October 2009

<body topmargin=0 leftmargin=0 marginheight=0 marginwidth=0> <table cellpadding=0 cellspacing=0 border=0><tr> <td valign="top" colspan=2 height=90 BGCOLOR="#006699" TEXT="#080000" bgproperties="fixed" background="015285a1erlcgo.png"> <div> <FONT SIZE="5" COLOR="#FFCC66" FACE="Arial" ><B>Bob F Burns G3OOU</B></FONT><B>     |     </B><A HREF="index.htm" TARGET="_top" TITLE="Bob F Burns G3OOU"><U><B>home</B></U></A></div> <div> back to  <A HREF="id60.htm" TARGET="_top" TITLE="Newsletters"><U><B>Newsletters</B></U></A></div> <div> </div> </td> </tr><tr> <td valign="top" width=150 BGCOLOR="#FFCC66" TEXT="#080000" background="013d4c00dkelyh.png"> <div> <B>October 2009</B></div> <div> <A HREF="id70.htm" TARGET="_top" TITLE="November 2009"><U>November 2009</U></A></div> <div> <A HREF="id45.htm" TARGET="_top" TITLE="December 2009"><U>December 2009</U></A></div> <div> <A HREF="id50.htm" TARGET="_top" TITLE="January 2010 "><U>January 2010 </U></A></div> <div> <A HREF="id67.htm" TARGET="_top" TITLE="February 2010 "><U>February 2010 </U></A></div> <div> <A HREF="id27.htm" TARGET="_top" TITLE="March 2010"><U>March 2010</U></A></div> <div> <A HREF="id28.htm" TARGET="_top" TITLE="April 2010"><U>April 2010</U></A></div> <div> <A HREF="id23.htm" TARGET="_top" TITLE="May 2010"><U>May 2010</U></A></div> <div> <A HREF="id32.htm" TARGET="_top" TITLE="June 2010"><U>June 2010</U></A></div> <div> <A HREF="id24.htm" TARGET="_top" TITLE="July 2010"><U>July 2010</U></A></div> <div> <A HREF="id39.htm" TARGET="_top" TITLE="August 2010"><U>August 2010</U></A></div> <div> <A HREF="id40.htm" TARGET="_top" TITLE="September 2010"><U>September 2010</U></A></div> <bR> </td> <td valign="top" height=390 BGCOLOR="#FFFFFF" TEXT="#080000"> <div> <I>October 2009</I></div> <DIV ALIGN="LEFT"></DIV> <div> <B><U>IN THIS ISSUE</U></B></div> <div> <B>Meeting Program</B></div> <div> <B>Club News</B></div> <div> <B>Future Meetings & Events</B></div> <div> <B>Members News</B></div> <div> <B>Computer Corner</B></div> <div> <B>Technical Snippetts</B></div> <div> <B>Noticeboard - Wanted/For Sale</B></div> <div> <B>News from other Clubs</B></div> <bR> <div> <B>Meeting and Event Diary:</B></div> <div> <TABLE BORDER="2" CELLPADDING="1" CELLSPACING="1" WIDTH="669" BORDERCOLORLIGHT="#C0C0C0" BORDERCOLORDARK="#808080" FRAME="BOX" RULES="ALL" HSPACE="0" VSPACE="0" > <tR> <tD VALIGN=TOP HEIGHT= 57 ><NOBR><div> 27 Sep 09</div> </NOBR></tD> <tD VALIGN=TOP WIDTH="17"><div> R</div> </tD> <tD VALIGN=TOP WIDTH="225"><div> West London Radio & Electronics Show, Sunbury-on-Thames, Middx.</div> </tD> <tD VALIGN=TOP><NOBR><div> 06 Nov 09</div> </NOBR></tD> <tD VALIGN=TOP WIDTH="17"><div> M</div> </tD> <tD VALIGN=TOP WIDTH="225"><div> Extraordinary General Meeting (EGM) followed by a regular meeting</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 57 ><NOBR><div> 02 Oct 09</div> </NOBR></tD> <tD VALIGN=TOP WIDTH="17"><div> M</div> </tD> <tD VALIGN=TOP WIDTH="225"><div> Mobiles, Portables and Test Equipment</div> </tD> <tD VALIGN=TOP><NOBR><div> 15 Nov 09</div> </NOBR></tD> <tD VALIGN=TOP WIDTH="17"><div> R</div> </tD> <tD VALIGN=TOP WIDTH="225"><div> CATS Annual Bazaar, rear of Lion Green Road Car Park, Coulsdon.</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 57 ><NOBR><div> 2/3 Oct 09</div> </NOBR></tD> <tD VALIGN=TOP WIDTH="17"><div> R</div> </tD> <tD VALIGN=TOP WIDTH="225"><div> Lincoln Short Wave Club National Hamfest in association with the RSGB</div> </tD> <tD VALIGN=TOP><NOBR><div> 04 Dec 09</div> </NOBR></tD> <tD VALIGN=TOP WIDTH="17"><div> M</div> </tD> <tD VALIGN=TOP WIDTH="225"><div> Christmas Social</div> </tD> </tR> </TABLE></div> <div> <I>E = External event, M = club meeting, R = Rally</I></div> <div> <B><U>Event News</U></B></div> <div> <B>4</B><B>th</B><B> September - EGM and Fun Quiz </B></div> <div> The EGM held on the 4th September did not result in the motion being accepted by the members. There will be another opportunity for members to discuss the future of the Club with the full committee at the November meeting.</div> <div> Victor G1PKS then organised a Fun Quiz following the EGM. There were two teams which attempted to guess/feel/and seek answers in the three rounds, much to the amusement of some of the members. Prizes of bottles of lemonade went to the winners, and wooden spoons to the runners-up. </div> <div> <B><U>Future Club Meetings and Events</U></B></div> <div> <B>2</B><B>nd</B><B> October - Portables, Mobiles and Test Equipment</B></div> <div> Test equipment will be provided to conduct some basic sensitivity, power output and modulation tests on members radio equipment so if you have a portable or mobile unit please bring it along with a suitable mains based power supply and be prepared to demonstrate its operation. If it has anything other than BNC or UHF (SO239) RF coaxial connectors please provide a suitable adaptor.</div> <div> <B>6</B><B>th</B><B> November - EGM + Regular Meeting</B></div> <div> Our November meeting will commence with an EGM to enable members to discuss and vote on the future of the club and I will be writing to all members prior to this meeting. The rest of the meeting will be advised in the next newsletter.</div> <div> <B><U>Members News</U></B></div> <div> September has been a very busy month for your Chairman:</div> <div> A new aerial has just arrived - a combined 6m and 4m yagi aerial from Vine Antennas Ltd that uses the open sleeve technique discussed in a previous newsletter. This particular aerial has three elements on 6m and four elements on 4m mounted on a square boom that is just over 2m in length.</div> <div> Although a very limited (three page) set of instructions were provided, the aerial was easy to assemble and all parts were clearly labelled. An optional balun is available at extra cost but no weatherproof cover was provided for the joint between the coaxial feeder and the driven element so one had to be fitted using a standard project box from Maplin. The aerial is now installed on the rotateable mast and fully operational. The GB3BUX Buxton beacon is clearly audible on 70.0MHz - the 50MHz instance is just audible. Photo next month.</div> <div> Cathy and I spent a week at Milngavie, six miles north of Glasgow and took the opportunity to visit a mixture of museums, galleries and National Trust properties and also sample some of the local restaurants. We also went to see a great piece of engineering and the world's only rotating boatlift - the Falkirk Wheel. It was constructed with the objective of restoring navigability across Scotland on the Forth & Clyde Canal and Union Canal.  The Forth and Clyde Canal lays 35m below the level of the Union Canal.  Historically, the two canals had been joined at Falkirk by a flight of 11 locks that stepped down across a distance of 1.5km, but these had been dismantled in 1933, breaking the link.</div> <div> What was required was a method of connecting these two canals by way of a boatlift.  Dundee architects presented a Ferris Wheel type design that was used to secure Millennium Commission Funding for the Project.</div> <div> The various parts of The Falkirk Wheel were actually constructed and assembled in Derbyshire. A team there assembled the 1,200 tonnes of steel, painstakingly fitting the pieces together to an accuracy of just 10 mm to ensure a perfect final fit.</div> <div> The Falkirk Wheel lies at the end of a reinforced concrete aqueduct.  Boats entering the Wheel's upper gondola are lowered, along with the water that they float in, to the basin below. At the same time, an equal weight rises up, lifted in the other gondola. This works on the Archimedes principle of displacement. You can see the wheel mid-travel in the following photo:</div> <div> <IMG SRC="3351ed70.jpg" border=0 width="286" height="215" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> We also looked at the work of Charles Rennie Mackintosh, an architect and designer whose work spanned the nineteenth and twentieth centuries. He was far ahead of his time and a lot of his designs would not look out of place in modern properties. He designed a significant number of well known properties in Scotland including House for an Art Lover, Hill House, the Willow Tea Rooms and the Glasgow School of Art, all well worth a visit.</div> <div> Sadly, no radio activity was heard during this holiday on the 144MHz band using a small Alinco hand portable transceiver.</div> <div> <B><U>Technical Snippets</U></B></div> <div> Martein Bakker PA3AKE has updated his web site with his latest results on very high performance receiver front ends. See <A HREF="http://www.xs4all.nl/~martein/pa3ake/hmode/" TARGET="_top" TITLE="http://www.xs4all.nl/~martein/pa3ake/hmo"><U><U>http://www.xs4all.nl/~martein/pa3ake/hmode/</U></U></A> for more information. Both up and down conversion are considered and this site contains a large amount of technical information on the individual components and circuits.</div> <div> <B><U>Computer Corner</U></B></div> <div> Some interesting new developments are taking place in Weak Signal Communication Software.</div> <div> <B>WSJT, MAP65 and WSPR</B> are open-source programs designed for weak-signal digital communication by amateur radio.  Normal usage requires a standard SSB transceiver and a personal computer with a soundcard.</div> <div> <B>WSJT</B> ("Weak Signal Communication, by K1JT") offers specific digital protocols optimized for meteor scatter, ionospheric scatter, and EME (moonbounce) at VHF/UHF, as well as HF skywave propagation. The program can decode fraction-of-a-second signals reflected from ionized meteor trails and steady signals 10 dB below the audible threshold.</div> <div> See <A HREF="http://www.physics.princeton.edu/pulsar/K1JT/wsjt.html" TARGET="_top" TITLE="http://www.physics.princeton.edu/pulsar/"><U><U>http://www.physics.princeton.edu/pulsar/K1JT/wsjt.html</U></U></A> for more information and downloads.</div> <div> <B>MAP65</B> implements a wideband, polarization-matching receiver for JT65 signals. It works together with Linrad (by SM5BSZ) and dual-polarization RF hardware to receive and decode all detectable JT65 signals in a 90 kHz passband, matching the linear polarization angle of each one and producing a band map of decoded callsigns sorted by frequency.  Its principal application is EME on the VHF and UHF bands. MAP65-IQ is a single-polarization version designed to work with the SDR-14, SDR-IQ, and Perseus receivers. It has all features of MAP65 except the polarization matching capability.</div> <div> MAP65 works together with the Linrad software (by SM5BSZ) and suitable hardware that converts RF to baseband.  The Linrad/MAP65 combination implements a wideband, polarization-matching receiver for the JT65B protocol.</div> <div> MAP65-IQ is similar to MAP65 but uses only one polarization.  It works with Linrad and the SDR-14, SDR-IQ, and Perseus receivers and offers the sub-modes JT65A, JT65B, and JT65C.  For the convenience of new users the installation package includes version 3.05b of Linrad for Windows and a full set of Linrad parameter files for the SDR-14, SDR-IQ, and Perseus. See <A HREF="http://www.physics.princeton.edu/pulsar/K1JT/map65.html" TARGET="_top" TITLE="http://www.physics.princeton.edu/pulsar/"><U><U>http://www.physics.princeton.edu/pulsar/K1JT/map65.html</U></U></A> for further information and downloads.</div> <div> <B>WSPR</B> (pronounced "whisper") stands for "Weak Signal Propagation Reporter." This program is designed for sending and receiving low-power transmissions to test propagation paths on the MF and HF bands. Users with internet access can watch results in real time at WSPRnet (<A HREF="http://wsprnet.org/drupal/" TARGET="_top" TITLE="http://wsprnet.org/drupal/"><U><U>http://wsprnet.org/drupal/</U></U></A>).</div> <div> WSPR implements a protocol designed for probing potential propagation paths with low-power transmissions.  Each transmission carries a station's callsign, Maidenhead grid locator, and transmitter power in dBm. The program can decode signals with S/N as low as -28 dB in a 2500 Hz bandwidth.  Stations with internet access can automatically upload their reception reports to a central database called WSPRnet, which includes a mapping facility.  To see a live version of the map pictured at top right, see <A HREF="http://wsprnet.org/drupal/wsprnet/map" TARGET="_top" TITLE="http://wsprnet.org/drupal/wsprnet/map"><U><U>http://wsprnet.org/drupal/wsprnet/map</U></U></A>.</div> <div> The WSPR software may be downloaded from <A HREF="http://www.physics.princeton.edu/pulsar/K1JT/wspr.html" TARGET="_top" TITLE="http://www.physics.princeton.edu/pulsar/"><U><U>http://www.physics.princeton.edu/pulsar/K1JT/wspr.html</U></U></A>.</div> <div> <B>SimJT</B> generates JT65 and CW test signals with a user-specified signal-to-noise ratio. It is useful for testing the JT65 decoder and the relative capabilities of these two modes.</div> <div> <B><U>Miscellaneous</U></B></div> <div> You may be aware that the fourth plinth in Trafalgar Square is currently being occupied by members of the public, one hour at a time, as part of the One And Other art project. </div> <div> On Friday 25 September, between 4 and 5pm, the plinth will be occupied by Martin Maynard, G8CIX. He will be demonstrating amateur radio and, for one hour, operating the special event station GB1AO. This will doubtless become one of the rarest callsigns ever. </div> <div> Martin is being supported in his endeavours by Icom UK, who have generously loaned equipment for the event. If you can't make it to Trafalgar Square yourself you can watch proceedings live on Sky Arts or on the web stream at <A HREF="http://www.OneAndOther.co.uk" TARGET="_top" TITLE="http://www.OneAndOther.co.uk"><U><U>www.OneAndOther.co.uk</U></U></A>. Martin's own web site is <A HREF="http://www.GB1AO.co.uk" TARGET="_top" TITLE="http://www.GB1AO.co.uk"><U><U>www.GB1AO.co.uk</U></U></A>.</div> <div> <B>Continued from Last Month</B></div> <div> John Logie Baird - Part 2</div> <div> <IMG SRC="337bb230.png" border=0 width="443" height="291" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <I>John Logie Baird (Left) with Ben Clapp at his amateur station 2KZ used to transmit television across the Atlantic ion February 1928</I></div> <div> <I>(Courtesy of the Crystal Palace Foundation)</I></div> <div> He rescued obsolete electric motors to turn cardboard discs and fitted the discs with lenses from bicycle lamps. He managed to mount a demonstration to show selected people from the world of science that the principle of transmitting and receiving an image could be achieved, and even had one of them looking under the coffin-lid mounting base to find wires. The quality of the picture was of course crude by any standard, but the principle was established, even if those who saw it thought it had no future.</div> <div> The main question was of course whether the invention was capable of being developed for any commercial use and after a period at Hastings to improve his health and with help from his family and one or two supporters, Baird set up workshops at Long Acre in London. As early as 1929 Baird had persuaded the Postmaster General and the BBC (the latter with reluctance) to allow test transmissions using his 30-line system from the Savoy Hill studios. These included a play by Pirandello in 1930. The BBC withdrew from the production side of the transmissions later in 1930. He accepted a challenge to televise the Derby and did so in 1931 and 1932 (one shown on a giant screen in a cinema followed by cheers and congratulations from all who watched it - presumably not just from winners!). </div> <div> He moved into a studio at Broadcasting House in August 1932 after Reith yielded to pressure from his Chief Engineer and in 1933 moved to workshops and studios at Crystal Palace. The venue for a public television broadcasting service was chosen as Alexandra Palace rather than Crystal Palace, and by then a rival system devised by EMI had attracted the interest of the BBC. In September 1933 Baird demonstrated 120-line television and then, in 1934, 180-line. At this point Baird's company had contacted Philo T Farnsworth to obtain a licence to use his kind of cathode-ray tube and his electronic camera.</div> <div> In 1934 the GPO set up the Selsdon Committee to make recommendations about the future of television and the systems available. It recommended that a public television service should use both the EMI 405-line system and Baird's latest 240-line one. In 1935 Baird's by then out-moded 30-line system was closed down and it was decided in 1936 to transmit, on alternate days, both the Baird system and the EMI system. Those who received both systems had of course to have equipment capable of accepting both kinds of signals. After the results were considered, the BBC chose the EMI system, but Baird, although disappointed, continued his developments. </div> <div> He had moved to 3 Crescent Wood Road, Sydenham to be near his extensive workshops under the Main Transept of the Crystal Palace, which used the South Tower for experimental transmissions. He had by now formed a company but was very much a `loner' in his research and also did not make detailed notes of what he was doing and why. He was far-sighted in his research in that he developed a colour television and a stereoscopic system long before anyone else. His limited-range transmissions from Crystal Palace were, in effect, the first independent television system.</div> <div> In the event, although there was a lot to be said for Baird's system, the BBC chose EMI. Sonic said that this was an expression of Reith's dislike for Baird (which went back to their schooldays), but with hindsight it can be seen that the choice was probably the right one. In a further, major, blow to Baird in 1936, his workshops were burnt to cinders by the fire that engulfed the Crystal Palace arid he had to abandon a lot of his work. His studio and the South Tower were however spared, and he carried on with trial transmissions from there. Baird carried out further experiments with colour and large-screen television and also increased the definition of his system to 600, and then as high as 1000 lines (almost as high as the current high-definition specifications!),</div> <div> The war then intervened and he moved to Hastings. The South Tower was demolished together with the North Tower, but after the war a new television mast was erected on the South Tower site. What Baird did during the war is still not clear, although he certainly had a role to play with radar and aircraft navigational aids.</div> <div> There has long been argument whether Baird or Philo T Farnsworth (or even EMI) should be given the accolade of 'Inventor of Television'. Like Baird, Farnsworth certainly demonstrated the principles involved, but EMI developed another and later system using only part of Famsworth's work. Earlier, Baird had demonstrated, albeit with very crude home-made equipment, that television was possible. There should be no dispute - the garland belongs to Baird.</div> <div> Baird died at Bexhill in 1946. His health had never been good and on several occasions during his working life he had had to stop his research to convalesce. His house at Bexhill has now been replaced by Baird Court (a block of flats) but there is a blue plaque on the wall of his London lodgings.</div> <div> <I>Ephraim Pemberton</I></div> <div> <I>With grateful acknowledgement to Richard G Elen for his comments on this article.</I></div> <div> <B><U>Notice Board - Wanted and For Sale</U></B></div> <div> The Notice Board is for all club members to use so if you have one or more items that you wish to buy or sell then please send in the details. The current list of items may be viewed at: <A HREF="http://www.g3oou.co.uk/" TARGET="_top" TITLE="http://www.g3oou.co.uk/"><U><U>http://www.g3oou.co.uk/</U></U></A> </div> <div> in the "Notice Board - Wanted and For Sale" section.</div> <div> Wanted:</div> <div> <B>SWL club member </B>looking for a VHF multimode receiver covering at least 144-146MHz. Contact Victor on 020 8653 2946 or Bob on 01737 552170.</div> <div> <B><U>For Sale:</U></B></div> <div> <B>Ken G3DJK </B>has a PCI Firewire Card 1349A, Maplin Code A49HH (new and unused).  Best offer secures. Contact Ken on 020 8679 2717</div> <div> <B>Mode Components</B> has a website at <A HREF="http://www.modecomponents.co.uk/" TARGET="_top" TITLE="http://www.modecomponents.co.uk/"><U><U>http://www.modecomponents.co.uk/</U></U></A> and can be contacted on 0121 554 5157 or 07984 071369.</div> <div> Email at <A HREF="mailto:sales@modecomponents.co.uk" TARGET="_top" TITLE="mailto:sales@modecomponents.co.uk"><U><U>sales@modecomponents.co.uk</U></U></A> or</div> <div> <A HREF="mailto:modecomponents@yahoo.com" TARGET="_top" TITLE="mailto:modecomponents@yahoo.com"><U><U>modecomponents@yahoo.com</U></U></A></div> <div> <B>Sycom</B> run by Robin G3NFV supplies a range of electronic components & new/second hand equipment. The web site can be found at: <A HREF="http://www.sycomcomp.co.uk/" TARGET="_top" TITLE="http://www.sycomcomp.co.uk/"><U><U>http://www.sycomcomp.co.uk/</U></U></A></div> <div> <B>JAB Electronic Components, </B>PO Box 5774, Birmingham, B44 8PJ supply a wide range of electronic components and can be contacted on 0121-682-7045 or by email at: <A HREF="mailto:jabdog@blueyonder.co.uk" TARGET="_top" TITLE="mailto:jabdog@blueyonder.co.uk"><U><U>jabdog@blueyonder.co.uk</U></U></A></div> <div> 73</div> <div> <IMG SRC="33935330.jpg" border=0 width="53" height="51" ALIGN="BOTTOM" HSPACE="0" VSPACE="0">G3OOU</div> <div> <TABLE BORDER="2" CELLPADDING="1" CELLSPACING="1" WIDTH="638" BORDERCOLORLIGHT="#C0C0C0" BORDERCOLORDARK="#808080" FRAME="BOX" RULES="ALL" HSPACE="0" VSPACE="0" > <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="628"><div> <B>Diary of External Events</B></div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="628"><div> <B>27 September - West London Radio & Electronics Show</B></div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 133 WIDTH="628"><div> Kempton Park Racecourse, Sunbury-on-Thames, Middx, which is located half a mile from J1 of the M3 and is well signposted from the motorway. The racecourse is readily accessible by road and ideally situated to benefit from the motorway links between the M4/M3 and M25.</div> <div> Kempton Station is now open on Sundays. You should travel by train to Kempton station on the London Waterloo to Shepperton line. Kempton station is a 10 minute walk from the racecourse.</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="628"><div> <B>2-3 October National Hamfest</B></div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 38 WIDTH="628"><div> Newark Showground, A46 and A52 junction of A1. The nearest mainline railway station is approximately 1.5 miles from the showground.</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="628"><div> <B>9-11 October - RSGB Convention</B></div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 19 ><NOBR><div> Wyboston Lakes Conference Centre, Bedfordshire. Web: <A HREF="http://www.rsgb.org/rsgbconvention" TARGET="_top" TITLE="http://www.rsgb.org/rsgbconvention"><U><U>www.rsgb.org/rsgbconvention</U></U></A>.</div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="628"><div> <B>13 & 14 October - EMCUK Exhibition & Conference</B></div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 153 WIDTH="628"><div> Newbury Racecourse, Newbury, Berkshire RG14 7NZ. Visitors will be able to meet members of the RSGB EMC Committee on their stand in the main exhibition hall. The stand will feature the Society's work on interference issues and HF signal strength measurement together with demonstrations of the emission from Power Line Telecommunications systems. There will be a bookstall selling RSGB and ARRL books including the latest Radio Communications Handbook - all at member's prices. Admission to the exhibition and to the IEEE's EMC demonstration bench sessions is free. Tickets are available from www.emcuk.co.uk.</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 39 WIDTH="628"><div> <B>A full list of rallies and events may be found at </B><A HREF="http://www.rsgb.org/events/index.php" TARGET="_top" TITLE="http://www.rsgb.org/events/index.php"><U><B><U>http://www.rsgb.org/events/index.php</U></B></U></A><B> </B></div> </tD> </tR> </TABLE></div> <div> <B><U>News from other Clubs</U></B></div> <div> <B>Club Secretaries</B> - please send your meeting programs to Bob G3OOU. Our newsletter is now published during the third week of each month and closes for editorial input at the end of the second week. Due to differing publication dates and short lead times it is sometimes difficult to include other clubs' specific events although we will endeavour to do so if advised in time.</div> <div> <B>Chelmsford Amateur Rado Society (CARS)</B></div> <div> Secretary Martyn Medcalf G1EFL Tel: 01245-469008. First Tuesday of each month at MASC, Beehive Lane, Great Baddow, Chelmsford, CM2 9RX. Essex. UK. Web: <A HREF="http://www.g0mwt.org.uk" TARGET="_top" TITLE="http://www.g0mwt.org.uk"><U><U>www.g0mwt.org.uk</U></U></A></div> <div> 06 Oct - AGM</div> <div> 03 Nov - "The Flexradio FLEX-5000A Software Defined Radio" - by Gwyn Williams G4FKH</div> <div> <B>Coulsdon (CATS) </B>2nd Monday every month, 8pm at St Swithun's Church Hall, Grovelands Road, Purley. Contact: Andy Jackson G8JAC, 020 8651 2727, <A HREF="mailto:G8JAC@champ1,freeserve.co.uk" TARGET="_top" TITLE="mailto:G8JAC@champ1,freeserve.co.uk"><U><U>G8JAC@btinternet.com</U></U></A></div> <div> 12 Oct - "Effective small antennas - the loop leads the way, Goubau explains</div> <div> why" by Professor Mike Underhill, G3LHZ</div> <div> 09 Nov - Annual CATS Quiz</div> <div> <B>Echelford Amateur Radio Society</B></div> <div> Secretary Tony Collier 2E1IDK, Tel 01932 564099, Email: <A HREF="mailto:anthony991collier@btinternet.com" TARGET="_top" TITLE="mailto:anthony991collier@btinternet.com"><U><U>anthony991collier@btinternet.com</U></U></A></div> <div> Web site: <A HREF="http://beam.to/ears" TARGET="_top" TITLE="http://beam.to/ears"><U>http://beam.to/ears</U></A></div> <div> Meets on 2nd and 4th Thursday of each month.</div> <div> Phone for details.</div> <div> <B>Mitcham & District Amateur Radio Society</B></div> <div> Secretary: Mike Knott G0WCR, 76 New Barnes Avenue, Mitcham, Surrey, CR4 1LF.</div> <div> Tel: 020 8764 4716</div> <div> Phone for details</div> <div> <B>Reigate Amateur Transmitting Society</B></div> <div> Secretary: Tim Trew G8JXV</div> <div> Tel: 01293 775278. Email <A HREF="mailto:rats@qsl.net" TARGET="_top" TITLE="mailto:rats@qsl.net"><U><U>rats@qsl.net</U></U></A></div> <div> Please note the change of meeting day to the 3rd Thursday, 7:30pm at RNIB Redhill College, Philanthrophic Road, Redhill</div> <div> <B>Surrey Radio Contact Club (SRCC)</B> 1st and 3rd Monday every month, 8pm at Trinity School, South Croydon. Contact: Ray Howells G4FFY on 020 8644 7589 or <A HREF="mailto:secretary@g3src.org.uk" TARGET="_top" TITLE="mailto:secretary@g3src.org.uk"><U><U>secretary@g3src.org.uk</U></U></A> for more details.</div> <div> 05 Oct - Autumn Surplus Equipment Sale</div> <div> <B>Sutton & Cheam RS.</B> 3rd Thursday every month, 8pm at Sutton United FC, The Borough Sports Ground, Gander Green Lane, Sutton. Contact John Puttock G0BWV on 020 8644 9945</div> <div> 15 Oct - 'PLT (Power Line Transmission), The Future Direction' by John Pink G8MM</div> <div> 19 Nov - 'WSPR (Weak Signal Propogation Reporter)' by Walter Balnchard G3JKV</div> <div> 10 Dec - Christmas Junk Sale</div> <div> <B>Wimbledon. </B>2nd and last Friday every month, 8pm at Martin Way Methodist Church, Buckleigh Avenue, Merton Park, SW19 9JZ</div> <div> Contact Jim Bell, M0CON on 020 8874 7456</div> <div> 25 Sep - Summer Camp Roundup</div> <div> 09 Oct - Construction Evening</div> <bR> </td> </tr></table></body>