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Radio Links 1
BRIDGEND & DISTRICT AMATEUR RADIO CLUB
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"click
here " English to Italian |
click
here " English to
Spanish |
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"click
here " English to French. |
"click
here " English to German. |
Saturday May 10, 2008
D-STAR - Digital Amateur Radio For the
Future
Icom are developing a next generation digital amateur radio
system called the ‘D-STAR’ system. The 'D-STAR' system is now in
basic stage of field tests. This project has been developed in
collaboration with the JARL (Japan Amateur Radio League) and is
also supported by the Japanese Telecommunications
Administration. The 'D-STAR' system provides digitally modulated
voice/data communication and high-speed data access over the
air. The 'D-STAR' system has a close affinity with the Internet,
and we are also researching applications for LMR/PMR usage.
Fundamental plan of “D-STAR” system
The “D-STAR” system offers digital modulation (GMSK). All of the
transmission data including voice and pictures are digitally
encoded. Digitally modulated voice is transmitted at 8kbps and
digital data is transmitted at 128kbps (max.) from terminal to
terminal or a repeater. Furthermore, repeaters are linked up
with 10Mbps in the 10GHz band, providing a multi-site repeater
system. The transceiver has an Ethernet cable port, which
provides direct connection to a PC, router, hub or other network
devices. The digital data is seamlessly transmitted over the
air.
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GB3TC
Berryhill Farm, Kilsyth, Lanarkshire
GB3TC - 10471.30 Tx/10371.30MHz Rx 103.5Hz
(G) Access
GB3TC is a 3cm voice repeater which is
co-sited with GB3CS at Kilsyth. This project, together with a beacon project for
the 23, 13 and 9cm bands (GB3CSB) is designed to stimulate activity on these
higher frequency bands. The project is being independently operated and funded
by local amateurs with support from the CSFMG and the CSFMG technical team.
Click Here to link to Central Scottish FM Group
Welcome to the home of
The Radio Amateurs' Emergency Network
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This web site exists to
promote the work of RAYNET in the UK, provide information
for prospective users of RAYNET's services, act as a link
with the Membership and provide support at all levels. This
is achieved by providing a one-stop resource, tailored to
the needs of each and regularly updated. |
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RMCWEB The
RSGB Repeater Management Committee
Click Here
The Repeater Management Committee (RMC) is a full committee of
the
Radio Society of Great
Britain (RSGB)
This internet site is the ONLY OFFICIAL source of UK Amateur
Repeater Information available on-line. The site is owned and maintained by the
Proposals Manager of the RSGB Repeater Management Committee.
The repeaters are owned and financed by local groups of radio amateurs.
BookMark RMCWEB
European
Repeater Links
Click Here
 Download
Repeater POI files for Tom-Tom GPS system
They cover 70cm, 2m, 6m. g4tsn@gb3in.co.uk
These files have been generated by G4TSN from data from the RMC
web site and are supplied
as is, Click Here for
RMC please let me know if they are found useful.
Or click below to download zip files.
Repeater 6M
- Repeater 2M
- Repeater 70CM
 
Under 'Information for New Members' are a few new menu
items which link to the
Secure online joining & renewal website.
Amateur radio plaques, names, displays... Personalised
and custom made for your shack.
Precision cut Radio Call
Sign displays.
AA Woodcrafts (Isle of Wight)
AA Woodcrafts is a family run
business based in St Helens on the Isle of Wight, We pride ourselves on good old fashioned service and quality.
The reason for this is simple. We want our customers back........not our
products !
If you are not totally satisfied with our product, just return it within 30 days
for a refund.
Welcome, to the Radioworld Online store, the UK No.1 used ham radio equipment
dealer, with a wide variety of products including ham radios, CBs, antennas,
microphones, transceivers, and many accessories, over 5000 items are listed
We are the largest manufacturer of
Amateur, CB, and scanner antennas and accessories in the UK. We also import our
own brand CB radios, coax switches, duplexers, pre-amplifiers, microphones,
triplexers, to list a few as well as 12v mobile and 24v truck products to
compliment the range.
A family run business operating
out of Aberdare South Wales, we are capable of manufacturing aerials on a "one
off" basis at very competitive prices, whilst still able to mass produce if
needed. We offer a mail order facility to make it easier for you to order,
usually with delivery within 48 Hours.
Radio and
Telecommunications throughout the world are co-ordinated by the
International Telecommunications Union (ITU),
a UN body based in Geneva, of which the Amateur Service is part.
The ITU divides the world into 3 regions
for administrative purposes:
Region 1
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Europe, Africa, Middle East, Russian States &
Mongolia
Region 2
- The Americas, Greenland
Region 3
- Australasia, The Pacific Rim & remaining parts of Asia
The International Amateur
Radio Union (IARU)
was formed in 1925 to represent the interests of the Amateur Service and is
organised on very similar lines.
SpaceWeather.com
Science news and
information about the Sun-Earth environment.
Photographer Steve Irvine
of Big Bay, Ontario, took this picture at the onset of the geomagnetic storm on
Oct. 29th:
WB0NNI
- Website
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You can Link to the original WB0NNI scratch built
RF amplifier site. Aside from a new web address, you will notice that a number
of changes have and are still in the process of being made. In an attempt to
make the site more useful, we've increased the number of resources available for
the homebrew design and construction of HF power amplifiers that employ glass
triodes, tetrodes and pentodes (not that we're opposed to solid state amplifiers
that have the look and and feel of a "George Forman Grill" - it's just that
we're partial to equipment that looks like it might actually do something other
than cook weiners at a backyard barbeque). With that said, we remain committed
to our original mission of resurrecting the practical and cultural aspects of
ham radio, including a glimmer of the "tongue-in-cheek" humour, fun and
excitement that has, for so many years, attracted innovators of all ages to the
hobby. |
WELCOME
TO G4NCE's
PRESERVED MILITARY
RADIOS OF THE 40'S AND 50'S...
Radio Museums
Welcome to the British DX Club (BDXC-UK) Web site. This
page contains information about the club and its services.
What Does BDXC-UK Cover?
The BDXC specialises in coverage of all aspects of broadcast DXing - from
searching out distant or difficult-to-hear radio stations to listening to the
major international broadcasters - on the shortwave, mediumwave and VHF/FM
bands. We also have in-depth coverage of UK domestic radio developments as well
as reports on new ways of listening to the radio including digital radio (DRM/DAB),
internet and WorldSpace.
FEATURING OVER 700 AMATEUR RADIO
TOPICS AND OVER 6,000 LINKS
ABBREVIATIONS
TO ZONES
 Yaesu
Amateur Radio Manuals
| This vast manual
collection of over forty years of Yaesu amateur and commercial
radio equipment is brought to you by Geoff Brown G4ICD/GJ4ICD
who has been involved as an engineer and amateur radio operator
for over 40 years on Yaesu equipment.
Over 350 amateur/commercial operating manuals plus
workshop and technical manuals available, scanned and put on CD.
The CDs are mainly in pdf format and include where
possible full colour circuits that show the signal path of both
tx and rx. www.yaesumanuals.com is the
only place in the World where these color manuals are now
obtainable on CD Rom.
Some of these manuals have taken days to scan and provide
the user with printable copies of the original obsolete manual.
Yaesumanuals.com have written permission and
recommendations from Yaesu to reproduce manuals no longer in
current production and have spent years supplying the trade and
end user. In order to maintain Yaesu's integrity each CD manual
is now encrypted, this ensures that you have non tampered copied
files, data cannot be removed or replaced within the pdf file
and it has your own personal signature for your piece of mind.
All files can be printed.
Take a look at the quality and download or click this
sample pdf file. Right click
and save the file to your hard-drive. The sample shows you a
miniature version of a scan. |
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Monthly CD rom
updates are added and should an updated manual become available
then it will be issued to you FREE of charge. All manuals have
un-conditional warranty, that means if it fails then you can
return it for a replacement absolutely free!
Special Yaesu manual editions not usually found in the
public domain are available, these specials were for service
departments.
Click Logo for more information.
This is just one of the special editions, over 230 pages
showing detailed information of the FT101/B/E/EE/EEX, note these
are the non internal digital readout versions, covers all other
versions including USA.
Pay by
PayPal
www.amateurmanuals.co.uk
www.yaesumanuals.com |
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Colossus loses code-cracking race
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By Mark Ward
Technology Correspondent, BBC News website
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An
amateur cryptographer has beaten Colossus in a code-cracking
challenge set up to mark the end of a project to rebuild the
pioneering computer.
The competition saw Colossus return to code-cracking duties
for the first time in more than 60 years.
The team using Colossus managed to decipher the message just
after lunch on 16 November.
But before that effort began Bonn-based amateur Joachim
Schuth revealed he had managed to read the message.
"He has written a suite of software specifically for the
challenge," said Andy Clark, one of the founders of the Trust
for the National Museum of Computing at Bletchley Park where
Colossus is sited.
News of Mr Schuth's success reached Bletchley Park on
Thursday night, said Mr Clark.
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The re-built Colossus
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The target messages, enciphered with a Lorenz S42
machine as used by the German high command, were transmitted by
a team of radio enthusiasts in Paderborn, Germany.
However, radio reception problems throughout the day on
Thursday meant that the British code-cracking team did not get a
full copy of the enciphered message until after 1700 GMT.
"For that all credit must go to Milton Keynes Amateur
Radio Society," said Mr Clark. "They worked tirelessly
yesterday."
A copy of the ciphertext in the messages was loaded onto the
re-built Colossus at 0855 GMT on Friday morning, said Mr Clark.
At 1315 GMT on Friday Colossus managed to work out the
message, he said - though there was a slight delay as two valves
blew just as the final run was being carried out.
"We've got all the wheel settings," said a delighted Mr
Clark, adding that there was spontaneous applause when the
announcement of success was made.
At the same time as Colossus cranked through the messages a
separate team used a virtual Colossus on a laptop to read the
scrambled messages. That too beat Colossus and deciphered the
message mid-morning on Friday.
The ciphertext from the messages will also be
placed on the museum's website so amateur code-crackers who do
not have access to radio can have a go at breaking the signals.
Colossus is widely recognised as being one of the first
recognisably modern computers in that it could be programmed. It
was the size of a small lorry and used more than 2,000 valves.
Tony Sale led the 14-year Colossus re-build project and it
took so long because all 10 Colossus machines were broken up
after the war in a bid to keep their workings secret. When he
started the re-build all Mr Sale had to work with were a few
photographs of the machine.
In its heyday Colossus could break messages in a matter of
hours and, said Mr Sale, proved its worth time and time again by
revealing the details of Germany's battle plans.
"It was extremely important in the build up to D-Day," said
Mr Sale. "It revealed troop movements, the state of supplies,
state of ammunition, numbers of dead soldiers - vitally
important information for the whole of the second part of the
war."
This, and the other information revealed by the
code-cracking effort at Bletchley, helped to shorten the war by
at least 18 months, said Mr Sale.
The Cipher Challenge is also being used to mark the start of
a major fund-raising drive for the fledgling National Museum of
Computing. The museum will be based at Bletchley and Colossus
will form the centre-piece of its exhibits.
Colossus has a place in the history of computing not just
because of the techniques used in its construction.
Many of those that helped build it, in particular Tommy
Flowers, went on to do work that directly led to the computers
in use today.
The museum said it needed to raise about £6m to safeguard the
future of the historic computers it has collected.
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A closer look at the Colossus computer
