Re: fFINAL REPORT Cu COIL vs Al COIL (fwd)

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---------- Forwarded message ----------
Date: Wed, 10 Oct 2007 07:41:26 -0700
From: Ed Phillips <evp@xxxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: fFINAL REPORT Cu COIL vs Al COIL (fwd)

                          Cu

>>>> _______________             ______________     
>>>> f        Q      C        Leff     Q      C       Leff    Q
>>>> (Cu/Al)
>>>> 5000    565    103.5     9.78    655    102.2    9.91    1.16
>>>> 4500    547    129       9.69    625    129      9.70    1.14
>>>> 4000    515    164       9.65    600    163      9.71    1.17
>>>> 3500    505    214       9.66    565    211      9.80    1.12
>>>> 3000    479    293.5     9.59    535    291.5    9.66    1.12
>>>> 2500    438    428       9.47    495    423.5    9.57    1.13
>>>> 2400    425    463       9.50    490    460      9.56    1.16
>>>> 0      0                                0
>>>>
>>>> Frequencies in kHz, capacitance in uufd         
>>    
>>
 I take it that the first table column is Frequency?
 50 MHhz thru 24 MHz?

 Or am i rong?
 best
  dwp"

	You're correct about the column being frequency but misinterpreted the frequency.  5000 kHz is only 5 MHz so range is from 5 MHz to 2.4 MHz.  The lower frequency limit was set by the maximum size of the variable capacitor in the Q meter.  While it's possible to add external capacitors to extend the frequency range I didn't have any of low enough loss to make the measurement meaningful.

Ed