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  • This is actually three separate dipoles connected to one feepoint
  • 3 element 40m array aiming USA for 6db extra gain (over vertical)
  • Kenwood TS-990s
  • Single vertical with rainbow (SSB Field Day 2013)
  • More field day antics running FT-1000MP and the Acom
  • Too much RF for the wrong frequency (4:1 balun, 400w 160m)
  • Typical stream-lined field day arrangement
  • I've had a "mohawk" since 2007. The benefits of running my own company!
  • Three antennas, left to right: 70cms, 2m and 6m, all at 10m AGL
  • Obligatory evening shot of a three element 40m array
  • I make stuff too, these are mast guy points for aluminium tubes
  • TS-2000 remote controller in my Merc
  • Callum (M0MCX) running
  • 15m and 10m fan dipole arrangement test
  • Kenwood TS-990s at M0MCX shack
  • VHF Field Day 2008 M0XXT
  • Two radios on the cheap
  • A3S Tribander (bottom), 40m two-ele beam and switchable 80m dipoles on top (135 feet)
  • "Taylor Made" keypad for TS-990s
  • Aircell 7 PL259 connector
  • A3S on top of 3-section aluminium scaffold tubes experiement
  • How we got confused switching too many antennas CQWPX 2008
  • Scaffold tilt-over tower arrangement

Randoms

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2014 VPA

Poles are 9.6m in length. Rear reflector is mild helically wound to achieve extra 40cms
VPA beaming North West
Location of house -vs- Atlantic
Looking East from the front of the array
Obligatory evening photo of antennas
Acom showing great SWR and 400w CW
MFJ.. never seen such a good SWR (not actually a sign of efficiency)
Construction of feepoint base showing radials
Feedpoint and ground radial assembly
Parasitic feedpoints, showing temporary connector to measure SWR
Element can't touch the guying point for fear of flash-over
Guying system
3d-plot from MMANA
Comparison plots using MMANA modelling s/w
- none

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Now Shipping to UK EU Canada USA and AUS (ZL by arrangement)

Now Shipping to UK EU Canada USA and AUS (ZL by arrangement)

Library

  • Simple Spreadsheet Contest Logger
  • Camdesk 1.2.1 Download
  • 1:1 Baluns. Myths, Facts and Fiction. How to build Ugly Baluns, Air Wound or Ferrite Chokes?
  • What is NVIS and why do you need a special aerial?
  • Fan Dipoles for Ham Radio Made Easy Overview How To
  • 40m Vertical Antenna – Phased Array or Vertical Yagi? Achieving MASSIVE gain on low bands
  • Best First Amateur Ham Radio HF Antenna for New Operators
  • My first Ham Radio HF Rig. How do I decide?
  • How to Live Stream your Ham Radio Club Station or Home Shack for Special Events and Contests
  • How to cause massive Ham Radio QRM with your ALC in Digi Modes
  • Fix local QRM & QRN in your home Amateur Radio Station in 10 minutes
  • How to Connect XLR 3 pin connector to your 8-Pin Radio
  • Ham Radio Antennas – Verticals or Dipoles – so what’s best?
  • Electrovoice RE20 unboxing ultimate ESSB microphone for ham radio
  • Heil Sound Ham Radio Pro 7 Headset Review
  • How to build a monoband HF Vertical Quarter Wave Ham Radio Antenna
  • Is a Dipole better than a Cobweb Antenna? Ham Radio Aerials.
  • How good is a G5RV and how do they work? Ham Radio Antennas.
  • Dual-Banding your 40m vertical for 15m. Good idea? Ham Radio Antennas
  • How to build an Inverted L for the low-bands (40m, 80m and 160m)
  • How to make a quarter-wave vertical mono-bander
  • How high should my dipole be?
  • What is the report for the IOTA contest
  • Quarter Wave -vs- 5/8ths Wave Vertical
  • 4-Element Home-Brew Folded Dipole Yagi Dimensions
  • Quick SWR Calculator for Vertical and Dipole Ham Radio Antennas
  • TOKYO HY-POWER HL-700B 600 Watt Amplifier purchase
  • Adding 80m to DX Commander All Band Vertical (9-bands 80m through 6m)
  • DX Commander Contest Antenna achieves top placed UK IOTA Station
  • Software Modelling your Vertical antenna ground radials with MMANA
  • DX Commander now shipping to USA / Canada / Aus
  • Vertical Antenna – How many Ground Mounted Radials Do I Need
  • M0MCX Banana Antenna – an end-fed choke sleeve resonant feedline T2LT antenna design
  • 20m band End-Fed Choked Coax Dipoles (T2LT)
  • 75 ohm to 50 ohm transmission line matching coax stub
  • JT65 UK Band Plan and how to stay within
  • 40m compact fan dipole for 40, 30 and 20m bands
  • Introduction to the 60m Band Plan (5 MHz)
  • 5.137 MHz 60m AM transmission test
  • DX Commander pre-production testing all-band vertical
  • Compact half-square for 40m band
  • Bidirectional switchable 40m wire yagi
  • How to use dual coax feeders as ladder line
  • Working 15m band on a 40m vertical antenna
  • How heavy is a Cushcraft A3S TriBander Yagi?
  • CQWW SSB 2014 Example QSO recordings
  • ACOM 2000 Flightcase
  • How to build a tilt-over 60 foot antenna mast from scaffolding poles
  • How to fit T&K brackets to the corner of a wall
  • How to join antenna wire together

Who is Callum M0MCX?

Callum lives near Solihull with his wife (Wendy) and two children. He owns an IT Recruitment Agency and is part owner of a web business.

Ham Radio Inspiration

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vertical-radiation-pattern
IMG_5650
MFJ.. never seen such a good SWR (not actually a sign of efficiency)
Close up of driven element. Only connect one element for VPA

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