[Harc] SWR VS Resonance

[Daniel Eaton]

Hi Howard:
Check this out and let me know what you think. Do you have a VSWR meter
placement issue?

This is a restatement of your paragraph 2.
https://forums.qrz.com/index.php?threads/placement-of-swr-power-output-meter.608247/


73,
Dan KB6DE


On Wed, Feb 3, 2021 at 11:31 AM Howard, KB6NN via Harc <
harc at humboldt-arc.org> wrote:

> I have been trying to put into words why a dipole, resonant on a frequency
> we want to operate on may not show a 1:1 SWR.  From experience I know that
> such an antenna does not always show a low SWR, and that the placement of
> the antenna is important (height above ground, nearby objects, etc.) in
> determining the SWR of an otherwise resonant antenna.
>
> Also important is the method of feeding the antenna and connecting it to
> the radio.  I also have been saying that SWR, when measured at the
> transceiver, is an indication of the match between the radio and the
> antenna system, not [just] the antenna itself - the antenna system includes
> anything from the antenna jack on the back of the radio all the way up to
> and including the antenna itself.
>
> Another thing I say is that the matchboxes commonly called "antenna
> tuners" are matchboxes, not antenna tuners.  They are impedance matching
> devices.  If the radio wants a 50 ohm load, the matchbox makes sure that,
> whatever the actual impedance of the load (antenna system), a match to 50
> ohms is obtained.
>
> I found an article that says it better than I can, and has examples:
> https://hamradioschool.com/good-swr-and-antenna-resonance/
>
> Thanks for reading,
> Howard
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> KB6NN
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