ECLECTIC AETHER - Adventures with Amateur Radio


I'm sorry that my website hasn't been updated much recently.

Since being forced to update to WEB's builder version 3, all of my previously produced pages are no longer formatted correctly and I can't easily edit the content without introducing other problems.

WEB's technical support has advised me that I need to reformat every page, copy and paste my previous text and re-add all the links to photographs and drawings into the 'new editor', so unfortunately it's going to take some time to complete this task.


Hi All,


Welcome - I hope you enjoy reading my pages, which I've tried to make useful and entertaining for readers.

I used to work as a Technical Manager in the Broadcast industry, and have been a licensed radio amateur for more than 40 years.

This website mainly reflects my interests in radio communication, experimentation and construction, but a few other items may occasionally appear.

I'm one of the Admins for the SUWS WEB SDR  - 

I also operate a KiWi WEB SDR which covers 0-30MHz  -

This is connected to my Patented TC2M broadband HF antenna -


Please don't hesitate to contact me, especially if you spot any errors or omissions.




Martin - G8JNJ



Active Antennas - Added MLA-30 Loop Sept 2019

50MHz Mixed Mode Omni Antenna

Mixed Mode Helical Antennas

Broadband Vertical antennas Comet CHA-250B & Diamond BB6W & BB7V

G8JNJ Broadband HF Vertical Antenna - Requires no tuner

HF loop antennas

1m HF loop antenna - Uses a novel tuning capacitor - RADCOM antennas column Sept / Oct 2010

G8JNJ ‘Fat-Max ® ’ HF Antenna - 6m to 40m - the poor man's Steppir

HF Variable Pitch Helical antennas DG7PE & Chameleon V1

Loft and Attic antennas for restricted places

33ft Verticals and Ununs

G7FEK Multiband compact garden antenna

M3KXZ no-counterpoise antenna - Does it actually work ?

Slinky antennas - Compact antennas made from Slinky toys are likely to be poor performers

Solarcon / Antron A99 - How well does it work on other bands ?

Portable Vee Dipole - Uses fishing poles and a lighting tripod

Broadband Terminated Vee antenna - A travelling wave antenna using 9:1 Ununs & a 50 ohm terminating load

Rotary Washing line antenna - Various antennas using hardware from scrap rotary washing lines

Washing line wire reel antenna - A cheap portable antenna

Low Band Wire Antennas - Which is the best ?

HF Antenna Switches - Remotely select a Doublet, Tee or Vertical - for use with a 100w tranceiver

Multiband Wire HF antennas - Thoughts on the G5RV and similar designs

Better than a G5RV - the ZS6BK / G0GSV multiband HF antenna  - External site

More information relating to ZS6BK antenna and matching section - External site

Baluns, Tuners & Matching

Audio & Processing

FM on the LF Bands  - How much spectrum does a Narrow Band FM transmission occupy

SSB TX audio equaliser - Published in Radcom February and March 2009

Build an audio Processor and clipper

Boom microphone for Yaesu FT-857 / FT-897 & Icom IC-7000 - modify a cheap PC headset

Modifying Clansman Military Headsets - use with Yaesu FT-857 FT-897 Icom IC-7000

FT-897D - Audio processing and ALC operation


VDSL Interference - Added Sept 2017

Other Stuff

Older projects

All other miscellaneous projects can be found by clicking on this page link


  • ‘Manhattan’ or 'New Amsterdam' Style construction - Added Dec 2014
  • 40m Antenna Shootout - Added June 2014
  • Switched X dipole / Vee Beam
  • Christmas Light - Vertical Antenna

Other items have now been moved to separate pages


This page has links to other great Websites, Software, Reviews and Other Associated stuff !

About G8JNJ

Details of my previous Amateur radio activites can be found by clicking on this link