Thread: 20m "ringo"
View Single Post
  #22   Report Post  
Old September 14th 06, 02:36 AM posted to rec.radio.amateur.antenna
Owen Duffy Owen Duffy is offline
external usenet poster
 
First recorded activity by RadioBanter: Jul 2006
Posts: 168
Default 20m "ringo"

On Wed, 13 Sep 2006 20:30:14 -0400, "Jimmie D"
wrote:


With knowledge, you should be able do this easy enough without an
antenna analyser.

....
I am thinking about building an ANTENNASCOPE, see fig 1 at
http://digilander.libero.it/hamweb/r...tennascope.htm
. This one doesnt allow you to measure impedance but i thought if I replaced
one of the capacitors in the bridge circuit with a variable cap of about
twice the value I could at least tell if an antenna was inductive or
capacitive by which way I had to adjust the cap to get a perfect null. I
think I have most if not all of the parts.


It looks like you are going to develop an instrument to solve the
problem, when you should be able to solve it with a little ingenuity
and the VSWR meter that you have.

Owen
--