RadCom October 2012, Vol. 88, No. 10

| October 3, 2012

Cover of RadCom October 2012RadCom is the Radio Society of Great Britain Members’ magazine and is sent free every month to Members of the Radio Society of Great Britain.

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Contents RadCom October 2012

Members log-in is required to read the magazine online

News and Reports

  • 6 RSGB Matters – Including Contacts, the RSGB position on Powerline Adapters & FprEN50561-1, Society Matters, Advance Notice of the RSGB EGM, Volunteer Vacancies, QSL Matters, New Members and Congratulations
  • 11 News – News from the world of amateur radio
  • 14 EME 2012 at the NRC – Delegates to the EME 2012 conference in Cambridge had a chance to look around the National Radio Centre first…
  • 16 Strategy and Governance Proposals – Update on the Interim Board Strategy and Governance proposals first published in August
  • 81 Around Your Region – Club news and planned events around the country


  • 24 Elecraft P3 Panadapter and K3 Transceiver Revisited – Peter Hart, G3SJX looks at new modules that weren’t available when the K3 appeared in early 2008
  • 75 Book Review – The RSGB Yearbook 2013 Centenary Edition, Callseeker plus 2013 on CD or USB Memory Stick and the Deluxe Logbook & Diary 2013 examined by Giles Read, G1MFG

Technical Features

  • 20 Homebrew – A look at audio amplifiers with Eamon Skelton, EI9GQ
  • 34 Design Notes – Andy Talbot, G4JNT sorts through a mixed bag of feedback
  • 36 Data – All the latest on digimodes with Andy Talbot, G4JNT
  • 38 Start Here – John Welsh, G0NVZ considers our local star and its effect on amateur radio
  • 41 The Moxon Claw Revisited – Phil Harman, VK6APH describes a compact, high performance beam for 14, 18, 21, 24 & 28MHz based on the work of Les Moxon, G6XN
  • 45 The ‘Number 8’ Dummy Load – An oil-filled radiator transformed into an HF dummy load by Mark Atherton, ZL3JVX
  • 68 EMC – Dr David Lauder, G0SNO looks at professional measuring antennas, solar PV installations, plasma TVs, battery chargers and Freeview boxes


  • 19 RS Reports – David Barlow, G3PLE explains everything you need to know to give meaningful RS(T) signal reports
  • 28 RSGB Convention – Elaine Richards, G4LFM gives a flavour of what to expect and reveals the provisional lecture timetable with well over 50 talks in five parallel streams
  • 70 Safety First – Only luck saved Steve Anderson, G0EAT from more serious injury – it did happen to him…
  • 76 The best laid schemes o’ mice an’ men…
    …were not equal to the trials and tribulations that befell Bob Bower, GM4DLG when he organised his maritime mobile DXpedition


  • 91 Advertisers index
  • 54 Antennas, Peter Dodd, G3LDO
  • 64 GHz, Sam Jewell, G4DDK
  • 60 HF, Don Field, G3XTT
  • 39 IOTA, Martin Atherton, G3ZAY
  • 58 LF, Dave Pick, G3YXM
  • 80 Propagation, Gwyn Williams, G4KFH
  • 66 QRP, George Dobbs, G3RJV
  • 87 Members’ Ads, Rallies and Events, Silent Keys and Special Event stations
  • 72 Sport Radio, Steve White, G3ZVW
  • 92 The Last Word
  • 62 VHF/UHF, David Butler, G4ASR

Information for RadCom readers


© 2012 Radio Society of Great Britain. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior written permission of the Radio Society of Great Britain.

Errors and Omissions

Whilst the Radio Society of Great Britain—the publisher—takes all reasonable care in the production of RadCom, we can accept no responsibility for errors, inaccuracies or omissions contained within the magazine or any subsequent loss arising from any use thereof. Reliance placed on the contents of RadCom is at the reader’s own risk. We urge any reader to take all precautions appropriate to avoid any loss or damage to equipment and ensure the personal safety of themselves and others when using material contained in RadCom. It should be also noted that patent or copyright protection may exist in relation to any items within this magazine. The RSGB does not accept any responsibility for failing to identify any such patents, copyright or any other protection.

Readers are also reminded that the use of radio transmission and reception equipment—including scanning—is subject to licensing and the erection of external aerials may be subject to local authority planning regulations.


Although RSGB staff and the staff of Danby Advertising—its Advertising Agent—take reasonable precautions to protect the interests of readers by ensuring as far as practicable that advertisements in the pages of RadCom are bona fide, the magazine and its publisher, the RSGB, cannot accept any undertaking in respect of claims made by advertisers, whether these advertisements are printed as part of the magazine, or are in the form of inserts. Under no circumstances will the magazine accept liability for non-receipt of goods ordered, late delivery, or faults in manufacture. Legal remedies are available in respect of some of these circumstances, and readers who have complaints should address them to the advertiser or should consult a local Trading Standards Office, a Citizens’ Advice Bureau, or their own solicitors. The publishers make no representation, express or implied, that equipment advertised conforms with any legal requirements of the Electromagnetic Compatibility Regulations 1992. Readers should note that prices advertised may not be accurate due to currency exchange rate fluctuatons, or tax changes.

Category: RadCom