RadCom January 2013, Vol. 89, No. 1

| January 1, 2013

Cover of January 2013 RadCom - Richard Byford, G4MKR, demonstrating amateur radio at the NRC.  Photo: RSGB

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 January 2013

News and Reports

  • 6 News
    All the amateur radio news
  • 9 RSGB Matters
    Including Society matters, EGM results, 2013 Board and Presidential elections, New Members and Congratulations
  • 12 RSGB Centenary
    Details of the exciting programme of events for the RSGB Centenary Year
  • 80 Around Your Region
  • 91 Contacts
    All the contact information for the RSGB including Committees and Regional Managers

Review

  • 36 Elecraft KPA500
    Peter Hart, G3SJX is impressed by this solid-state amplifier that effortlessly delivers 500W from 26-38W of drive
  • 52 Super Antenna MP1B Superstick
    A very well made, compact portable antenna for 10m-40m and, optionally, 80m, writes Steve Nichols, G0KYA
  • 54 Book Review
    Our top three favourite books of 2012

Technical Features

  • 18 Homebrew
    Eamon Skelton, EI5GQ designs a VFO amplifier and bandpass filter for the 40m direct conversion receiver project
  • 34 Design Notes
    Andy Talbot, G4JNT explains almost everything you need to know about frequency calibration and standards, including how to get within 0.01Hz at 10GHz
  • 42 Folding 2m Yagi
    A chance purchase at a car boot sale led Eric Lake, 2W0WXM to design a versatile portable antenna
  • 65 Start Here
    More on the Tesla coil project by John Welsh, G0NVZ
  • 68 A virtual laboratory
    Richard F Gillette, W9PE explains how a spreadsheet can demonstrate how mixers, modulators and product detectors work

Features

  • 14 RSGB Convention 2012
    Elaine Richards, G4LFM asks if this was the best-ever Convention
  • 22 Planning
    Planning Advice Committee chairman Stephen Purser, G4SHF explains how the Four Year Rule can be your friend
  • 23 ‘Spectrum Release’ and amateur radio
    Murray Niman, G6JYB looks at the pressures on amateur allocations in the UHF ‘sweet spot’
  • 26 All aboard for GB175PO
    P&O Ferries gave British and French amateurs unprecedented access to the ferry Spirit of Britain to celebrate their 175th anniversary with special event stations, explains Erwin David, G4LQI
  • 30 Getting started in… Repeaters
    Colin Dalziel, GM8LBC explains the ins and outs of these very useful community relay stations.
  • 40 AMSAT Colloquium 2012
    Elaine Richards, G4LFM learns more about amateur satellites and the work behind their construction
  • 64 RSGB Archives
    The National Radio Centre library houses over a century of history that is well on the way to being catalogued, writes Elaine Richards, G4LFM
  • 66 A standard for powerline telecommunications devices
    Chairman of the RSGB EMC Committee Dr John Rogers, M0JAV explains the RSGB involvement in the standard that was recently passed for EU-wide implementation
  • 78 The CDXC DX archive
    Alan Jubb, 5B4AHJ explains how back issues of this venerable publication are providing an invaluable information resource for Club Log today

Regulars

  • 87 Advertisers index
  • 24 Antennas, Peter Dodd, G3LDO
  • 75 ARDF, Bob Titterington, G3ORY
  • 46 ATV, Roy Powers, G8CKN
  • 61 GHz Bands, Dr John Worsnop, G4BAO
  • 55 HF, Don Field, G3XTT
  • 88 Members’ Ads, Rallies and Events, Silent Keys, Special Event Stations
  • 39 Propagation, Gwyn Williams, G4KFH
  • 90 QSL matters
  • 73 Sport Radio, Steve White, G3ZVW
  • 92 The Last Word
  • 58 VHF/UHF, Richard Staples, G4HGI

Extra

  • 41 Yaesu YA-30 broadband HF antenna
    A very special price on this high quality folded dipole that covers 1.9-30MHz without gaps – and at a VSWR of less than 2.5:1

Errata

Due to an editorial error, figure 1 and figure 2 on page 42 of the January 2013 RadCom are incorrect. Revised versions of the figures can be found at http://www.rsgb.org/main/membersonly/publications/radcomplus/Folding_Yagi_Errata_Jan_2013.pdf (1-page/20KB PDF – Members login required). The editorial team apologises for any inconvenience these errors may have caused.

Category: RadCom