DX Commander 40m 3 element vertical array £299
Perhaps you've seen the YouTube video - or had a copy with me whilst I was using just this system? Hours of planning, modelling and experimentation both in software with MMANA and also real-world testing has finally produced an excellent and extremely economical method of producing excellent DX gain in one ...
Antenna Tow Ball Mount
(Note: Stock arriving mid-August 2021) IMPORTANT NOTE: This is an experimental tow-ball mount. Under test, I achieved some extreme loading however I can take no responsibility for anything going wrong. Playing with portable antennas inevitable leads to the odd "accident". So please do your own risk-assessment by calculating what would happen in any failure and ...
DX Commander Bare Bones Complete 10m Multi-Band HF Vertical
All products that include the Classic Pole starts shipping 3rd Week June 2020 SEE LATEST DX Commander ABV Release Notes 2017 I listened! Some of you wanted an economical bare-bones system without all the little "bits". Here it is! Note: UHMWPE is suitable for world-wide QRO operation. Of course QRP will work just the same. This is ...
DX Commander all-band conversion kit
This is the QRO conversion kit uses new UHMWPE plastic parts and 3mm pure Aluminium 1050 for improved efficiency. It's taken me a few years to get the dimensions "just right" and is the expensive part of the project. All new plastic UHMWPE plates have new hole pattern for either 3, 4 or ...
DX Commander CLASSIC (40m - 2m) HF Multi-Band Vertical Kit
This is for the Classic (original) version of the DX Commander vertical antenna (40m - 2m) This comes as a KIT which includes the 10m DX Commander telescopic pole, the aluminium and UHMWPE plate set, all nuts, bolts, washers, fork connectors etc and 100m DX10 Wire on a factory packed roll. Rated ...
M0MCX Banana Antenna - an end-fed choke sleeve resonant feedline T2LT antenna design
A new document fully documenting the design of the Banana Antenna has now been released entitled, "Banana, a Half Wave End-Fed Choked Coax Antenna". Antenna can be known as - and is similar to: Sleeve Dipole / Flowerpot Antenna The Sleeve dipole has traditionally been used by VHF antenna designers by sliding an ...
JT65 UK Band Plan and how to stay within
The 5 MHz band is pretty cool and I've written about it before however out the box, JT65 allows you to very easily transmit out of band on 60m band. The segment we're interested in the UK is the freq block between 5.354 and 5.358. This has taken me a little ...
Introduction to the 60m Band Plan (5 MHz)
60m is an interesting band. it's partly channelised into small segments and the propagation is a cross-breed of 40m and 80m.The band was first introduced apparently in 2002. Over the years, various countries have allowed their amateurs radio operators to use the band. All this is negotiated and approved in conjunction ...10m Telescopic Classic Antenna Support Pole DX Commander
The original DX Commander Classic Telescopic Pole. These are the best selling heavy duty telescopic antenna support on the market. These poles come packaged brand new, 1.2m length with a protective plastic see-through snap-top temporary dispatch bag. They telescope to at least 9.6m in length (sometimes a bit more depending on factory ...
Working 15m band on a 40m vertical antenna
Note: This article discusses the merits of a 3/4 (three quarter wave) vertical -vs- a 1/4 (quarter wave) antenna. You can build a 40m vertical quarter wave antenna and ground mount it with 16 x 4m radials and operate it at the third harmonic; 21MHz. Actually, all my experimentation has shown that ...
Converting a 40m vertical to run on 80m / 75m band
Recently, I created a slightly loaded 40m vertical with 25 ground radials. It seems to work very well although the receive noise is pretty lousy compared to my loops and dipoles, however on transmit, it does seem to work as planned; a typical 1/4 wave pattern that outperforms regular dipoles at low angles of ...
Raising Steel Antenna Mast on T&K brackets with pulley
I'm gradually swapping out any aluminium antenna poles for steel. Clearly these are very heavy, particularly with an antenna on top. The trick is to use V bolts (like U clamps but in a V shape) and not to use saddle clamps because the pole will not slide easily past the ...
How to make a stealth amateur radio wire antenna
Until recently, I had a) a 40m triangular loop in the back garden which I called a "micro-mega-loop" and b) a 60m loaded loop that allowed me to get on 80m. The two loops looked a bit horrendous not only because of the wire in the air, but because I ...
Special Event Operating Procedures
This note will be particularly beneficial to those who may be required to run a special event station either on the lower bands or maybe on VHF. These tips & tricks will also help you anywhere on the band, regardless of your circumstances. Preface: There are a number of aspects that ...Lorem Ipsum is simply dummy text of the printing and typesetting industry.
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Watch the video in conjunction with the user-guide.
Based on a 7m telescopic pole (circa 6.8m) and will work from 40m through to 2m band. Incredible.
Cut Chart as follows. Cut your elements this long (in metres – not feet : )
- 30m 7.99 (includes 2 x 6cm loops and a 1.29m return off the top)
- 20m 4.95 (all these have a 6cm loop incorporated into this cut chart)
- 17m 3.85
- 15m 3.29
- 12m 2.81
- 10m 2.50
To clarify: Taking the 10m band for instance, cut your element at 2.50m exactly and fold-back a loop of 6cm which makes the new total length of 2.44m.
Want feet and inches? Just Google “convert 2.81m to feet and inches” (for instance).
James, G1JSP, who goes under the handle of Jimbo888 on YouTube, sent me this amazing “spike” that fits onto the bottom of the DX Commander which is held in place with the screw cap.
Feel free to download the file and print the component off 
The file is located on my Google Drive here:
https://drive.google.com/drive/folders/1CXmBpQMF4qzl5b_O0PK48fdcZKu-VlKc?usp=sharing
I am inviting folks who are a little more isolated than others to pop in at 11:00am each morning.
All you need to do is get your callsign in my log and I’ll call you in for a 30-second over in time.
If the net is too big, I can invite a secondary net to drop down 3kHz etc.
To check for accuracy, you can cut a 90 degree section of coax and short out the end. Attach to your analyser and you should get zero SWR at the target frequency. Just a tip.
Here Is the Excel Spreadsheet: phasing harness calcs
DOWNLOAD HERE >> 40m 2-ele delta loop <<
Remember, DON’T email me, but comment on the channel. Thanks!
- DOWNLOAD m0mcx sample contest logbook
Confused? See the film here:
This is a ZIP file. Obviously take necessary precautions when unzipping etc. I’ve had this installed for about 2-months.
NOTE: It’s a self executing program file. It doesn’t need DLLs and doesn’t “install” itself in Windows. It just runs from the install directory and you can move it around, say on a USB stick if you like.
Here’s the spreadsheet:
EXCEL: <quarter wave vertical calculator> link
Here’s me on 15m during IOTA 2017:
(100 Watts, recorded straight out the TS590SG into Audacity)
Antenna: DX Commander Vertical 80m-10m