Hi Brian,
I'll not pass through the theory but I can give you a good reference from
Agilent:
"Agilent impedance measurement handbook"
http://cp.literature.agilent.com/litweb/pdf/5950-3000.pdf
I use the I-V method (not RF I-V) with an 10MHz oscilloscope and a T80-2 with
20 turns on it as a current transformer. With this simple set-up I got the I, U
and phase difference between theme.
As a RF source, I use the transceiver with less than 10W.
73 de YO3FFF
Cristi
----- Original Message ----
From: Brian Miller <brianmiller@xtra.co.nz>
To: cris blak <cyo3fff@yahoo.com>; topband@contesting.com
Sent: Fri, February 5, 2010 11:14:50 AM
Subject: Re: Topband: Interesting Observation
Hi Cris
Can you please explain how you go about measuring resonance and impedance with
the I-V method?
Thanks
Brian ZL1AZE
----- Original Message ----- From: "cris blak" <cyo3fff@yahoo.com>
To: "Edward Swynar" <gswynar@durham.net>; <topband@contesting.com>
Sent: Thursday, February 04, 2010 11:45 PM
Subject: Re: Topband: Interesting Observation
> Hi Ed,
>
> I use an INV-L with 36 short suspended radials. I check the resonance and its
> impedance using I-V method with current transformer and an oscilloscope.
_______________________________________________
UR RST IS ... ... ..9 QSB QSB - hw? BK
|