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Ultra portable Yagi Antenna


#1

Hello, i just published 2 antenna designs with 3D printed parts. One is 3 el. 2m and second is 2+3el. duoband 2m/70 cm. If you have access to the 3D printer, you can make your own. Design is opensource.

2m/70cm version http://www.thingiverse.com/thing:846442
2m version http://www.thingiverse.com/thing:845444

73 Ondra OK1CDJ


#2

Nice! I tried one like that ages ago and I know very well why you have written “Not good for windy weather.” :smile:

They are great in space though. The early Oscar satellites used tape measures for antennas.


#3

Looks a good design! I am pleased to see that the tape measures are 100% metric! Why in this country we have not fully changed, I will never know?

We drive in miles and measure fuel consumption in miles per gallon, yet we buy in Litres!! It’s utter madness!!! 4 pints of milk for 99p, industrial weight in Kilograms but body weight in stones and pounds!

Anyway, I digress! Love the SMA connector on the end of the boom! Would be a good yagi for indoor use!!

73

Matt G8XYJ


#4

Hi Mat,

I am pleased to see that the tape measures are 100% metric!
Why in this country we have not fully changed, I will never know?

Know the feeling, “1 meter, 800 and an 1/8”. Got to love it

Look forward to giving this a try

PHIL VK2JDL


#5

And I wonder if wood in Europe is still sold in some odd dimentions that when converted from cm to inches tuen out to be 2 x 4 s !! I think plumbing pipes are the same.

73 Ed.


#6

Hi Ed,

4x2 was nominally that at the time of saw milling the green timber. Shrinkage in drying reduced them. With metrication, guess what happened. We got 90 x 45. Ah you might say, that’s for planed timber. true but funnily enough it also applies to rough sawn now too.

Those mixed measures are what we colonials regard as a direct consequence of delightful British eccentricity.

73
Ron VK3AFW


#7

This is my ultra portable Yagi:

It is supported by a camera tripod.

73,

Andrew


#8

Nice, like my 2m Fox-hunting Anenna.
73 es gl