[TowerTalk] Testing chokes with 31 material

[Steve Hunt]

I'm surprised there was so much difference with the AIM results; I've 
made the same comparison myself and not seen anything like that sort of 
difference.

I wonder how you calibrated the AIM4170 before taking the measurements ?

Steve G3TXQ



On 29/08/2011 23:02, Tod wrote:
> RonL
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> A follow up to my earlier response with respect to measuring the chokes
> using an AMI 4170.
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> This afternoon I measured two chokes with the AIM 4170 and ploted the
> results on the two cores, 4 turns and two cores, 5 turns graphs to show the
> results compared with the measurements I made using the Vector Voltmeter and
> voltage divider circuit.
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> I added the new graphs to the document [at the very end] and have uploaded
> it to the web site. You can see from the graphs that, when I measure the
> chokes I have fabricated, the impedance magnitude results are lower when
> using the AIM 4170.
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> 73, Tod, K0TO
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