[Milsurplus] LCR Meter With Useful "L" Ranges?

[Greg Mijal]

I know of one machine that can measure under 1 uh.  You will find them on 
Ebay and at the flea-tussles.  It's called a Tektronix type 130 LC meter. 
They have six ranges: 0 - 3 uh, 0-30 uh and 0-300 uh.  Also capacitance in 
three bands to 300 pf.  It uses tubes and each band may be calibrated easily 
with a standard inductor or capacitor.  I've had one here for years and get 
very good results with it.  The last inductor I checked with it read .6 uh 
and was found to be correct.  Flea market price is around $25 more on Ebay. 
Matching calibrator box cost a bit more and really isn't necessary.  A box 
of standard value caps and coils is.  No reisitance measurements available 
in the 130.  Beware of inexpensive Chinese meters they have zero acurracy in 
the UH or PF range but are OK for reading .1 uf and above.
73's
Greg
WA7LYO
Kinston NC
----- Original Message ----- 
From: <mstangelo at comcast.net>
To: "David Stinson" <arc5 at ix.netcom.com>
Cc: <boatanchors at mailman.qth.net>; <boatanchors at theporch.com>; 
<milsurplus at mailman.qth.net>
Sent: Tuesday, March 08, 2011 9:16 AM
Subject: Re: [Milsurplus] LCR Meter With Useful "L" Ranges?


> David,
>
> Most LCR meters measure in the audio range. You want a meter that measures 
> at the frequency of interest.
>
> I recommend an Vector Network Analyzer:
>
> http://n2pk.com/
>
> http://www.sdr-kits.net/VNWA/VNWA_Description.html
>
> or
>
> http://www.w5big.com/
>
> I built the N2PKVNA and bought a VNWA. They're great tools for accurate RF 
> measuirements.
>
> 73,
>
> Mike N2MS
>
>
>
> ----- Original Message -----
> From: David Stinson <arc5 at ix.netcom.com>
> To: milsurplus at mailman.qth.net, boatanchors at mailman.qth.net, 
> boatanchors at theporch.com
> Sent: Tue, 08 Mar 2011 02:22:36 -0000 (UTC)
> Subject: [Milsurplus] LCR Meter With Useful "L" Ranges?
>
> Is there an affordable LCR meter that will accurately read
> the value of inductors of less than one microHenry?
> Some of these "L" meters are a bad joke, with a low
> range that starts at 2 milliHenrys, which is useless for RF work.
> Yes, I know I could grid-dip and calculate, but that's not precise
> and besides- I'm lazy.
> Thanks!
>
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