Topband: Impedance of inv l?

Edward Sawyer sawyered at
Mon Nov 19 10:08:18 EST 2018

I am not sure where you are getting your information that cutting the losses
in your 160 vertical from 60 - 37 Ohms will have no difference in
performance - technically or noticeably but its not correct.


Reducing ground losses is THE ISSUE on 160M.  Calling a 1.2:1 SWR great and
not realizing what is being traded to get there, it really lacking of the
right solution.


A 160M antenna should have the lowest possible losses for the site and then
the resulting SWR matched or tolerated.  Not the other way around.




Ed  N1UR



"Date: Sun, 18 Nov 2018 11:41:12 -0500


To: <k1fz at>, <ww3s at>,         "Topband"

                <topband at>

Subject: Re: Topband: Impedance of inv l?

Message-ID: <F43BD6F1A0AD4625907582ABB92BBD54 at jayPC>

Content-Type: text/plain;            charset="UTF-8"


Theoretical impedance for a perfect 1/4 wave ground plane is 37 ohms. 60 

ohms is great; 1.2:1 VSWR ? leave it alone, you will never notice any 

difference if you try to improve it. It will change with rain, snow, etc 

anyhow..73 Jay ny2ny"


More information about the Topband mailing list