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Author Topic: Updating my antennas...sort of  (Read 651 times)

Offline ve3vvf

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Updating my antennas...sort of
« on: March 19, 2018, 15:09:04 UTC »
2 years ago I moved to a place with 2 acres surrounded by farm fields.   The wind has been playing on my inverted vee antennas...especially in winter.  The tangling that occurs with the fan dipole style of antenna is disappointing extremely.  I have 2 dual band fan dipoles.  I need a better solution and I believe I may have found it.  I read an article in the ARRL Wire Antenna book that I bought from Amazon last fall.  The antenna from the article I read has the radiating elements made from ladder line/window line.  I can make a 2-band dipole that will not get tangled because the wires are evenly spaced/separated by the permanent windows.  It is still an experiment, of course, but I know they won't get all wrapped around themselves.  Here is a picture of how it is made.  Maybe someone else here has done this.  If so I'd like to know the results.  Still too cold here for antenna work but soon.

QRP - where the fun is

Offline GM0LVI

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Re: Updating my antennas...sort of
« Reply #1 on: March 20, 2018, 09:30:44 UTC »
It should work just fine - 30m and 40m are not harmonically related so interaction will be minimal. I've seen similar designs using coax as the radiators with the center core cut to the lower band and the screen on the higher band.
Dave

Offline ve3vvf

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Re: Updating my antennas...sort of
« Reply #2 on: March 20, 2018, 10:45:15 UTC »
Thanks Dave.  I'm looking forward to fewer tangles.  The current antennas are working as well as always (save for 17M) but this should tidy them up as well and reduce the number of stakes in the ground from 4 to 1 where the legs are tied off making grass cutting easier.
QRP - where the fun is

Offline GM0LVI

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Re: Updating my antennas...sort of
« Reply #3 on: March 26, 2018, 21:15:14 UTC »
A friend of mine has a big field with two phased 80m verticals in it. He lets a local farmer graze sheep on it and it saves him cuttingthe grass !!!
Dave

Offline VE2TH

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Re: Updating my antennas...sort of
« Reply #4 on: April 28, 2018, 00:47:00 UTC »
Well, now the nice weather and warmer days are back here,

I have again some antennas projects.

1- EFHW = End Fed Half Wave Antenna I shall begin with a monoband, propbly for 17 meters,  and I have the idea to have another one for 40-20-15-10 meters

2- VDA = Vertical Dipole Array  Check this one:

 http://www.f4bkv.net/antenna-vda.html
This 2 elements is sure very interesting, with a bit of gain to push my  peanut whistle signal a bit further  ;D

So some fresh air and experimentation should be a lot of fun.

Bye, Michel VE2TH
I love QRP/QRPp & CW