RadCom March 2013, Vol. 89, No. 3

| February 16, 2013

Cover of March 2013 RadCom showing a radio ham checking an antenna for winter storm damage

RadCom 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 March 2013

News and Reports

  • 6 News
    All the amateur radio news
  • 9 RSGB Matters
    Including New Beginnings, Promoting Amateur Radio, Society matters, AGM 2013, Elections 2013, QSL matters, New Members and Congratulations
  • 12 RSGB Centenary
    RSGB Centenary Year news including Gx100RSGB, Anniversary Day and the Centenary Award
  • 64 Committee Reports
    Details of the work that RSGB volunteers have undertaken in 2012
  • 78 Around Your Region
    Club news and planned events around the country
  • 91 Contacts
    All the contact information for the RSGB including Committees and Regional Managers


  • 52 Peak Atlas DCA Pro
    Andy Talbot, G4JNT is impressed by this high-tech component analyser that works standalone or with a computer
  • 41 Book Review
    A treasure-trove of QRP circuitry plus anecdotes from the seven seas reviewed by Giles Read, G1MFG

Technical Features

  • 14 Homebrew
    Eamon Skelton, EI6GQ makes some high performance crystal filters and an IF amplifier
  • 18 Solar cycles and F-Layer propagation
    Cycle 23 may still hold some surprises, writes Jim Kennedy, K6MIO/KH6
  • 25 The ‘Perfect’ VOX?
    Giles Read, G1MFG develops an experimental voice operated switch that should never miss your first syllable
  • 32 Start Here
    A tuneable bandpass filter for MF and 472kHz by John Welsh, G0NVZ
  • 34 Design Notes
    Andy Talbot, G4JNT works on integrated frequency multipliers and a VHF beacon driver source
  • 37 A novel 472 – 479kHz antenna
    If you want to play on the new MF band but haven’t got room for a huge antenna, this compact and non-critical design by Roger Lapthorn, G3XBM may be just the ticket


  • 30 Getting started in… Beacons
    The second and final part of the fascinating article by Prof Martin Harrison, G3USF
  • 42 A new band at 5MHz
    Ian Greenshields, G4FSU explains the new 5MHz allocation for Full licensees and explores its characteristics


  • 87 Advertisers’ index
  • 23 Antennas, Peter Dodd, G3LDO
  • 73 ARDF, Bob Titterington, G3ORY
  • 46 ATV, Roy Powers, G8CKN
  • 60 GHz Bands, Dr John Worsnop, G4BAO
  • 55 HF, Don Field, G3XTT
  • 88 Members’ Ads, Rallies and Events, Silent Keys, Special Event Stations
  • 40 Propagation, Gwyn Williams, G4KFH
  • 73 Sport Radio, Steve White, G3ZVW
  • 92 The Last Word
  • 57 VHF/UHF, Sam Jewell, G4DDK

Category: RadCom