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Why Antenna Tuners Aren't Necessarily Useful for Shortwave Listening - Question Shortwave Listening (SWL) Antenna Tuners - Do You Have An Opinion ?
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March 12th 06, 10:36 PM posted to rec.radio.shortwave
Telamon
Posts: n/a
The Next Step - The Low Noise Inverted "L" {Random Wire} Antenna - Question Shortwave Listening (SWL) Antenna Tuners - Do You Have An Opinion ?
In article ,
wrote:
On Sun, 12 Mar 2006 15:33:26 GMT, David wrote:
On Sun, 12 Mar 2006 14:26:15 GMT, Bob Miller
wrote:
On 11 Mar 2006 23:12:08 -0800, "RHF"
wrote:
A random length dipole will work as well as any random length "wire."
With or without an antenna tuner. And be easier to feed.
Bob
k5qwg
''Random length dipole'' makes little sense.
aka 'Doublet' where you have two equal lengths of wire that are not
cut to any specific frequency, rather they are cut to fit the maximum
dimension you have available. Doublets are typically fed with
twinlead and a tuner is used.
The concept here is that on receive size matters so a dipole antenna
made for the lowest frequency band you want to receive will be a
multiple wavelength antenna on higher frequencies. The only rub here is
that it will not work well on even harmonics so be sure to pick a size
that ends up as an odd electrical harmonic length on the higher bands.
--
Telamon
Ventura, California
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