he does not want it ... but it is ;-)
fed with a balanced tuner it should work any band from 160 to 10
maybe the ladderline length needs some tuning if you are at a very high or low impedance spot on a higher band but in principle a doublet (or biiiiig loop) is the best multibander you can have ... just needs a good tuner
dg9bfc sigi
ps i am using a 168m loop ... also fed via ladderline
Am 23.08.2022 um 20:15 schrieb Fred Moore:
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Good afternoon Dave.
Just out of curiosity, why would you want a 450 ft doublet resonant at 950
kHz?
Fred - N4CLA
On Tue, Aug 23, 2022 at 2:01 PM W0LEV <davearea51a@...> wrote:
A dipole, by definition, is resonant: +jX = -jX = 0.
A doublet is a dipole, but not resonant where you require.
My 450-foot doublet exhibits its first 1/2-wavelength resonance at roughly
950 kHz, but does not show resonance in any of the HF ham bands.
Yes, measurements need to be made to reduce / minimize unwanted
reflections. That's the devil in the details.
Dave - W?LEV
On Tue, Aug 23, 2022 at 5:54 PM Roger Need via groups.io <sailtamarack=
[email protected]> wrote:
On Tue, Aug 23, 2022 at 10:13 AM, W0LEV wrote:
A dipole works fine for the reference antenna. Nominally 2.2_ dB gain
over
isotropic.
That is the gain of a dipole antenna in free space at resonance. Over
ground the gain is higher. How much higher depends on height and ground
characteristics.
Roger
--
*Dave - W?LEV*
*Just Let Darwin Work*
--
Dave - W?LEV
