Not the washing line!

Discussion about Receiving Antenna (design, construction, use, and so forth).

Not the washing line!

Postby gelo » Thu Mar 16, 2006 12:41 pm

i found an amazing use for ya old washing line. i got a three rod washing line outside my bedroom window and i wound the wire to the orignal route of the washing line. The triangulated formation is good and gave impressive results for both SW and Scanner frequencies. The audio was crisp and i could recive good wefax pictures through it.

Just thought you might like a cheap alternative to buying an expensive aerial. And oh yeah the cable i used is looped and it is a double core wire.
gelo
 

Postby WX9T » Thu Mar 16, 2006 2:35 pm

Actually, something like that would potentially make a very small 'flat-top', like those used in early broadcasting. If you center-fed the triple wires equally, you'd get a design approximating that. However, I doubt the height or length would be advantageous if you only used the typical supports for a clothesline. You'd need something perhaps 20-30' in height at minimum, and 50-60' length on either side of the center feedpoint insulators.

http://home.bellsouth.net/p/s/community.dll?ep=87&subpageid=116066&ck= shows a plan for a two-wire flat-top with an end-feed arrangement. This is perhaps the simplest arrangement for a flat-top, aside of a single-wire Marconi 'T'. It's a potentially very effective antenna on lower bands, especially with the vertical feed/element component being able to work on low-angle reception.
WX9T
 


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