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

What is NVIS and why do you need a special aerial?

How to make high quality local contacts within a 500 mile radius.

See also:

Quick SWR Calculator for Vertical and Dipole Ham Radio Antennas

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Library

7m Rapide gets User Guide
DX Commander Short-Spike for ground stability – 3D Printing
3.780 Lock Down Net Mon-Fri Daily
Phasing Harness Calulator for 71 and 84 degrees
Modelling a 2-element Delta Loop for 40m
How big is the DX Commander box?
DX Commander Lite Youtube Playlist
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

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

Policy Documents

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