RadCom April 2015, Vol. 91, No. 4

| March 19, 2015

Cover of April 2015 RadCom - Cover image: The QTH of Bob Macleod, VP8LP and his XYL Janet, VP8AIB on the Falkland Islands. Photo: Bob Bower, GM4DLG

News and Reports

6 RSGB Matters
Calling Notice for the 2015 AGM, Club of the Year winners, Board and regional election results, volunteer vacancies, RSGB response to Ofcom UHF consultation, spotlight on the Planning Advisory Committee and the DRM for Suffolk, Train the Trainers news, new joiners, rejoiners and congratulations
12 News
All the amateur radio news
14 New Products
Exciting new products we’ve heard about this month
38 Committee Reports
Full reports on the work undertaken on behalf of RSGB Members in 2014 by the various RSGB Committees
60 AGM Financials and Voting
Financial reports on RSGB activities in 2014, plus the two Resolutions for this year’s AGM and how to register your vote
87 Around Your Region
Club news and planned events around the country

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36 Per ardua ad VP8
Bob Bower, GM4DLG describes Exercise Sturdee Ham—The RAFARS DXpedition to the Falkland Islands
70 The Story of GB3EX
Teamwork, trials, tribulations and triumphs of getting a new repeater on the air, described by Pete Longhurst, G3ZVI
71 SSTV Without Radio
You can have fun receiving SSTV images and other modes without a radio in sight, reports Giles Read, G1MFG


26 Folding Antennas Hexbeam
David Aslin, G3WGN is impressed by a 20-10m multiband antenna for small gardens, portable and DXpedition use
81 Book Review
Giles Read, G1MFG enjoys Hart Reviews and My Adventures As A Spy

Technical Features

16 Design Notes
Andy Talbot, G4JNT looks at noise—generating it, measuring it, calibrated sources and more
18 Enclosures
Klaus ‘Cliff’ Spies, WB9YBM shares his thoughts on enclosures for homebrew projects
20 Homebrew
More on the high quality single band 10m transceiver with Eamon Skelton, EI9GQ
25 Data
Andy Talbot, G4JNT reports on a new HF chat mode and methods of digging signals out of the noise
32 Raspberry Pi in the Shack
In the final part of his series, Mike Richards, G4WNC reveals an improvement to the Raspberry Pi dongle server and designs a shack security system
58 EMC
Draft interference regulations, PLT MIMO, fluorescent tube QRM, 4G networks, railway EMC and a wireless charging system exercise—Dr David Lauder, G0SNO
80 The Windom
Andy Choraffa, G3PKW clears up some myths about the off-centre fed dipole
86 Moving On
Part one of a look at baluns with John Welsh, G0NVZ


99 Advertisers’ index
50 Antennas, Peter Dodd, G3LDO
78 GHz, Dr John Worsnop, G4BAO
74 HF, Martin Atherton, G3ZAY
72 LF, Dave Pick, G3YXM
103 Propagation, Gwyn Williams, G4KFH
52 QRP, Rev. George Dobbs, G3RJV
100 Members’ ads, rallies and events, Silent Keys and special event stations
82 Sport Radio, Steve White, G3ZVW
104 The Last Word
76 VHF/UHF, Richard Staples, G4HGI

Category: Front Page News, RadCom, RSGB Notices