MARTIN - G8JNJ

ECLECTIC AETHER - Adventures with Amateur Radio

WEBSITE Status

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.

Welcome

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  - http://websdr.suws.org.uk/ 


I also operate a KiWi WEB SDR which covers 0-30MHz  - http://southwest.ddns.net:8073/


This is connected to my Patented TC2M broadband HF antenna - http://www.tc2m.info/

 

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

 

Regards,

 

Martin - G8JNJ

 

Antennas

Active Antennas - Updated April 2018


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



EMC

VDSL Interference - Added Sept 2017


Other Stuff


Older projects


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


Including:-

  • ‘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

Links

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

 




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