Chelmsford Amateur Radio
Society
Chelmsford Science & Industry Museum - Sandford Mill For an On-Line Map to the Science and Industry
Museum, Sandford Mill
Chelmsford Science & Industry Museum have a series of Open
Sundays each year. CARS was invited to
provide an Amateur Radio Station on the 28th September 2008
to promote Science & Discovery Day.
The day was again bright & dry which resulted in a good
number of the public attending, many with children. Among those
who came, many (or their family)
had connections with Marconi manufacturing trades, Marconi Marine
or other allied industries and therefore appreciated the many displays.
CARS provided our "usual" HF Radio Tx station in the Marconi Hut using our club call, GX0MWT.
The band conditions were not good but better than past Sandford Mill events - there was even
reports of a new Sun Spot! The operators
worked a string of QSOs, all around the UK and Europe including Lanzorote.
Thanks for the effort and kind help especially to those
folk behind the scenes who are so necessary to the
success of such an event.
CARS used the usual 80 Doublet long-wire aerial over the water
course which surrounds the Mill. This contributes
enormously to the strong signal which radiates from GX0MWT.
When will HF condition improve?
Teas were provided by Friend of the Museum.
Thank you Mark for bringing your caravan and setting up the
system - pity that an number of VHF operators happened to be otherwise engaged.
The large Barn had many "things which went up & things which came down"
much to the delight of the young and not so young children.
Demonstrations were held concerning Fire & basic science items.
Friend of the Museum, David explaing that the Racing Car has to be made
The wooden plinth on the bench is mounting a piece of "Under-Sea Cable".
Coli, G0TRM encouraged children to punch their name on the
Morse Tape, put it in the Sender, hear it being sent
to a receiver and finally punched out at the far end.
Unfortunately, a number of young children have a very limited attention span
& seem more intent on destroying this wonderful old equipment
than learning about it.
Seated is Bill's Carer for the afternoon.
A good day with plenty of interested members of the public & beautiful weather.
CARS next event at Sandford Mill will be 24th & 25th Janurary, 2009 to commemorate Jack Binns saving so many lives
in 1909 by calling "CQD" and summonding assistance from the S/S Baltic.
Report from Mark, M0IEO of the VHF Caravan.
07:00hrs
09:00hrs
10:15hrs
There was a good stream of interested members of the public asking questions
and a group of school children who were asking about the origins of radio for a
project for school and were over the moon to find that the father of radio had lived
and worked in Chelmsford. We also had a good number of visitors from the CARS
club come to give some moral support to the day including James, 2E1GUA,
Clive M0GHH, Patrick M0XAP who did a spell on the mic to give us a break and
add some contacts, and of course John our club chairman who came along and
added his support to the efforts to name just a few.
16.30hrs.
As always there are a list of “Thank you's to be done”. To Geoff G7KLV at
Sandford Mill for an excellent location, the use of the ladder and all the
blackberries and cooking apples. To CARS Cub Chairman John Bowen for
arranging the weekend. To John, M3NNQ for putting up with me when he
would clearly have preferred a lay in on a Sunday. To the many CARS
members who came along to support the event and who came on air to chat if
they couldn't get there. To my wife Belinda for all the tea! And finally to my
kids for putting up with the old boy on “that blooming radio” again!
Well that's another season of radio from the caravan over with, if anyone can think
of a location we can take the caravan to and try and make an interesting story out
of it for the club news letter then please do get in touch and we will see if we can
arrange to go there and set up either a 2m or an HF station if conditions allow. Next year
I would like to try and combine the radio with some of the local history of the areas
I visit just to keep the interest of the readers.
73 de M0IEO
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©Copyright CARS 2006
Science & Discovery Day in September
2008
6th
October 2008
Amended the Science & Discovery Day photos & report.
Click here.
Introduction
Mark & his Family provided their lovely caravan & parked it by The Barn and provided VHF & Echolink faciliaties.
Colin, G0TRM & Geoff, G7KLV provided their now famous Morse demonstration display on the staging.
They were joined this time with CARS new Publicity Duo, David & Myra with a laptop continuously showing the
QSO between the Scouts in Hylands Park in 2007 & the International Space Station.
Jeremy, John & CARS VP Geoff, G3EDM at the HF Station.
Photographs by John, G8DET
David, John & Myra looking at the DVD of the ISS QSO.
Clive (logging) and Carl, G3PEM on the microphone.
Visitors and Retired Radio/Marine Officers: -John Robson, G3HMQ; Tony Cuthbert, Philip Ellis & Malcoln Case.
Tony Cuthbert holding the handset and talking about the set in question - which was the end
basically for the Radio Officer on many ships.
Looking at the "model" in the Piano Room.
John, logging with CARS President, Harry G5HF on the microphone.
Mark on the mocrophone under the awning of the VHF caravan with his
family looking on. 2nd Son was visiting other displays.
Here the Lecturer is demonstating that the Alarm Clock sound cannot be heard
when ringing in a glass glas & the air has been all but withdrawn.
Why?
streamlined to go faster in the Wind Tunnel.
Here the Friend of the Museum is demonstating that by pedalling on the cycle, electricity can be generated.
Returning from the Barn we pass the VHF Caravan again.
Notice the guyed mast to the right of the 2 people bending over - this supported an Omni-directional Aerial.
CARS President Harry G5HF & Ethel enjoying the sunshine.
Here a young visitor is concentrating on typing correctly a message on the Morse Printer.
This is on the top staging.
Nearest the camera is Richard Meadows, 2E0SBU standing next to his
Father, Peter Meadows who is now 2E0ZBU. Both were assisting Colin with the
Morse Demonstration.
Here the Morse Printer is being examined due to abuse when Colin, Richard & Peter's back was turned.
Unfortunately the keyboard had been hit so hard it had broken one of the steel operating levers.
David (left) talking to Tony, G4YTG & Bill, G3TIQ (who built the 12ft dish in G3LTF's garden
in the 1960s used for Moon Bounce) and Myra.
Standing by the HR24 Rack (which is now functional
thanks to Geoff, G7KLV replacing 100s of capacitors)
is Michael O'Beirne, G8MOB, an author of the Radio Byegones magazine.
Geoff standing infront of the 7.5KWatt TX to give it "size".
A radio receiver designed to have less than 5 microvolts re-radiated
from the RX aerial so that its use would not be detected.
Question - was this used by Peter Wright?
Patrick, M0XAP in jovial mood with Malcoln G4KGL checking his watch.
Thanks to Dr Bowles and the Friends of the Museum for making the event so successful.
The day dawned bright and sunny and had my first cup of tea to think about what
the caravan needed to be loaded with. All loaded and ready to go so we
hitched up we were on the road by 08:15hrs with John Blamey (M3NNQ) acting as
wingman behind me and both his and my radios tuned to 145.450Mhz. We are
developing a bit of a reputation for our inane chatter on 2m when we are driving to
club events with listeners in Kent and Southend on Sea tuning in to us just to listen
to the adventures of the two blokes from Canvey with their caravans. We are
often asked on-air when we are taking the vans out again and what frequency we will be on!
We arrive at Sandford Mill - it is all hands on deck to put up the awning and set up
the 2m radio and get a cup of tea on. Next job was the antenna and mast,
John and I got this together in about 10 minutes. I held it upright while
John fought his way through the stinging nettles to anchor the mast to the ground
with the guy lines. I will admit to having a wry smile on my face when
John managed to sting himself on the nose while banging in a peg.
We were on the air and calling CQ for a test transmission and to check all the
kit was working and that the VSWR on the antenna was OK, 1.2:1 at 144Mhz
and 1.3:1 at 145.950 Mhz. Just time for another cuppa before we get
going and then down to business, contacts were hard fought on 2m, there
seemed to be hardly anyone on air this morning, must be out in their gardens
making the most of the last of the summer sun. We had contacts with
M0FGH in Kent, M0UKS working mobile on his way to Norfolk and M3XMK in
Brightlingsea to name just three.
As always, all good things must come to an end and before we knew it, it was time to
pack all the kit away for probably the last time this year as far as working mobile
from the caravan goes, Belinda and the kids started on the awning while John
and I got to work on the radio gear and by 17:30 we were packed away and
ready to hit the road home having had another enjoyable day thanks to the
generosity of Sandford Mill. I love working at Sandford Mill, it's close to
home but could just as easily be miles away with tranquil surroundings and always
made to feel welcome. We do have one new convert by the way, my
Son Ross wants to know when the next Foundation License Course is being held?
I have him hooked; I just need to reel him in!
Mark Sanderson.