Survivalism & Self Sufficiency Topics > Amateur Radio How-To's

The G5RV ,all band 80 through 10 meter antenna

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Carl:
The G5RV antenna is one of the most popular  multi-band antennas in the world.It has good overall performance
on most hf ham bands when used with an external tuner, and allows coax as feedline to the radio equipment.
Note that some internal tuners just don't have enough range to "tune" it.

It was invented in 1946 by Louis Varney, whose call sign is G5RV

The basic G5RV antenna measures only 102 feet across the top for 80 thru 10 meter operation, and is fed at the center through a low loss 34 feet feed-stub. The interaction between the radiating section and the feed-stub makes the G5RV
usually easy to match on all-bands from 80 through 10 meters with an antenna tuner.

The antenna does not need to be put up as a flat-top (horizontal fashion), but can be installed as an inverted-V.
If the antenna is raised as an inverted-V, the included angle at the apex should not be less than 120 degrees.
The ladder Line should not touch metal objects or earth and all connections should be weather sealed. A PVC pipe as a stabilizing retainer or stand off is suggested ,or other insulating material can be used.

The G5RV is capable of multi band service BUT it was originally designed as a 20 meter high performance antenna.



Freedom Forged:
Thanks Carl for this information.  The G5RV doesn't look like it comes with a balun as far as I see.  So you recommend adding one?
David

Carl:

--- Quote from: Freedom Forged on February 10, 2015, 02:22:46 PM ---Thanks Carl for this information.  The G5RV doesn't look like it comes with a balun as far as I see.  So you recommend adding one?
David

--- End quote ---

A balun helps keep stray RF out of the Ham station...though with a good tuner ,is not needed for the antenna to work.
A 4 to 1 balun aides the tuner in matching some of the tougher bands.

Freedom Forged:
Carl, I hope this makes sense.

The power company is setting a pole for a security light in my backyard.  The pole will be located in the corner of my property.  If I use this pole for the center point of this antenna can I run one leg parallel with the back property line and the other leg parallel with the side property line in an inverted V with the end of each leg about 10 ft above ground level.   ????
David

Carl:

--- Quote from: Freedom Forged on February 13, 2015, 07:42:27 AM ---Carl, I hope this makes sense.

The power company is setting a pole for a security light in my backyard.  The pole will be located in the corner of my property.  If I use this pole for the center point of this antenna can I run one leg parallel with the back property line and the other leg parallel with the side property line in an inverted V with the end of each leg about 10 ft above ground level.   ????
David

--- End quote ---

A sloping "V" is within the collection of good antennas ,though you will not notice about 2 DB gain towards the open side of the sloping "V" it does happen , my 40 meter is actually a sloping "V" in that manner. It will work ,but I am most apprehensive that the power company does not normally allow 'attachments' to their poles in my area and many security ,on at dark' lights generate a good bit of noise PLUS the power company line parallel to your antenna may also induce some noise...

I'd say it looks like a good plan but may have some noise,especially when that light is on,and may get other "NOISE" when power company finds you using their pole. Just be aware of downside possibilities and give it a try.

http://www.antenna.it/military/images%20military/hf.military.antenna.sloping.v.vr23f.pdf

Yours may look like this with a more open angle (90 degrees VS 40 degrees for the more directional military version )as does mine (due to my narrow property.)

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