[RFI] Complex Impedance Measurement Instruments

[Richard (Rick) Karlquist (N6RK)]

At last, a heterodyne impedance meter, which will bring
relief from AM broadcast QRM.  Now if only I can find
a laptop with a screen that is readable in daylight.
Any suggestions.  Does the TAPR design also use a laptop?

Rick N6RK

> -----Original Message-----
> From: rfi-bounces at contesting.com [mailto:rfi-bounces at contesting.com]On
> Behalf Of W0UN -- John Brosnahan
> Sent: Thursday, June 03, 2004 6:36 AM
> To: Jim Brown; RFI List
> Subject: Re: [RFI] Complex Impedance Measurement Instruments
> 
> 
> 
> >
> >For this work, I would be quite satisfied with 5-10% accuracy. 
> I'm currently
> >using what I have available -- a CIA-HF loaned by K9IKZ -- and 
> I've generated
> >some useful data, albeit limited by the CIA-HF. I know there are better
> >alternatives, but my research is unfunded, so I must make use of 
> what I can
> >borrow or buy at moderate cost. Limitations of the CIA-HF are 
> poor accuracy
> >of phase angle, 1K Ohms maximum impedance magnitude, and 54 MHz maximum
> >frequency.  Any suggestiions?
> 
> Re:  Vector Network Analyzers
> 
> You might check out      http://www.qsl.net/n2pk/
> and also look at the TAPR design that was teased
> at Dayton and will be published in the next issue of QEX.
> 
> --John   W0UN 
>