friday nighteast coast time (Saturday UTC). 73, Tony KT2Q The K3UK DIGITAL MODES SPOTTING CLUSTER AT telnet://208.15.25.196/ Yahoo! Groups Links To visit your group on the web, go to:http://groups.yahoo.com/group/digitalradio/ To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[digitalradio] MT63 / Olivia tonight
All: Available this eveningforMT63 / Olivia skeds starting around 09:00pm east coast time Thursday night (01:00Z Friday UTC time ). 73, Tony KT2Q The K3UK DIGITAL MODES SPOTTING CLUSTER AT telnet://208.15.25.196/ Yahoo! Groups Links To visit your group on the web, go to:http://groups.yahoo.com/group/digitalradio/ To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re : [digitalradio] MT63 Q's pse
All: At the keys as of 02:00z -- QRV on 14109.5 MT63. Can QSY to 80, 40 and 30 meters. 73 Tony KT2Q The K3UK DIGITAL MODES SPOTTING CLUSTER AT telnet://208.15.25.196/ Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/digitalradio/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: Re : [digitalradio] MT63 Q's pse
--- In digitalradio@yahoogroups.com, KT2Q [EMAIL PROTECTED] wrote: All: At the keys as of 02:00z -- QRV on 14109.5 MT63. Can QSY to 80, 40 and 30 meters. 73 Tony KT2Q I'm on 7090 now The K3UK DIGITAL MODES SPOTTING CLUSTER AT telnet://208.15.25.196/ Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/digitalradio/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[digitalradio] MT63 part of the Digi Pentathlon
Hello digi op's, 20.05.2005 1800-2400 UTC you have good chance to get more QSO's on this very nice but exotic mode - MT63 working conditions - USB 500Hz long interleave on all (10-160m) bands exclude WARC. Hope to meet you! Full info about Pentathlon and Digital QSO Club membership www.dqso.nete-mail: [EMAIL PROTECTED] Next stage of a mode - Hellschreiber - 27.05.2005 1800-2400 UTC -- Best regards, Vyacheslav-RW3AA mailto:[EMAIL PROTECTED] The K3UK DIGITAL MODES SPOTTING CLUSTER AT telnet://208.15.25.196/ Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/digitalradio/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
