[Antennas] Slinky Antennas

Sun, 21 Apr 2002 03:57:31 -0500

Jim,

You can get the original steel slinky at WalMart for less than a dollar.
Two of them will resonate from about 40 meters up. If you put two on
each side then down to 80 meters (they solder easily together). I have
built quite a few and use them for portable use and I don't see why they
would not work in your attic if you have the room. I don't have any
figures but I am sure they probably do not perform as well as a dipole
up high but one would let you have some fun. Anyway they are very cheap
to make so if you don't like it take it down and make some kids happy. I
have had one in my bedroom for several years for a second rig so I can
monitor dx. It is only about 6.5 feet from the ground and not a good
performer but throw a line over a limb of a tree and haul it up 30 feet
and have fun on vacation. I can give you building and adjustment
instructions if you want.

73,

Jim, N5QL 

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of [email protected]
Sent: Sunday, April 21, 2002 1:10 AM
To: [email protected]
Subject: [Antennas] Slinky Antennas

Has anyone had any experience with these types of antenna?  They are
seen
on EBay regularly.  They look pretty simple, two metal slinkys joined in
the middle by a support with an SO-239 connector.  Claims to be equal to
160' dipole.

I have two questions.  1) How well will thin spring steel radiate?  2) 
Is there some type of finish or coating on these things which night
inhibit proper radiation.

I am looking for a decent attic ant for 100 watts and, of course, a
tuner.  Most likely 10 - 80 Meters.

All comments appreciated.

Jim
KB3BMT

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