[Elecraft] Matching resonant antennas

[donovanf at starpower.net]

Ken's statement that " a non-resonant antenna can have a 1:1 SWR" 
is patently false with the sole exception of a dummy load used as an 
antenna. 


73 
Frank 
W3LPL 


----- Original Message -----

From: "Ken WA8JXM" <wa8jxm at gmail.com> 
To: "Andy Durbin" <a.durbin at msn.com> 
Cc: elecraft at mailman.qth.net 
Sent: Wednesday, July 15, 2020 7:30:58 PM 
Subject: Re: [Elecraft] Matching resonant antennas 

Yes, a resonant half wave dipole can have a feedpoint impedance of 5 ohms 
to 90 ohms (SWR 10:1 to 1.8:1), but it's still resonant. 

Conversely, a non-resonant antenna can have a 1:1 SWR. 

Ken WA8JXM 

On Wed, Jul 15, 2020 at 12:34 PM Andy Durbin <a.durbin at msn.com> wrote: 

> "A correspondent asked me why I needed to tune a resonant antenna." 
> 
> Perhaps the question should have been "why may you need to match the 
> impedance of a resonant antenna". The answer may be that not all resonant 
> antennas are 50 ohm. Resonance only means that inductive and capacitive 
> reactance are equal magnitude. Resonance says nothing about the value of R. 
> 
> Andy, k3wyc 
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