June 26th 10, 03:04 PM
posted to rec.radio.shortwave
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First recorded activity by RadioBanter: Jan 2009
Posts: 5,185
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Matching transformer comparison?
m II wrote:
Anyone have a way of measuring the varying efficiencies of the
following? Let's say 5 to 20 MHz frequency range.
This would be the base number for comparison, assign it a one:
a: Straight connection of a random long wire antenna
The others...
b: The same long wire connected through a television (75/300 ohm variety)
c: Same antenna with a 9:1 ratio transformer
I'm assuming everything else remaining the same. I'm interested in the
variation, shown ratio wise, between the above. Are there any handy
online calculators for this?
mike
http://amateur-radio-wiki.net/index....le=Calculators
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