Re: [digitalradio] New emcomm tool now available

2007-10-18 Thread Les Warriner 
Naw, they'd never do that.  Maybe it is because they believe in the 
rule of being of assistance to their fellow man.  After more than 50 
years of emergency service, military, civilian, Amateur, etc., until 
you have walked in our footsteps, watch your insults.


 At 08:16 AM 10/18/2007, you wrote:


Another one harping on about "emergency services" !!!
I wonder if it is because they need to feel important ?
- Original Message -
From: [EMAIL PROTECTED]
To: digitalradio@yahoogroups.com
Sent: Thursday, October 18, 2007 3:13 PM
Subject: [digitalradio] New emcomm tool now available

Software for the Narrow Band Emergency Messaging System (NBEMS), is 
now available for testing. This system maximizes the use of radio 
amateurs for providing emergency communications.


The system works with most soundcard-equipped computers and is 
completely contained on a "Live" CD (EMCpup), based on Puppy Linux 
(2.17), flarq (1.0) and fldigi (2.0), Every effort has been made to 
make the OS transparent to the user, so no Linux experience is 
required.  The system has been in development for the past year and 
can be downloaded and burned to a CD from: 
http://www.w1hkj.com/emcpup.html 
under the link to the CD image. The goal of the NBEMS is just to be 
able to bridge a widescale disaster area of up to 100 miles, without 
any reliance on a centralized repeater network, or mailboxes, and 
use as little space as possible.


NBEMS relies on the more traditional emergency message delivery and 
confirmation system (i.e. in person), by a receiving radio amateur, 
with message delivery by phone, Internet, cellphone SMS, or smoke 
signals, so urgent messages can never lie unnoticed in an email 
inbox. Since there ar e no automatically, or remotely controlled, 
transmissions used, the system can legally be used on any frequency 
where digital communications are allowed, but it is suggested to use 
a range of frequencies where PSK63 activity usually takes place, 
starting 2.5 KHz above the traditional PSK31 areas of operation on 
each band. Just 2.5 KHz of spectrum will be enough space for 25 
PSK63 NBEMS stations, so all stations within range, that are within 
the IF passband of the typical SSB receiver, will be visible 
simultaneously on the waterfall display. As a result, it is simple 
for the station in the disaster area to pick a clear frequency or 
QSY if requested.


PSK63 is fast enough for short messages, but if there are no 
immediately adjacent stations, and conditions permit, wider PSK125 
or PSK250 can be used for increased delivery speed of long messages, 
attachments, or even small color images. The operator in the 
disaster zone simply transmits a unique beacon signal (which contain 
s his callsign). When a station outside the disaster zone (also 
equipped with NBEMS) notices the beacon signal and replies, a green 
diamond at each station will indicate when the two stations are 
connected, and the station callsigns will be displayed 
automatically. A beaconing station is easily identified by a unique 
appearance of its signal on the waterfall as a series of "bursts".


Two meters, where there is little QSB compared to HF, is recommended 
as the band of choice for normal emergency messaging in which a 100 
mile range with small, portable, horizontally polarized, antennas is 
sufficient.  In mountainous regions, or over longer distances, using 
larger NVIS antennas on HF can also be used, but sometimes with an 
increased delivery time due to additional automatic repeat requests. 
In either case, using VHF or NVIS HF, once a signal is discernable 
above the noise it will generally stay that way during the 
communication, so that multi-tone, weaker signal modes (which are 
wider and take up much more space), are not needed to fight QSB.


Note that this is *not* an FM system, but a SSB system (for 
increased range) modulated by digital audio, and the convention for 
2m SSB use is upper sideband with horizontally polarized antennas, 
not vertical antennas.


Regular keyboard-to-keyboard, non-emergency communications, where 
error-free messaging is not essential, can be conducted with the 
same software using PSK63 or PSK31 - without using flarq. Many other 
keyboard-to-keyboard digital modes are also included with fldigi, as 
well as a logging program, rig control program, and a geodetic computer.


To activate the NBEMS, the user simply inserts the NBEMS CD in his 
computer, reboots, and follows the instructions under the Emcomm desktop icon.


Please give this system a try, encourage others to do so, and send 
any comments or questions to: [EMAIL PROTECTED] .

& nbsp;
73,

NBEMS Development Team
KH6TY, Skip and W1HKJ, Dave


--
No virus found in this incoming message.
Checked by AVG Free Edition.
Version: 7.5.488 / Virus Database: 269.15.0/1077 - Release Date: 
10/18/2007 09:54



No v

Re: [digitalradio] New emcomm tool now available

2007-10-18 Thread Alan Tindal 
Another one harping on about "emergency services" !!! 
I wonder if it is because they need to feel important ?
  - Original Message - 
  From: [EMAIL PROTECTED] 
  To: digitalradio@yahoogroups.com 
  Sent: Thursday, October 18, 2007 3:13 PM
  Subject: [digitalradio] New emcomm tool now available


  Software for the Narrow Band Emergency Messaging System (NBEMS), is now 
available for testing. This system maximizes the use of radio amateurs for 
providing emergency communications.

  The system works with most soundcard-equipped computers and is completely 
contained on a "Live" CD (EMCpup), based on Puppy Linux (2.17), flarq (1.0) and 
fldigi (2.0), Every effort has been made to make the OS transparent to the 
user, so no Linux experience is required.  The system has been in development 
for the past year and can be downloaded and burned to a CD from: 
http://www.w1hkj.com/emcpup.html under the link to the CD image. The goal of 
the NBEMS is just to be able to bridge a widescale disaster area of up to 100 
miles, without any reliance on a centralized repeater network, or mailboxes, 
and use as little space as possible.
   
  NBEMS relies on the more traditional emergency message delivery and 
confirmation system (i.e. in person), by a receiving radio amateur, with 
message delivery by phone, Internet, cellphone SMS, or smoke signals, so urgent 
messages can never lie unnoticed in an email inbox. Since there ar e no 
automatically, or remotely controlled, transmissions used, the system can 
legally be used on any frequency where digital communications are allowed, but 
it is suggested to use a range of frequencies where PSK63 activity usually 
takes place, starting 2.5 KHz above the traditional PSK31 areas of operation on 
each band. Just 2.5 KHz of spectrum will be enough space for 25 PSK63 NBEMS 
stations, so all stations within range, that are within the IF passband of the 
typical SSB receiver, will be visible simultaneously on the waterfall display. 
As a result, it is simple for the station in the disaster area to pick a clear 
frequency or QSY if requested.
   
  PSK63 is fast enough for short messages, but if there are no immediately 
adjacent stations, and conditions permit, wider PSK125 or PSK250 can be used 
for increased delivery speed of long messages, attachments, or even small color 
images. The operator in the disaster zone simply transmits a unique beacon 
signal (which contain s his callsign). When a station outside the disaster zone 
(also equipped with NBEMS) notices the beacon signal and replies, a green 
diamond at each station will indicate when the two stations are connected, and 
the station callsigns will be displayed automatically. A beaconing station is 
easily identified by a unique appearance of its signal on the waterfall as a 
series of "bursts".
   
  Two meters, where there is little QSB compared to HF, is recommended as the 
band of choice for normal emergency messaging in which a 100 mile range with 
small, portable, horizontally polarized, antennas is sufficient.  In 
mountainous regions, or over longer distances, using larger NVIS antennas on HF 
can also be used, but sometimes with an increased delivery time due to 
additional automatic repeat requests. In either case, using VHF or NVIS HF, 
once a signal is discernable above the noise it will generally stay that way 
during the communication, so that multi-tone, weaker signal modes (which are 
wider and take up much more space), are not needed to fight QSB. 
   
  Note that this is *not* an FM system, but a SSB system (for increased range) 
modulated by digital audio, and the convention for 2m SSB use is upper sideband 
with horizontally polarized antennas, not vertical antennas.
   
  Regular keyboard-to-keyboard, non-emergency communications, where error-free 
messaging is not essential, can be conducted with the same software using PSK63 
or PSK31 - without using flarq. Many other keyboard-to-keyboard digital modes 
are also included with fldigi, as well as a logging program, rig control 
program, and a geodetic computer. 
   
  To activate the NBEMS, the user simply inserts the NBEMS CD in his computer, 
reboots, and follows the instructions under the Emcomm desktop icon.
   
  Please give this system a try, encourage others to do so, and send any 
comments or questions to: [EMAIL PROTECTED] .
  & nbsp;
  73, 

  NBEMS Development Team
  KH6TY, Skip and W1HKJ, Dave


   


--


  No virus found in this incoming message.
  Checked by AVG Free Edition. 
  Version: 7.5.488 / Virus Database: 269.15.0/1077 - Release Date: 10/18/2007 
09:54