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Old October 2nd 15, 05:05 PM posted to rec.radio.amateur.antenna
Stephen Thomas Cole[_3_] Stephen Thomas Cole[_3_] is offline
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First recorded activity by RadioBanter: Jan 2014
Posts: 329
Default Short antennae are poor radiators - a simple illustration.

Bernie wrote:
On Fri, 02 Oct 2015 16:41:50 +0100, gareth wrote:

wrote in message
...
On Wednesday, September 16, 2015 at 7:59:00 AM UTC-5, gareth wrote:
By their very nature, short antennae are standing wave antennae and
not travelling wave antennae.
Consider the standing wave that is apparent when the incident wave
arrives at the open end of the antennae.
In the case of at least 1/4 wave antennae, the standing wave exhibits
the full quadrant of a cycle, but in the shorter antennae, there is
less than a full quadrant,
and it follows that because not the full quadrant appears on the
antennae, then they do not radiate from that full quadrant.
Your car wears it's tire mittens, yet sputters at porch lights due to
excessive carbon buildup on the various intake valves.
The carbon expands as it heats up, and then the valves refuse to seal,
which leads to a loss of compression, which leads to a poor operating
ability as it passes go to collect it's $200 while operating 3A at
field day.
I asked my cat what is likely the cause for this peculiar phenomenon,
and it laughed at me and pointed to the northeast.


Sorry, looks like random garbage to me.


The irony is *very* strong with this one.


He best keep away from magnets then.

--
STC // M0TEY // twitter.com/ukradioamateur