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Re: Helical primary question

Hi David,

At 04:07 PM 03/17/2000 -0600, you wrote:
snip
>spaced away on HDPE formers. The primary will not have any provision for a
>movable tap of any kind for tuning purposes. As such, it will be necessary to
>build in tune. This brings me to my question; Will I be able to measure the
>inductance of the primary coil with the secondary in proximity (1" is the
>planned clearance) or will the (open, unloaded, no ground or topload)
secondary
>couple to the primary and affect the measurement? BTW I use a Wavetek 27XT and
>don't know what the freq. it uses for L/C measurements.
>
>Any thoughts?
>
>Later
>deano
>

The meter "should" use 1kHz for the measurement which will be far below the
frequency were the unconnected secondary will make a difference.  Someimes
Mutimeters are not real good at LC measurements and not having a way to
tune is risky, so I would worry that it will work out just right.

Is there some way you can test the coil with a primary that you can tap and
then go back and "fix" it once you are sure of the tuning?

Cheers,

	Terry