Towertalk
[Top] [All Lists]

Re: [TowerTalk] Baluns for RX antennas

To: towertalk@contesting.com
Subject: Re: [TowerTalk] Baluns for RX antennas
From: Craig Smith <craig@powersmith.net>
Date: Mon, 23 Apr 2012 09:15:38 -0600
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
I'm using an AIM 4170.  Accuracy not the best at high impedances.  As a 
rule-of-thumb, I'm comfortable with it to give meaningful measurements up to 
about 2 Kohms and useful relative results up to 5 Kohms.

73  Craig  AC0DS


> The SRF of these chokes is about 2.4 MHz, so they will operate below 
> resonance on 160 and the BCB and above resonance elsewhere.  I measured>  7.5 
> Kohms impedance at resonance, but it is probably higher due to my measurement 
> limitations.  The impedance vs. freq is roughly as follows:
> 
> 500 KHz       1.4 K ohms
> 1 MHz 3.5 K
> 5 MHz 4 K
> 10 MHz        2 K
> 20 MHz        1 K
> 30 MHz        0.6 K
> 


out of curiosity.. what was your measurement setup?





_______________________________________________



_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk

<Prev in Thread] Current Thread [Next in Thread>