RF Circuit Building Blocks Page

Mark Connelly, WA1ION - Billerica, MA, USA - rev. 20040521

 

Articles on This Site

  • How I Got Started in Radio and Electronics
  • Antenna Shoot-Out: Rowley, MA (PDF)
  • DXP-5A Lab Test Data (zipped Excel)
  • Medium Frequency Amplifier Circuits Compared (PDF)
  • Medium Frequency Amplifier Circuits Compared (zipped DOC)
  • Broadband Receiving Antenna Matching (PDF)
  • Broadband Receiving Antenna Matching (zipped DOC, drawings)
  • Buffer Amplifier Links Page (HTML)
  • Phased Spaced Antennas (PDF)
  • Phased Spaced Antennas (HTML / GIF's)
  • Flag Antenna Construction and Test Results (PDF)
  • Flag Antenna Construction and Test Results (HTML / GIF's)
  • New Termination Control Method for Flag, Pennant, and similar Antennas (PDF)
  • New Termination Control Method for Flag, Pennant, and similar Antennas (zipped DOC, drawings)
  • TMB-1 Tri-Mode Buffer Amplifier Box (PDF)
  • TMB-1 Tri-Mode Buffer Amplifier Box (HTML / GIF's)
  • FCA-1 Feedline Coupling Adaptor
  • Remote Termination of Beverage and Ewe Antennas
  • Loop Shoot-Out at East Harwich (PDF)
  • Loop Shoot-Out at East Harwich (zipped DOC, GIF, etc.)
  • Phasing Improves Kaz Antenna Nulls
  • W7IUV Amplifier Card
  • BBA-C1 Amplifier Card
  • AD9632 based Amplifier (schematic GIF)
  • ERA-5SM based Amplifier (schematic GIF)
  • Electrically-Short Dipole Antennas
  • VTL5C4 / VTL5C3 Vactrol Data Sheet (PDF)
  • Three-Loop Antenna Array (PDF)
  • Three-Loop Antenna Array (zipped DOC, GIF's, etc.)
  • Toroidal Core Application Worksheet (zipped Excel)
  • What Does Your S-Meter Reading Mean ? (Two Receivers Compared)
  • DXP-3 DXpedition Phasing Unit (PDF)
  • DXP-3 DXpedition Phasing Unit (zipped DOC, GIF's, etc.)
  • DXP-2 DXpedition Phasing Unit (PDF)
  • DXP-2 DXpedition Phasing Unit (zipped DOC, GIF's, etc.)
  • BBVA-A Broadband Amplifier
  • BUF-E Buffer Amplifier
  • BUF-F Low-Cost Buffer Amplifier
  • PSA-A Phase Shift Amplifier
  • Superphaser-1 Phasing Unit (HTML)
  • Superphaser-2 Phasing Unit (PDF)
  • Superphaser-2 Phasing Unit (HTML)
  • Mini-MWDX-6 Phasing Unit (PDF) (1995)
  • BFE-C Balanced Loop Front-End Amplifier Card (HTML)
  • MFJ-1026 low frequency enhancements (PDF)
  • Mini-DXpeditions (PDF) (1994)

     

    Articles on Other Sites

  • Passive Broadband Phasing (PDF) (2004)
  • Passive Broadband Phasing (zipped DOC, drawings) (2004)
  • Evaluation of Commercially Available Signal Splitters - Bowers, Bryant (2004)
  • Impedance Matching Transformers for Receiving Antennas at Medium and Lower Shortwave Frequencies - Bowers, Bryant, Hall-Patch (DOC) (2003)
  • Fabricating Impedance Transformers - John Bryant (DOC) (JUN 2003 update)
  • Fabricating Impedance Transformers - John Bryant (PDF) (MAY 2001)
  • Pennant and Kaz Antenna Tests - Mark Connelly (MAY 2001)
  • "Kaz Antenna" Tests by John Bryant (PDF) (APR 2001)
  • Sloper Antenna Tests (APR 2001)
  • Pennant Antenna with Remote Termination Control (HTML with GIF's)
  • Pennant Antenna article (PDF)
  • Pennant Antenna article: ZIP of Microsoft Word DOC file
  • Phased Array Discussions
  • K9AY Loop Review by John Bryant (PDF) (2000)
  • Palstar R30 Receiver Review by Gerry Thomas (PDF) (2000)
  • BBL-1 Broadband Loop Antenna, Part 1 (PDF) (1999)
  • BBL-1 Broadband Loop Antenna, Part 2 (PDF) (1999)
  • DXP-1 DXpedition Phasing Unit (PDF) (1999)
  • Remotely-Tuned Antennas (RL-1 loop, RW-1 whip) (PDF) (1996)
  • DCP-2 Dual Controller / Phaser (PDF) (1996)
  • DL-2 Delay Line Phasing Unit (PDF) (1995)
  • MWDX-6 Phasing Unit (PDF) (1994)
  • MWDX-5 classic R-L-C Phasing Unit (PDF) (1993)
  • MWT-3 Regenerative Tuner (PDF) (1993)
  • Another Look at Noise Reducing Antennas (PDF) (1992)
  • K9AY Loop Antenna
  • Al Merriman's K9AY discussion
  • Wellbrook products, including K9AY Loop
  • Remotely-Controlled Termination Beverage (Steve Byan)
  • Kiwa Loop versus RSM-105 tests
  • MFJ-1026 Phasing Unit Modifications and Field Tests
  • Craig Healy's DX Time Machine article (DX on your VCR) (PDF)
  • Radio Plus+ (Gerry Thomas web site)
  • 6x6 Loop (Graham Maynard)
  • RF Circuits (UK site)
  • Radio-Electronics.com
  • Loop Antenna site (James Dale)
  • Litz Wire - MWS Wire data page
  • Parts Vendors
  • K9AY antenna links
  • Flag and Pennant antenna links
  • Flag and Pennant Antenna Compendium

     

    Articles on ARRL Web Server (member name and password required)

  • AMRAD Active LF Antenna
  • Is this Ewe for You ?
  • More Ewes for You
  • K9AY Loop

     

    Circuit Cookbook Links

  • W8JI.com
  • DXing.com
  • N4XY schematic PDF's
  • VA3AVR Circuits for the Hobbyist
  • Web EE Schematics
  • Discover Circuits
  • Practical RF
  • W8WWV Experimentation
  • OH5HOI tech page
  • Electronix Express links
  • Circuits Archive
  • Tomi Engdahl circuit site
  • Bill Bowden circuit site
  • Technical Library
  • Imagineering On-Line Magazine circuits
  • Aaron's Electronic Circuits
  • Electronics Zone
  • Circuit Central
  • 4QD-TEC circuit index
  • Forrest Cook's circuit page
  • Nuts and Volts magazine
  • Chip Directory
  • Electronics Hobby Page

     

    more will be added later ...

    Please feel free to send any comments to me at e-mail: MarkWA1ION@aol.com

    Click here for: WA1ION DX Labs Web Links