[digitalradio] Re: The Basics On WINMOR

[Andrew O'Brien]

Thanks to all those that responded.  I installed WINMOR this evening
and reacquainted myself with Packlink.  I think I have "got the
basics" now.  It will be fun when a RMS is available to connect to an
try WINMOR under HF conditions.

Andy K3UK
k...@winlink.org  :>)

[digitalradio] Re: on another note

[Graham]

The 50 baud may of had something to do with sync speed of the motors 
as uk mains is 50 Hz , the land based (GPO)  telex machines ran at 50 
baud , but the navy used 75 bauds .ship a/c 60 Hz . I did have a 
creed 75 telly printer and 3 sets of gears , 75, 50, 45.45 baud , 
with the 240v/50hz sync ac motor it was noise free , electricslly  
that was !

G .. 



--- In digitalradio@yahoogroups.com, "W5XR"  wrote:
>
> Very interesting bit of history.  I had to ask, as I used some of 
that old
> equipment back in the 50's.
> Thanks. 
>  
> Bob, W5XR
> 
> 
>   _  
> 
> From: digitalradio@yahoogroups.com 
[mailto:digitalra...@yahoogroups.com] On
> Behalf Of jhaynesatalumni
> Sent: Thursday, February 26, 2009 3:04 PM
> To: digitalradio@yahoogroups.com
> Subject: [digitalradio] Re: on another note
> 
> 
> 
> --- In digitalradio@ 
> yahoogroups.com, "W5XR"  wrote:
> >
> > I'm asking. :)
> > 
> > Bob, W5XR.
> 
> O.K.
> 
> For START-STOP synchronization to work the receiving shaft (selector
> or distributor) has to stop between characters. The Morkrum Co.
> (ancestor of Teletype Corp.) had the sending and receiving 
distributor
> shafts running at different speeds, so the receiving distributor
> completed its rotation part way through the STOP pulse and was
> held there until the next START pulse. the STOP pulse was the
> same length as all the others, so it was 7.0 unit code.
> 
> Western Electric had built some teleprinters of their own, and
> in theirs the transmitting and receiving distributors were on the
> same shaft. So to give the receiver a chance to stop they had to
> stop the transmitter between characters. They did this by adding
> a relay to operate the transmitting distributor clutch. At the
> speed they were running at the time, something like 45 wpm,
> the relay added a delay in milliseconds that was equal to 0.42 of
> a pulse duration.
> 
> When Western Electric discontinued making their own teleprinters
> and started buying from Morkrum they insisted on interoperability
> with the W.E. machines. Morkrum didn't want to use a relay in
> the transmitter clutch, so they simply elongated the STOP segment
> on the transmitting distributor to 1.42 times the length of the
> other segments and changed the shaft speed to keep the pulse
> duration the same. So we got 7.42 code; and this continued as
> speeds were increased and after the Western Electric equipment
> had all been phased out.
> 
> Western Union didn't have the problem of interoperability with
> old Western Electric designs, so they insisted on 7.0 unit code
> because of the slightly higher speed that gives, roughly 65 wpm
> instead of 60. For many years Teletype had to make equipment
> that could transmit either way, by supplying the appropriate
> transmitter cam and gear. The printers all had no trouble copying
> 7.0 unit code.
> 
> At 100 wpm, 7.42 unit code gives a speed of 74.2 baud. At some
> point the U.S. military decided to round that up to 75 baud,
> and then to standardize on speeds that are 75 multiplied by a
> power of two, so we got 75,150, 300, 600, 1200, etc. for our
> terminals and modems.
> 
> For some reason Europe standardized on 50 baud and 7.50 unit code;
> I can only assume that some equipment manufacturer had trouble
> with a unit-length STOP pulse and needed extra time to get the
> receiver stopped.
>

[digitalradio] NZ4O Daily LF/MF/HF/6M Frequency Radiowave Propagation Forecast #2009-05

[nz4o]

The NZ4O Daily LF/MF/HF/6M Frequency Radiowave Propagation Forecast #2009-05 
has been published on Thursday 02/26/2009 at 2000 UTC, valid  UTC 
Saturday 02/28/2009 through 2359 UTC Friday 03/01/2009 at 
http://www.kn4lf.com/kn4lf6.htm .



73 & GUD DX,

Thomas F. Giella, NZ4O

Lakeland, FL, USA

n...@arrl.net



NZ4O Daily Solar Space Weather & Geomagnetic Data Archive: 
http://www.kn4lf.com/kn4lf5.htm

NZ4O Daily LF/MF/HF/6M Frequency Radiowave Propagation Forecast & Archive: 
http://www.kn4lf.com/kn4lf6.htm

NZ4O 160 Meter Radio Propagation Theory Notes: 
http://www.kn4lf.com/kn4lf8.htm

LF/MF/HF/VHF Frequency Radiowave Propagation Email Reflector: 
http://montreal.kotalampi.com/mailman/listinfo/kn4lf
Harmful Man Induced Climate Change (Global Warming) Refuted: 
http://www.kn4lf.com/globalwarminglie.htm

RE: [digitalradio] Re: on another note

[W5XR]

Very interesting bit of history.  I had to ask, as I used some of that old
equipment back in the 50's.
Thanks. 
 
Bob, W5XR


  _  

From: digitalradio@yahoogroups.com [mailto:digitalra...@yahoogroups.com] On
Behalf Of jhaynesatalumni
Sent: Thursday, February 26, 2009 3:04 PM
To: digitalradio@yahoogroups.com
Subject: [digitalradio] Re: on another note



--- In digitalradio@ 
yahoogroups.com, "W5XR"  wrote:
>
> I'm asking. :)
> 
> Bob, W5XR.

O.K.

For START-STOP synchronization to work the receiving shaft (selector
or distributor) has to stop between characters. The Morkrum Co.
(ancestor of Teletype Corp.) had the sending and receiving distributor
shafts running at different speeds, so the receiving distributor
completed its rotation part way through the STOP pulse and was
held there until the next START pulse. the STOP pulse was the
same length as all the others, so it was 7.0 unit code.

Western Electric had built some teleprinters of their own, and
in theirs the transmitting and receiving distributors were on the
same shaft. So to give the receiver a chance to stop they had to
stop the transmitter between characters. They did this by adding
a relay to operate the transmitting distributor clutch. At the
speed they were running at the time, something like 45 wpm,
the relay added a delay in milliseconds that was equal to 0.42 of
a pulse duration.

When Western Electric discontinued making their own teleprinters
and started buying from Morkrum they insisted on interoperability
with the W.E. machines. Morkrum didn't want to use a relay in
the transmitter clutch, so they simply elongated the STOP segment
on the transmitting distributor to 1.42 times the length of the
other segments and changed the shaft speed to keep the pulse
duration the same. So we got 7.42 code; and this continued as
speeds were increased and after the Western Electric equipment
had all been phased out.

Western Union didn't have the problem of interoperability with
old Western Electric designs, so they insisted on 7.0 unit code
because of the slightly higher speed that gives, roughly 65 wpm
instead of 60. For many years Teletype had to make equipment
that could transmit either way, by supplying the appropriate
transmitter cam and gear. The printers all had no trouble copying
7.0 unit code.

At 100 wpm, 7.42 unit code gives a speed of 74.2 baud. At some
point the U.S. military decided to round that up to 75 baud,
and then to standardize on speeds that are 75 multiplied by a
power of two, so we got 75,150, 300, 600, 1200, etc. for our
terminals and modems.

For some reason Europe standardized on 50 baud and 7.50 unit code;
I can only assume that some equipment manufacturer had trouble
with a unit-length STOP pulse and needed extra time to get the
receiver stopped.

[digitalradio] Re: on another note

[jhaynesatalumni]

--- In digitalradio@yahoogroups.com, "W5XR"  wrote:
>
> I'm asking. :)
>  
> Bob, W5XR.

O.K.

For START-STOP synchronization to work the receiving shaft (selector
or distributor) has to stop between characters.  The Morkrum Co.
(ancestor of Teletype Corp.) had the sending and receiving distributor
shafts running at different speeds, so the receiving distributor
completed its rotation part way through the STOP pulse and was
held there until the next START pulse.  the STOP pulse was the
same length as all the others, so it was 7.0 unit code.

Western Electric had built some teleprinters of their own, and
in theirs the transmitting and receiving distributors were on the
same shaft.  So to give the receiver a chance to stop they had to
stop the transmitter between characters.  They did this by adding
a relay to operate the transmitting distributor clutch.  At the
speed they were running at the time,  something like 45 wpm,
the relay added a delay in milliseconds that was equal to 0.42 of
a pulse duration.

When Western Electric discontinued making their own teleprinters
and started buying from Morkrum they insisted on interoperability
with the W.E. machines.  Morkrum didn't want to use a relay in
the transmitter clutch, so they simply elongated the STOP segment
on the transmitting distributor to 1.42 times the length of the
other segments and changed the shaft speed to keep the pulse
duration the same.  So we got 7.42 code; and this continued as
speeds were increased and after the Western Electric equipment
had all been phased out.

Western Union didn't have the problem of interoperability with
old Western Electric designs, so they insisted on 7.0 unit code
because of the slightly higher speed that gives, roughly 65 wpm
instead of 60.  For many years Teletype had to make equipment
that could transmit either way, by supplying the appropriate
transmitter cam and gear.  The printers all had no trouble copying
7.0 unit code.

At 100 wpm, 7.42 unit code gives a speed of 74.2 baud.  At some
point the U.S. military decided to round that up to 75 baud,
and then to standardize on speeds that are 75 multiplied by a
power of two, so we got 75,150, 300, 600, 1200, etc. for our
terminals and modems.

For some reason Europe standardized on 50 baud and 7.50 unit code;
I can only assume that some equipment manufacturer had trouble
with a unit-length STOP pulse and needed extra time to get the
receiver stopped.

[digitalradio] VHF Digital

[Bev & Jerry Chambers]

Anyone in southern California or Arizona operate PSK-31 or other digital on 2 
Meters ?

Jerry - W6LQR

Save on Digital Photography Serivces and Hardware. Click Now!
http://thirdpartyoffers.juno.com/TGL2141/fc/BLSrjpTDvmSLYjKU8rurxf2qUyVNjqyzz64ijft3WEOElcmaf6e3qsKlEYo/

Re: [digitalradio] Re: Transceiver Mode Setting - Digital or USB

[kh6ty]

> Can I use Flarq directly on Windows???

> 73

> Omar YK1AO


Yes, it works under Windows XP or VISTA, or Linux.

73, Skip KH6TY

[digitalradio] Re: Transceiver Mode Setting - Digital or USB

[Shabsigh]

Can I use Flarq directly on Windows???

73

Omar YK1AO

Re: [digitalradio] Where are we with Digital Voice ?

[Tony]

Andy,

There's been some Windrm activity with the alternative codecs. Voice quality is 
somewhat better than the non-melp version of FDMDV but it's not as good 
sensitivity-wise. As you know, it takes a pretty good signal-to-noise ratio for 
Windrm to decode well. 

Conditions on 20 meters have been quite good lately so hopefully we'll get more 
check-ins during the weekend net on 14236. Mel is always listening and I'm more 
than happy to sked with anyone on 20 meters. 

Tony - K2MO


- Original Message - 
From: "Andrew O'Brien" 
To: 
Sent: Tuesday, February 24, 2009 4:54 PM
Subject: [digitalradio] Where are we with Digital Voice ?


> Since the Melp codec issues reared their ugly head, what is happening
> with digital voice these days?  Other than the weekend North American
> 20M net, who else is using it ?  What is the latest software of choice ?
> 
> Andy K3UK
> 
> 
>

[digitalradio] Digital LOTW Triple -Play Fun

[Andrew O'Brien]

I am not sure how many folks here are aware, but the ARRL's "Triple
Play" concept (see  
http://www.arrl.org/news/stories/2008/12/05/10490/ ) and the LOTW sked
page that I set up (  see http://www.obriensweb.com/sked/   click on
LOTW) is turning out to be quite a lot of fun.

The idea is to work all USA states on SSB, CW, and "digital".  I am
not in it to really complete WAS on all three modes , and I have my
WAS-Mixed award already.  However, it is fun to check in to the very
busy sked page and work some of the guys looking for states.  Most of
the guys seem to choose an old mode called "RTTY" for the digital
award with others choosing the old standby , PSK31.  You won't find
anyone wanting to try ALE400 or bursting in to RFSM , but it is fun on
a cold winter evening.  Heck, I even used something called a
microphone to give a couple of guys a needed state !

Check in at http://www.obriensweb.com/sked/   click on LOTW)

Andy

Re: [digitalradio] Re: Russian WW PSK Contest: Начало: 27 февраля 2009 г. в 21:00 UTC February 27, 200

[Gmail - Kevin, Natalia, Stacey & Rochelle]

Andrew, it will accept Russian sent in unicode from your computer.
BTW you are up late :)

Kevin, ZL1KFM.

 
Get Skype and call me for free.


  - Original Message - 
  From: Andrew O'Brien 
  To: digitalradio@yahoogroups.com 
  Sent: Thursday, February 26, 2009 10:11 PM
  Subject: [digitalradio] Re: Russian WW PSK Contest: 
Начало: 27 
февраля 2009 г. в 21:00 
UTC February 27, 200


  -Ooops, I guess Yahoo does not like the original Russian.


  

sparc_nz
Description: Binary data

[digitalradio] Re: Russian WW PSK Contest: Начало: 27 февраля 2009 г. в 21:00 UTC February 27, 200

[Andrew O'Brien]

-Ooops, I guess Yahoo does not like the original Russian.

[digitalradio] Russian WW PSK Contest: Начало: 27 февраля 2009 г. в 21:00 UTC February 27, 200

[Andrew O'Brien]

Please note that PSK 63 AND pSK 125 is allowed in the contest in
addition to PSK31.  Also you must send your log in BOTH ADIF and
Cabrillo format.


"Отчеты 
высылаются 
только в 
электронном 
виде в 
формате Cabrillo и Adif
(требуются 
два файла).
Моды PSK в файле 
cabrillo должны 
быть 
идентифицированы
 следующим 
образом:
BPSK31 - PS;
BPSK63 - PM;
BPSK125 - PO.
Отчет 
отправляют 
не позднее 15 
дней после 
окончания 
теста.Отчеты,
присланные 
после 
указанного 
срока , 
рассматриваются
 только , как
"check log" (для 
контроля).
Желательно 
приложить к 
отчету Ваше 
мнение о 
положении 
соревнований
 и
впечатлениях
 о самих 
соревнованиях."



or..

"Reports send only in the electronic form via  cabrillo and Adif (they
are required two files). Modes PSK in the file of cabrillo must be
identified as follows: BPSK31 - PS; BPSK63 - PM; BPSK125 - PO. Report
is sent not later than 15 days after the ends of contest.IF sent after
the period indicated, they are examined only as " check of log" (for
the control). "



Andy K3UK

Russian WW PSK Contest
Соревнования
 проводятся 
организацией
Московский SSTV 
клуб "MsstvS"
Россия
Начало: 27 
февраля 2009 г. в 21:00 
UTC
Завершение: 28 
февраля 2009 г. в 21:00 
UTC
Российские 
соревнования
 по 
радиосвязи 
на КВ в 
режиме PSK «Russian WW
PSK Contest» 
проводятся в 
соответствии
 с "Правилами 
соревнований
 по
радиоспорту" 
и настоящим 
положением 
ежегодно в 
последнюю 
субботу
февраля с 00.00 до 
23.59 ч. MSK.
Цели и задачи 
соревнований:
- 
популяризация
 цифровых 
видов 
радиолюбительской
 связи в 
России,
- определение 
сильнейших 
спортсменов 
страны,
- повышение 
мастерства 
участников.
Виды 
модуляции: PSK31,63,125
Виды 
модуляции:   PSK
Диапазоны:160 
м, 80 м, 40 м, 20 м, 15 м, 10 м

Contest organized by  Moscow SSTV the club of " MsstvS" Russia
Beginning: On February 27, 2009. at 21:00 OF UTC Completion: On
February 28, 2009. at  21:00 OF UTC  Purpose and the task of the
competitions: - the popularization of the digital forms of radio
amateur's connection in Russia, - the determination of the strongest
athletes of the country, - an increase in the craftsmanship of
participants. Forms of modulation: PSK31,63,125 Forms of modulation:
PSK Ranges in the following bands: 160 m, 80 m, 40 m, 20 m, 15 m, 10 m

[digitalradio] NAQP RTTY 1800Z February 28 to 0600Z, March 1, 2009

[Andrew O'Brien]

NAQP CW/SSB/RTTY Rules
(Revised November 16, 2008)
pdf version of rules

Contest Managers:
CW/SSB - Bruce Horn, WA7BNM (email)
RTTY - Shelby Summerville, K4WW (email)

   1. Eligibility: Any licensed radio amateur may enter.

   2. Object: To work as many North American stations as possible
during the contest period.

   3. North American Station: Defined by the ARRL's DXCC list with the
addition of KH6.

   4. Contest periods:

  January/February 2009 Contests:

  
  RTTY: 1800Z February 28 to 0600Z, March 1, 2009 (Last full
weekend in February)

  July/August 2009 Contests:

  RTTY: 1800Z July 18 to 0600Z July 19, 2009 (Third full weekend
in July)