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LF: coil formers

To: [email protected]
Subject: LF: coil formers
From: "hamilton mal" <[email protected]>
Date: Sun, 6 Oct 2002 11:18:45 +0100
Reply-to: [email protected]
Sender: <[email protected]>
Hi All
Some stores have a variety of buckets/baskets varying in diameter from a few inches to 15 inches and depth up to 15 inches or more. These devices are sturdy and slotted or at least 50% cut out making good semi air spaced coil formers for LF, much more efficient than any solid plastic type former. These baskets can also be stacked and used in series for those that need more inductance.
The smaller ones fit inside the larger ones and make good variometers.
I got mine from the £ stretcher shop for 90 pence each !!!! There are various colours but I use white when possible and so far no melt down or signs of distortion due to high RF voltages.
They make a tidy job, look good.
For insulators that will withstand high RF voltages and only cost a few pence use crab/lobster pot spinners, these are white plastic material, figure of 8 construction and strong about 4 inches long and 1-1/2 inches wide. These are available from ships chandlers at fishing ports and cost about 50 pence each, also in the same shops there are a variety of marine plastic ropes any diameter and up to 200 metres in length, ideal for antenna support work.
 
Antenna wire is available from electrical shops on industrial estates at reasonable prices usually in 100 - 200 metre rolls.  I use insulated wire, various colours and usually 2.5 mm stranded although 1.5 mm up to 10 mm is usually available. This wire also makes good  insulated ground radials
 
Everything that a LF experimenter needs is readily available and at the right price!!!
 
When you get tired of LF you will have enough wire to go into the electrical wiring business, enough lobster pot spinners and baskets to go fishing and enough rope to hang everyone that took a dislike to you while LFing.
 
73 de Mal/G3KEV
 
 
Have fun de Mal/G3KEV
 
 
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