Past Club Meetings: July - December 2003
Nigel, G6ZVV (V V) and Stuart, G7KSQ visited Beehive Lane for the
final meeting of the year to refresh memories of the Radio Amateur
Emergency Network (RAYNET).
The subsequent Waverley Enquiry found that the sea defences & early
warning schemes were a mockery. It accepted that many had died simply
because they were not warned to take shelter or evacuate. The first
most people knew was when the water had surrounded the house.
Nigel drove the computer projector while Stuart did the presentation.
We were told of some of the many events RAYNET had attended but were
pleased to hear that fortunately we had not seen the severe weather
of yesteryear.
To provide "on site training" RAYNET cooperates with local Societies &
events such as those involving the Scouts and the Danbury Firework
Display in November.
After an interesting question & answer session, Stuart invited anyone
to join RAYNET and gave out some application forms.
Members were provided with shortbread & chocolates as they took the
refreshment break.
Stuart drew the Raffle where many good prizes were eagerly snapped up
with the last ticket being chosen by Luke, a young SWL.
November Meeting - RadCom Editor
RadCom Editor, Steve Telenius-Lowe, G4JVG visited CARS and was delighted
to see the large audience.
If you would like to see Murray's Slides in PDF Format, click below. They
are only 22kBytes so should download quickly. Click BACK to return to
this page.
Click Here to see Murray's 7 Slides.
October Meeting - Annual General Meeting
John, G8DET opened the evening in the Board Room and after
announcements called on Carl, G3PEM to present the Amateur of
the Year Award to Trevor for his work with Publicity.
Then the certificates for the Contructors Competition were awarded.
The AGM followed with Chairman's, Secretary's, Membership & Treasurer'
reports's being read and accepted.
John then stood down the old
Committee, President Harry, G5HF then suggested that assuming noone else
wanted the Chaiman's job that he should be elected again. The new
Committee were then voted in.
A glass plaque & certificate was presented to David, M0BQC to record
his services as Secretary.
George, G3UTC & Jean provided the Raffle which was drawn after the break.
Then a Forum consisting of Murray, G6JYB, Fred, G2HFN & Tony, G4YTG answered
questions from the floor.
A good evening was had. Thanks to the Committee.
Paul travelled via the M25 to present another absorbing evening - this
time on Simple Antennas. The emphasis on antennas for the 1.2 GHz and
2.4 GHz Amateur Television bands, however, all the designs he showed
scale quite easily to the other amateur bands.
Paul started by going over the basic antennas types; isotropics,
dipoles and ground-planes.
Paul then went on to cover Yagi antennas. With these high gains can
be achieved in one direction by simply adding more director elements
although after about 15 directors you start hitting the law of
diminishing returns where doubling the length starts giving far less
than 3db extra gain. A solution to this is to stack the Yagis to give
more gain. Paul showed us an omni directional antenna which used the
principal of stacking to give high gain all round coverage. This
antenna comprised 35 stacked dipoles which gave an impressive 20db
of gain.
Thank you Paul for another interesting evening.
Another August, and another Club Tabletop Sale has come and gone, this
last one, was possibly the most successful we have yet held. Over 80
people were known to have attended as members, vendors and visitors.
Our well known visitor Zippy, G4ZPE was again much in evidence and
with help from Simon, he had many happy customers at their table vying
for all sorts of goodies from the depths of the Waters and Stanton
store. Particular thanks to them for the super prize they gave to the
Club Raffle, the QRP SSB transceiver kit attracted many hopeful punters
and it helped to make the Raffle a great success, organised by Tony, G4YTG.
We had sellers from afar a field as Chingford in one direction and
Bexley, Kent in another, we hope they will come again another year
and join in the very friendly and social evening.
Thanks to all the Club Members who came along to sell, to buy or just to
have a look and to exchange views with others. Thanks of course to the
Stewards and others who played their part in helping to make it a
very successful evening.
After the refreshment break, Murray, G6JYB and Chris, G0IPU
presented the latest information regarding Foundation, Intermediate
and Licence conditions.
CARS are running these courses at Danbury at the present time.
Murray & Chris's Slides in
Adobe Reader PDF format - only 10kbytes.
December Meeting - RAYNET
Click here to go back to the Top of this Page
Why have RAYNET?. RAYNET was originally formed in 1951 but was
not taken seriously by the authorities. We were reminded that we have
just witnessed the 50th year anniversary of the severe storm which swept
into East Anglia & Essex in January & February 1953.
Oxenham Farm, Great Wakering owned by Frank & Eva Threadgold who feature
in the picture in 1953. Now owned (April 2005) by John & Neil Treadgold.
Details supplied by Sarah Aldridge - thanks - April 2005.
RAYNET was now formally established and has responded to a number of
emergencies.
From left to right. Carl, G3PEM; Trevor, M5AKA; Ken, G3PMW; Ela, G6HKM;
Eric, G8ADX; Julie; Nigel seated infront of his portable computer which
drives the projector & Brian, G4CTS.
Thank you Nigel & Stuart for an interesting presentation.
One side of the Marconi Social Club's meeting room.
All November Photographs taken by John, G8DET
Screen shot projected from Chris, G0IPU's computer projector of Steve's
slide. Steve went on to describe how RadCom is put together and some
of the problems encountered. After his presentation he answered questions
and received some constructive suggestions for improvement.
A very interesting presentation - thank you Steve & the RSGB.
RadCom Editor Steve & Trevor, M5AKA taken during the break.
Steve, G4JVG presenting Steve, G4ZUL with the Chelmsford
Award number 21 for CW & 22 for SSB.
Murray lecturing on the recent trip Chris, G0IPU, Carl, G3PEM &
he took to the RSGB "Train the Trainers" seminar. He also informed the
audience of the proposed changes to the Licences which will come into
effect on January 1st, 2004.
Colin, G0TRM is the CARS Sound Engineer. Here he is looking at changing
the tape during the presentation by Steve, G4JVG. Note the Receive unit
for the dual diversity Radio Micrphone, Audio Power Amplifier & driver
unit for the Radio Loudspeakers. Thanks Colin you do a great job.
Harry presenting Trevor with Amateur of the year Award.
Photograph taken by Anthony, M1FDE
Trevor has ensured that the world of the Amateur Radio fraternety
knows about CARS.
Ron, M3CAM being presented with the CW Chelmsford Award by Carl, G3PEM.
This & all further photographs taken by Martyn, M3VAM.
Harry presenting Denis (left) with his Constructors Certificate
Colin, G0TRM being presented with his Constructors Certificate
David, M0BQC being presented with his Constructors Certificate
Anthony, M1FDE being presented with the Roy Martyr Award & Constructors
Certificate by Ela, G6HKM.
Chris, G0IPU presenting the Foundation Report. CARS has been in
the forefront of presenting Foundation & Intermediate teaching programmes.
See the Links Page for copies to download.
John, G8DET (left) with David, M0BQC & his Wife, Jill with his Certificate.
John presenting Carl, G3PEM with his glass rose bowl as Vice Chairman
for a number of years.
The top table for the Forum. Left to Right. Murray, G6JYB, Fred, G2HNF & Tony, G4YTG.
Photograph by Trevor, M5AKA.
The main topic being - how do you put up a full size G5RV aerial when
your garden is too small?.
There were a number of suggestions which included
a) supporting the wire with a number of insulators such that each leg was
zig zagged
b) provide a loading coil in the centre of each of the two arms. These are
available from W&S.
c) letting the surplus wire hang down at the ends of the garden (don't touch
when TXing)
d) tieing the two feeder wires together and load up as per normal.
September Meeting - Amateur Aerials by
Paul Prior,
Paul holding a 70cm dipole in his right hand & a Double D
in his left.
A balloon was put to good effect to illustrate
the different types of radiation pattern that each antenna produced.
Although ground planes are quite popular they can have a high angle of
radiation but Paul showed this can be reduced by sloping the ground
plane elements downwards.
Paul holding a 13cm Helix in his right hand & a Double D
in his left.
August Meeting - The Tabletop Sale by Colin,
G0TRM.
July Meeting - UI-View by Charlie Davy, M0PZT
UI-View is a packet based APRS - Amateur
Positioning Reporting System OR Automatic Packet Reporting System
using a PC, a TNC and a radio. It gives visual indication of
each user's position in the world via digipeating. It is used
in the amateur context mainly for direct messaging via the
digipeaters.
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©Copyright John, G8DET 2003