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1-3 of 3 messages
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restricted antenna at home
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by DAVIDVD59 on October 11, 2008
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Well guys I have a 40 meter dipole on my roof, and I do mean ON MY ROOF! It does make some contacts out several thousand miles on 40 meters. My noise level is a typical s7 when tuned. I also have a 102 inch whip on the back of the house with the base mounted at 15 feet, so 23 feet high approx. Sometimes the 102 inch whip picks up signals better than the dipole(40,20 meters), and a lower signal to noise reading. If I replace the 102 inch whip with a hamstick, I also sometimes have better reception on the hamstick (signal to noise)than the dipole on the roof, BUT being that the hamstick is tuned for the band the noise level is back up to s7, s8 on the hamstick. Using a tuner for receive on the 102 inch whip also brings the noise level back up to s5 or s6. Now the question, regardless of noise level situation, which will work best as a mini vertical a 102 inch whip with an sgc tuner at the whip, or a sidekick antenna? I would like the option to transmit off the vertical. Near ground mounted Flag poles worry me when it comes to children and pets being near it, or am I being overly cautious? So give me your ideas. I can have ONE skinny little vertical antenna. If you think I should scrap the mini-vertical, how high would I have to have a flag pole up in height to make it work, I already own an aluminum one. The issue I am looking at is the small verticals are already 15 feet off the ground at the base, and that first 15 feet of flag pole is wasted, near the ground compared to the other mini vertical antennas, yes or no? If I can even get close to a mobile signal on the vertical I would be happy.
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RE: restricted antenna at home
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by KJ4ERY on October 12, 2008
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You might get more replies if you post in the Elmers Forum. The Antenna Restrictions Forum has to do with restrictive covenants imposed by HOA's or CC&R's.
Jim K4CAV
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RE: restricted antenna at home
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by N5LRZ on October 29, 2008
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IF the antenna itself can be touched when you transmit then you might want to take care not to transmit when your children might touch if or dog decides to take a wiz wiz on it while you transmit (ouch for the dog).
However a vertical as you are contemplating is not your only external option.
Here is what I want you to do. Get one of those grid pads and go outside. Diagram your entire lot in some kind of sensible proportion on your grid pad making note of everything--fences and type of said fence, height of fences, trees heitht of trees, home, height of roof and or chimneys, and even storage sheds where size and height, trees definately including height there of and of course any ornamental schrubs around the lot or house as well. Note the construction of the buildings roof etc. Write down everything you see for consultation. Even note where you mow the lawn and where you do not mow the lawn.
NOW using this information THINK OUTSIDE THE BOX aka wierd aka creative. This is Rule 1. Rule 2, get used to the fact you will have to use a tuner almost all the time with any kind of compromise antenna, particularly end fed and or random length wires.
Now look at your sketch and think along the lines of WHAT IF....
For example: WHAT IF I run some small almost invisible magnet wire around the top of the wooden fence in the back yard for an antenna. Example: WHAT IF I use some green plastic coated wire and make a wire ground plane that I can hide in that tree in the back yard so as to make the wire look like a green vine. Example: WHAT IF I take that metal paint pole (that metal extension pole used by painters to paint high places while standing on the ground) in the shed, attach the sections togetner electricly an adjust its length and lean it against the wooden tool shed--and load it like a ground mounted vertical.
Ecample: Consider your driveway and auto as well--a mobile antenna mounted on your vehicle with the vehicle pointed in a given direction for a little directivity--run some small diameter coax to the car ;)
EVEN CONSIDER the ground itself. Yes even the ground. Example: WHAT IF I JUST lay the wire on the ground around the base of that big wooden fence in the back yard (green insulated wire of course) and let the grass grow over it.
Bottom line, consider nothing out of the question and experiment experiment experiment.
Here is what you want to do. You want a conceiled antenna so well hidden that if a stranger were to come to a BBQ party in your back yard they would never see your antenna or even know you had one.
IF you can do this with what you have availabe for conceilment and support then you are going to be able to operate with a more secure feeling. And probably a lot better signal than a dipole in the attic.
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