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Call Sign : G1DBS - F4WEY Posts : 235 Times Thanked : 18 Join date : 2024-02-17 QTH or Location : Montreuil sur Mer Equipment Used : XIEGU G90 + XIEGU XPA125B
Subject: Vertical coaxial dipole for 11m Wed Oct 09, 2024 2:03 pm
I've been using an end fed vertical coaxial dipole on 10m for DX and it has been very successful. In fact, it performs better than I ever expected it to. Very low noise and low radiation pattern.
It occurred to me that the simple to build coaxial dipole might be a useful (and cheap to build) antenna for 11m, so I've transposed the measurements for 27.555mhz.
It can be attached to a fibreglass pole, hung in a tree, or even hung upside down from an upper storey window.
All you need to build this antenna is a few metres of coax and a piece of 68mm plastic pipe. Plus two cable ties or some duct tape.
This antenna is fairly wide band so should tune okay for the EU frequencies and UK FM.
Tip - make the top (driven) element a few mm longer for tuning.
Deb
GaryWilson, Victor, SangueG, Ace, Chris Brown, Hex and Spider281 like this post
GaryWilson CT Directors
Call Sign : 26-CT-1836 Amateur Radio Call Sign 2E0GGQ Posts : 4488 Times Thanked : 388 Join date : 2019-06-27 QTH or Location : Redcar, North Yorkshire. Equipment Used : Radios & Wires & Stuff! Age : 60
Subject: Re: Vertical coaxial dipole for 11m Wed Oct 09, 2024 2:13 pm
Thanks for this Deb,
I have used a T2LT for 10 and 11 meters for years. My findings concur with yours 100% I've had some great contacts with it. Easy to deploy and take down again if needed and for the price of making it you can't go wrong. I have found that although being a fairly forgiving antenna mine performs best on my large 10 meter fiberglass mast.
What's not to love?
Best 73 Gary.
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VanRougeT4 Major contributor
Call Sign : G1DBS - F4WEY Posts : 235 Times Thanked : 18 Join date : 2024-02-17 QTH or Location : Montreuil sur Mer Equipment Used : XIEGU G90 + XIEGU XPA125B
Subject: Re: Vertical coaxial dipole for 11m Wed Oct 09, 2024 2:24 pm
GaryWilson wrote:
I have found that although being a fairly forgiving antenna mine performs best on my large 10 meter fiberglass mast.
Hi Gary.
Mine is attached to a 12m telescopic fibreglass pole with the pole passing through the choke.
For the price of a few metres of coax and a 12m pole it's a no-brainer.
I think my contacts in the 2024 10m challenge prove the performance.
Deb
GaryWilson, Ace and Hex like this post
GaryWilson CT Directors
Call Sign : 26-CT-1836 Amateur Radio Call Sign 2E0GGQ Posts : 4488 Times Thanked : 388 Join date : 2019-06-27 QTH or Location : Redcar, North Yorkshire. Equipment Used : Radios & Wires & Stuff! Age : 60
Subject: Re: Vertical coaxial dipole for 11m Wed Oct 09, 2024 4:43 pm
Absolutely Deb, I now have mast envy!!
Best 73 Gary.
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Spider281 Contributor
Posts : 72 Times Thanked : 0 Join date : 2024-09-01 QTH or Location : England Equipment Used : All sorts
Subject: Re: Vertical coaxial dipole for 11m Sat Oct 26, 2024 9:42 pm
I tried this originally but the antenna is still 18 foot long and proved difficult to get it out of the side of the balcony, because my balcony is enclosed with a roof that over laps the front, it can't go straight I do however have a solution but with the antenna being so long it makes it difficult... its about the same as trying to get it out of a window, my balcony is pretty much a wide window.
Good antenna tho I wish I lived somewhere that was more radio friendly.
Today at 2:33 pm by Alan Pilot
Subject: Vertical coaxial dipole for 11m 
