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[AMPS] MFJ-259B Question

To: <amps@contesting.com>
Subject: [AMPS] MFJ-259B Question
From: Michael Tope" <W4EF@dellroy.com (Michael Tope)
Date: Thu, 12 Oct 2000 05:56:49 -0700
Has anyone made a thorough comparison of the MFJ-259B with the AEA and Autek 
Impedance Analyzer's? The AEA seems a little sexier with the LCD graph display 
and
computer interface, but I am wondering which unit produces the most accurate 
impedance measurements?  

Thanks,

Mike, W4EF................

----- Original Message ----- 
From: <W8AV@aol.com>
To: <amps@contesting.com>
Sent: Wednesday, October 11, 2000 3:07 AM
Subject: Re: [AMPS] MFJ-259B Question


> 
> In a message dated 10/10/00 11:22:02 AM GMT Daylight Time, k7fm@teleport.com 
> writes:
> 
> << Probably the greatest accuracy is when the load is 50 ohm +j0.  As you
>  depart from that, you will see more and more error.  If the purpose is to
>  end up with 50 + j0, then it does not matter.  but, if you are measuring
>  something which is 336 +123, you may not even be close.  I have a large old
>  GR bridge for that purpose. >>
> 
> Even the $5k+  Delta OIB-1 and OIB-3 operating impedance bridges tend to pull 
> a bit when the reactances start to get really high.  I also use a GR-1606A 
> for critical impedance measurements.   The other nice thing about the MFJ is 
> that I can use it as a signal source to excite the GR bridge when making the 
> critical measurements.  But for getting in the ballpark, the MFJ works fine.
> 
> 73........de Goose W8AV 
> 
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