Dave, Frank;
Wow! Thank you for the detailed suggestions.
Question: How would tuned stubs accommodate multiple bands? 40m (1/2 wave nom 66ft)/20m (nom full wave), maybe even 15m (nom 3/4 wave)?
Also, what if the dipole is not perfectly balanced (probably far from it?) and Z0 is not purely resistive?
Where can I read up on the theory behind using tuned impedance matching stubs?
I think I may need to move a cot into the attic. It seems I will be spending some time up there! ?
Best,
Bill WA2WIO
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-----Original Message-----
From:
[email protected] [mailto:
[email protected]] On Behalf Of DP via groups.io
Sent: Monday, November 11, 2024 2:25 PM
To:
[email protected]Subject: Re: [nanovna-users] Dipole antenna with Low Z0 feed point Impedance
Hi Frank,
I'm a huge fan of yours, and very grateful for your countless contributions that continue to elevate the hobby. Many many thanks! Yes, I counted your suggestion of two 1/4-wave sections of 75-ohm coax in parallel as one of the best. Regarding effective bandwidth, that method will also be dominated by that of the antenna.
Best 73s,
Dave NU8A
On Mon, Nov 11, 2024 at 01:26 PM, Frank Donovan wrote:
Dave forgot to model what is likely to be the broadest bandwidth solution
using coaxial cable: Two 90 degree lengths of 75 ohm coax in parallel
73
Frank
W3LPL
