On 6/6/2013 4:18 PM, Channel Jumper wrote:
Geoffrey S. Mendelson;805681 Wrote:
Take a length of 300 ohm twinlead. Short the far end, End feed one side
of
the close end, and leave the other side disconnected.

What do I have?

I know if I short both ends, I have a wide(er) bandwidth end fed random
wire.

Is it still an end fed random wire with an electrical length of twice
its
physical length?

Something completely different?

If for example, if I have 10 meters of space, and hang it, will I have
a 20 meter long random wire, which would sort of be a 40 meter band
1/2 wave end fed antenna? Or would I have an odd 10 meter long end
fed antenna (for 20m?)

Can it be switched between the two by adding a shorting switch at the
close
end? Open it would be for 40m, and closed for 20?

TIA,

Geoff.


--
Geoffrey S. Mendelson, N3OWJ/4X1GM/KBUH7245/KBUW5379
It's Spring here in Jerusalem!!!

Get yourself a ARRL antenna book


I have several different revisions of it but have never run across what
Geoffrey is asking about. Could you please point to an example in the
ARRL Antenna Book? And please give the revision.

Thanks.

tom
K0TAR