Graeme G4XOF, SK

Graeme G4XOF lost his battle with cancer Monday 26th November 2018.

Here he is last June proudly showing me his mobile HF antenna, mobile mount and describing how it can be used very effectively as a base station antenna. Ever the enthusiast.

Some tributes:

Sad news and he will be missed with his upbeat attitude on the radio to everybody He made the most out of the time he was given – Min G0JMS.

Still a shock even though I knew about Graeme’s condition. He was such a pleasant and helpful person –  Mike G4CDF.

I heard him many times on the local repeaters during my journey to and from work, and his great personality and sense of humour always came bounding over the air waves, often making you laugh out loud. He will be missed. – Simon M0ZSU

Very sorry to hear about Graeme’s passing. A really nice chap to buy  a radio from. Honest and very thoughtful. A pleasure to do business with. – Harry G3NGX

In a multi-way QSO, late comers with the same name as established operators, would add a 02 ident to keep things simple for the life of net. I was always touched and humbled by Graeme 2 referring to me with respect for an old timer  as Graham 1 whatever the situation, eyeball or net. A font of shared knowledge at the informal Rugger Club gatherings. A help with e-bay bulk purchases saving time and trouble all round for the less adventurous net users . He was dynamic, pushing forward with technology , but always could take time out to explain something I did not grasp about new technology , a true gentleman . A great loss to amateur radio. – Graham, G3XYX.

I didn’t know Graeme well which makes this all the more difficult. I wanted to know him better. It feels like we’ve been friends forever which is a measure of Graeme’s warmth of spirit. We always had a laugh whenever we spoke either on air or in person. That said, Graeme knew his stuff. I affectionately knew him as XON/XOFF (https://en.wikipedia.org/wiki/Software_flow_control). He visited me at home last June where we just talked for 20 minutes or so about 5MHz mobile contacts we’d had, the up-and-coming network radio technology and how he used his mobile HF antenna to great effect mobile and at home. We had a drink or two at Reading Rugby Football Club in Sonning during the summer and the last time I saw him was at the Flight Refuelling rally at Wimborne, Dorset in early August with a number of the RADARC crew where the weather was dreadful but he was chipper as ever.  Something to think about, that. A true radio man; one of a kind. I will miss him greatly.

The funeral is on Monday 10th December 3.15pm Reading Crematorium, South Chapel All Hallows Road, Reading, RG4 5LP.

John

G4RDC

meeting 22nd November: A brief history of RAF ASV radars 1940 to 2010 by Simon Watts G3XXH

All,

Next meeting (22nd November) Simon Watts G3XXH joins us to give us a brief history of RAF ASV radars from 1940 to 2010. (ASV = airborne surface vessel, radar for maritime patrol aircraft)

Venue: Woodford Park Leisure Centre, Woodley, RG5 4LY
Time: 8pm

The history of airborne radars developed in the UK for long range
maritime surveillance by the RAF spans from 1940, when ASV Mk. I entered service on Sunderland and Hudson aircraft, through to the 1980s, when the Searchwater radar entered service on the Nimrod MR2. This history came to an end in 2010 when the Nimrod MRA4 programme was cancelled and the Nimrod MR2 taken out of service. The early radars operated at VHF. Following the development of the high power magnetron, operation moved to S-band and then to X band. Searchwater was a complete departure from earlier radars, incorporating a TWT transmitter, modern signal and data
processing and computer control.

This talk will give an overview of the design and evolution of these
radars, the aircraft they were used in and the performance they
achieved, detecting ships and submarines.

Simon Watts G3XXH is Visiting Professor in the department of Electronic and Electrical Engineering at University College London and formerly deputy Scientific Director and Technical Fellow in Thales UK.

Whilst googling ‘ASV’ I found this interesting link:
https://uboat.net/allies/technical/uk_radars.htm

Min G0JMS also spotted “The Secret of Tuxedo Park” on PBS America talking about the development of radar by Wall Street tycoon Alfred Lee Loomis:

https://www.pbs.org/wgbh/americanexperience/films/secret-tuxedo-park/

Thankyou to George M0GXB for making this meeting happen.

Refreshments afterwards as usual.

73

John
G4RDC

Construction Contest thankyou!

Firstly to Robin G4IWS for hosting yet another successful event.

Also to EVERYONE who entered,  but in particular a callout to two first time entrants:

Guy 2E0GDC: “electrical noise detector”

Bernard M0PIK: “Iambic CW Key – Capacitive Touch” (homebrew PCB + surface mount) + inspirational talk on surface mount and making PCBs.

Also to:

Michael M0MPM: shaver mic adaption. Now, if you google that, you may come up with “pye shaver mic”.  Believe me, it wasn’t that. Mike gave us a beautiful light hearted short talk encouraging us to check the legal aspects of using fist mikes whilst mobile. And shavers.

Roundup:

  • Dave G4BOO: compact  MF/HF receiver
  • Robin G4IWS matchbox sized TTL two tone oscillator
  • Guy 2E0GDC: electrical noise detector
  • Mike G4CDF: multiband SHF antenna feed (1.2/2.4) demonstrated using the club’s new spectrum analyser + VSWR bridge.
  • Bernard M0PIK: surface mount CW paddle circuit and homebrew PCB. (3rd).
  • Michael M0MPM: shaver mic adaption/hybrid
  • Jim G0LHZ: remote control ATU (1st)
  • John G4RDC: FT8 from mc micro taxi radio (2nd)

If I missed anyone or got anything wrong my apologies – let me know and I’ll fix it.

Jim deservedly took first prize and I was very deeply honoured to take second place.

Most importantly we have ideas, enthusiasm and passion for what we do which will undoubtedly result in more developments next year.

I will make sure we have other events during the year where people can share what they are up to.

If anyone has pictures, send them to me and I’ll put them up.

73

John

G4RDC

Construction Contest on Thursday 8th November!

It’s the RADARC Construction Contest on Thursday 8th November!

Venue: Woodford Park

Start time: 8pm

TWO trophies to be won (1st and 2nd prize).

Just bring your “thing” along on the evening in good time (plan to arrive before 7:45pm) to get a place on the tables. If you need the projector (eg. for a video or a software entry) then please let me know.

Depending on number of entries, expect 5-10 minutes or so to present your entry.

Entries so far:

  • A multiband microwave antenna feed: Mike, G4CDF
  • Guy 2E0GDC: an electrical noise detector
  • Bernard M0PIK: CW dual paddle iambic key using SMD components
  • Simon M0ZSU: Construction group update
  • Jim G0LHZ: Mystery software entry (now with one less bug)
  • Robin G4IWS: Two tone test oscillator to check audio distortion on an HF rig
  • Adventures with FT8 and an FM taxi radio: me

Both Mike and I still have work to do so you’ll be in with a very good chance.

Have a go and support your club!

Many thanks to Robin G4IWS for running proceedings.

Homebrew Asda biscuits, tea and coffee afterwards as usual.

73

John

G4RDC

Autumn Junk Sale, Thursday 25th October

It’s the Autumn Junk Sale next meeting (Thursday 25th October)!

Please bring along any unwanted broadly tech based items in order to support the club. RF based junk is always very desirable. Also bring
your cash along buy -er- lots of useful stuff!

Venue: Woodford Park, Woodley as usual. The auction will start 8pm sharp so it’s best to arrive early (eg. 7:30pm) to have a look at the wares.

Please note a couple of things:
* If you successfully bid on something, you’ll need to wait until the
end to settle up.

* If you bring junk along and it doesn’t sell then please be prepared to take it home with you.

Also please read the rules below.

If you have not been before – it’s a hoot. It is an auction run by the
club’s very own top auctioneers/jesters. Even if you don’t wish to buy,
the evening is always entertaining.

Prices tend to be extremely affordable – much better than rallies, for
example.

73

John
G4RDC

RADARC Junk Sale Rules

1. All buyers must be in possession of a bidding number before the auction starts. Non-Members will be required to either join the Club or pay a fee (£2) for this number. Registering for a bidding number implies acceptance of these rules (Non-members bringing material for sale for club funds are admitted free);

2. On completion of a sale, the purchaser must make clear their number and the price paid before taking the goods;

3. Viewing is only allowed up until the point the meeting begins. Following this, all purchasers must keep away from the main selling area in order to allow the event to proceed in an orderly manner. Under no circumstances will bidders be allowed to view articles which are in the process of being sold;

4. It is assumed that all goods are sold for the benefit of the Club. For any person who wishes to have an item sold on their behalf, the Club charges a 10% commission. In the case of non-members, a minimum fee of £5 applies. The fact that it is a commission sale and the name / callsign of the beneficiary must be made clear by a label attached to each item;

5. In the event of item 4 not being satisfied, the Club will retain all proceeds of the sale;

6. Any reserve price, whether for a commission sale or not, must be made clear before the auction starts by means of a label attached to the item. Otherwise it will be for the auctioneer to make whatever price they can for the article;

7. For a commission sale (item 4) or with reserve (item 6) it is in the interest of the seller to ensure that the auctioneer is aware of this fact prior to the sale;

8. Settlement of bidders and sellers fees will only occur after the auction of all items ends. Attendees who cannot wait until the end of the auction should nominate someone who can settle on their behalf after the auction of all items ends.

9. At the end of the event, all unsold goods must been removed by the person who brought them;

10. The auctioneer’s decision is final;

11. All good are sold “as seen”

12. Caveat Emptor!

“Mr Marconi and his marvellous invention: Maritime wireless telegraphy from the Kingstown Regatta in 1898 to the sinking of the Titanic in 1912 and beyond.” + demo!

Folks,

Dr. Elizabeth Bruton is back with us again to kindly give us a talk
entitled “Mr Marconi and his marvellous invention: Maritime wireless telegraphy from the Kingstown Regatta in 1898 to the sinking of the Titanic in 1912 and beyond.”

Peter G4JNU with David M0DHO’s help will also demonstrate a Marconi detector in action.

Venue: Woodford Park, Woodley
Time: 8pm

In the aftermath of the sinking of the Titanic in 1912 and the
subsequent enquiry, the then-Postmaster General Herbert Samuel publicly declared: “Those who have been saved, have been saved through one man, Mr. Marconi … and his marvellous invention.” But what were the origins of this “marvellous” and life-saving invention and what impact did it have on maritime safety? From young Italian inventor Guglielmo Marconi’s world’s first of live event reporting by wireless at the Kingstown (now Dun Laoghaire) Yachting regatta in July 1898 through to Marconi’s experiments at Crookhaven between 1901 and 1914 and hence to the vital, life-saving use of Marconi wireless telegraphy on board the Titanic in 1912, this illustrated talk will uncover the practical and commercial application of wireless telegraphy for the maritime world and its potential impact upon maritime safety in the twentieth century.

Dr Bruton is Curator of Technology and Engineering at the Science
Museum, London specialising in communications. Previous roles include Heritage Officer at Jodrell Bank Discovery Centre, University of Manchester; Co-curator and researcher for the Heritage Lottery Fund (HLF) project and exhibition ‘Dear Harry: Henry Moseley, a scientist lost to war’ at the Museum of the History of Science, Oxford; and postdoctoral researcher for AHRC-funded project ‘Innovating in Combat: Telecommunications and intellectual property in the First World War’ at the University of Leeds. She was one of the 2014-2015 Marconi Byrne-Bussey Visiting Fellow at the Bodleian Library, University of Oxford and also catalogued and researched the Marconi Collection at the Museum of the History of Science, Oxford.

In case you haven’t seen her before, she is also a brilliant speaker and
communicator.

Tea, coffee and biscuits will be in abundant supply.

73

John
G4RDC

Folks,

Thanks to Michael M0MPM, we have a talk entitled “An Introduction to 3D Printing for the Radio Amateur” by James Patterson, M1DST.

Date: Thursday 27th September
Venue: Woodford Park Leisure Centre, Haddon Dr, Woodley, RG5 4LY
Time 8pm.

From James:

“We will introduce you to the fascinating world of 3D printing where we will learn about the different 3D printing methods with a focus on
inexpensive FDM machines. You will leave with an understanding of how the machine works and how 3D printing can be used as a tool to improve your Amateur Radio life. We will discuss the tools used to take an idea from your head to become a finished item.”

Refreshments available as usual.

Looking forward to seeing you there.

73

John
G4RDC

Provisional Intermediate Licence Course – 20/27 October and 3 November

Dear Members,

Please note that Ray G3SCZ and his team are hoping to run a RADARC Intermediate Licence Course on 20/27 October and 3 November this year at Woodford Park, Woodley.

There are currently only a few signed up, so if you are interested or know someone who may be interested please ask them to fill in the form on the Training -> Intermediate Training section on the radarc.org web site.

Thanks and 73

RADARC Committee

Website for the Reading And District Amateur Radio Club