CUWS Termly Newsletter: Michaelmas 2009 G6UW from the Editor General Matters Welcome to a Rather Belated Michaelmas News- Letter
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NEWS CUWS Termly Newsletter: Michaelmas 2009 G6UW From the Editor General Matters Welcome to a rather belated Michaelmas news- letter. I would first like to welcome our two new International Visitors committee members, Jordan Skittrall M0SKI as CUWS receives visits from quite a number of Chairman and Oliver Snowdon M0ZES as Junior foreign amateurs visiting the UK – everybody Treasurer. I’m also grateful to you all for putting from high-powered telecommunications regu- up with me as Chairman for the past two years lators to famous football stars. We are always and Secretary before that! keen to welcome them at the Maypole and take them out to the shack to help ease the pain of Every newsletter since 2007 has been longer being away from their own stations! than its predecessor, and this edition, covering the Society’s activities over the past four terms, First, news of two visitors who should really is no exception. As you peruse these pages, you have appeared in the last newsletter. On 12 June will find articles on DXpeditions spanning three 2008, Satya Gupta VU2SNN, the Chief Regula- continents, reports on no fewer than seven con- tory Advisor at BT Global Services SAARC, was in tests and news of 26 licence exam passes – and Cambridge for a conference and joined us at the that’s just the tip of the iceberg! Maypole for a drink. I must highlight in particular the three excellent talks scheduled for later this term, the Morse classes which will continue for all who are inter- ested, and the CRG Radio Loan Scheme – these all involve a significant contribution of time or money by those involved, and I really would en- courage you to make the most of them. Finally, those of you who have been following he progress of the New Shack Project will be ex- cited to read of our recent planning application success in the ‘Operating’ section, below. Hugo Scott Whittle M0HSW Satya VU2SNN and Martin G3ZAY For more information on any events, or to contribute something for the next newsletter, please contact the secretary. Please also see the website for all the latest news and photos: www.g6uw.org Chairman: Jordan Skittrall M0SKI, Wolfson College,chairman at g6uw.org Secretary: Stephen Begley M0ZES, Queens’ College, spb46 at cam.ac.uk Junior Treasurer: Oliver Snowdon M0XOS, Churchill College, os281 at cam.ac.uk President: Martin Atherton G3ZAY,g3zay at btinternet.com Transmitting Secretary: Michael Wells G7VJR,michael at g7vjr.org Cambridge University Wireless Society 20 January 2010 Page 2 Sir Martin Ryle On 8 October 2009 the Royal Mail issued a set of 10 stamps featuring ‘Eminent Britons’. One of the people featured is the Cambridge radio as- tronomer Sir Martin Ryle, who is better known to us as G3CY and a former President of CUWS. Ryle was Astronomer Royal for 10 years, a joint Nobel prize winner in 1974 and the first Director of the Mullard Radio Astronomy Observatory at Lord’s Bridge. But perhaps his greatest claim to fame was that he was one of the few peo- ple in Cambridge to suffer TV interference from the CUWS station, when it was located near his house off Grange Road! For many years Ryle’s Tom M0TJH, Cezar YO8TLC and Martin G3ZAY influence could be heard in the radio astrono- my offices at the Cavendish as Morse keys and Two days later, Cezar Lesanu YO8TLC, a PhD stu- oscillators were used to summon people to the dent in acoustics (noise cancellation) at Suceava phone – everyone had their own callsign and University, Romania, visited the shack and made was expected to recognize it when it was sent a few contacts as M/YO8TLC on CW. Tom M0TJH, over the public address system. Amazingly, the Rui M0RLM and Martin G3ZAY then took him to Radio 4 ‘Today’ programme ran a short feature lunch at Dry Drayton before showing him the claiming that nobody had heard of him and in- Mullard Radio Astronomy Observatory site. terviewed one of his former PhD students who More recently, Giuliano Sandal I1SAF contact- tried to explain his numerous accomplishments. ed us to say that he would be visiting his son, who works in the Department of Chemistry, and CollegeARC would like to see something of the club while he Dominic M0BLF, a former CUWS Chairman, has was in Cambridge. On 20 April 2009, he and his recently been involved with the newly-launched friend Rubens IW1PDP were given a tour of the university radio club website www.CollegeARC. shack by Jordan M0SKI. He was suitably envious com. Those behind the project are keen to get of our ‘beautiful equipment and antenna farm’, more members outside the US, and both current and is now keen to apply for his UK licence and students and alumni are encouraged to join, to operate from here on future visits. share ‘best practice’ examples in running uni- versity club stations or just to contribute to the lively and varied fora. The founders give a brief outline of the site’s aims below. ‘CollegeARC has been established to provide a way for college, university, and all other higher education schools with a student club interest- ed in amateur radio (ham radio) to interact with one another online. We have effectively created a community of campus stations which commu- nicates and collaborates together. The College Amateur Radio Club Association is here to show that amateur radio is capable of growing along- side and even with other modern technical hob- Jordan M0SKI and Giuliano I1SAF bies.’ Page 3 Friday 19 March 2010 Talks and Trips Understanding Radio Specifications – Ludovic IET Talks Laprade M0GDO The Cambridge Network of the Institution of Engineering and Technology hosts regular tech- Falkland Islands nical talks which are often of interest to CUWS Michael G7VJR and Martin G3ZAY will be on members. The evening lectures are free to at- the air from the Falkland Islands (IOTA SA-002) tend and membership of the IET is not required. from 21–29 January 2010 as VP8DMN and VP- Refreshments are served from half an hour be- 8DFK respectively. They will be following in the fore the scheduled start time of each talk. For footsteps of the ZD8UW DXpedition in January more information on forthcoming events, see 2009 (see the article later in the newsletter), the network’s website at www.iet-cambridge. travelling by MoD charter from Brize Norton, via org.uk. Ascension, to Mount Pleasant on East Falkland. I’m sure there are quite a few CUWS members CDARC Rally, Quiz and Talks for whom this will be a new one, so do take the opportunity to get out to the shack and add it The Cambridge and District Amateur Radio to your log. Club will be holding its annual rally on Sun- day 7 March 2010 at the Britten Arena, Wood Green Animal Shelter, King’s Bush Farm, London Sunspots and the Solar Dynamo Road, Godmanchester PE29 2NH. The rally al- – 4 February ways provides an excellent opportunity to pick The Society is pleased to announce a talk on so- up new and second-hand, often hard-to-find, lar physics by Professor Michael Proctor of the equipment from both commercial retailers and Astrophysical Fluid Dynamics and Nonlinear Dy- private sellers. Follow the link from the CDARC namics group at DAMTP. The venue is, as usual, homepage at www.cdarc.co.uk for more infor- the Bateman Auditorium at Caius College; the mation about the rally as it becomes available. talk will take place at 7pm on 4 February 2010. Shortly afterwards, on Friday 12 March 2010, is Professor Proctor will describe the physical and the annual CDARC quiz. This was won in 2006 periodic properties of sunspots, covering their and 2007 by CUWS teams, so it is high time we magnetic characteristics and average 22-year reclaimed our title! The quiz is always an enjoy- cycle. He will describe the knowledge of sur- able occasion, and I’m sure the club would ap- face and sub-surface solar behaviour gained preciate as many participants as possible. from helio-seismography and the latest thinking on the underlying mechanisms responsible for Members are also reminded that they are al- generating the intense toroidal magnetic fields ways welcome to attend CDARC talks, which implied by the periodic appearance of sunspot usually take place on Friday evenings at 8pm, pairs. at the Parkside Federation, Coleridge Commu- nity College, Radegund Road, Cambridge CB1 As always, the talk will be free, and non-mem- 3RJ. More details can be found on the Club Pro- bers are most welcome to attend. gramme & Events page of the CDARC website, but a couple of talks which may be of interest are mentioned below. HF Direction Finding– 25 February Friday 22 January 2010 On Thursday 25 February 2010, CUWS will wel- Home Brew Amateur Radio Astronomy – Pe- come Dr David Sadler of Roke Manor Research ter Howell M0DCV and Peter King G8KJP for a talk at 7pm in the Bateman Auditorium, Caius College. Page 4 Dr Sadler will review traditional approaches ingly so hard to cover one county effectively, to HF direction finding and then describe how and will discuss the engineering challenges of modern signal processing technology can be doing so reliably. deployed to greatly improve on the natural beamwidth of an antenna array; a technique More information about the local RAYNET group known as ‘superresolution’. together with details of some of its upcoming events can be found at www.cambridgeshire- He will describe a typical superresolution DF raynet.net. system including antenna array layouts and re- ceivers, and outline the signal processing tech- RSGB Convention 2009 niques required to pin down the azimuth and CUWS rather stole the show at the latest RSGB elevation angles of arrival of one or more sig- Convention (the re-branded HF Convention), nals.