[Lowfer] Still looking for a capacitance dissapation factor test

[Dave Brown]

 Bill- see below-

----- Original Message ----- 
From: "Bill Ashlock" <ashlockw@hotmail.com>

big snip--

I connect the scope to the transformer primary and adjust the
> turns in the transformer so that at resonance the voltage dips to 1/2. I
> then calculate the what the Rac load on the secondary must be by dividing
> 180 ohms by the square of the number of turns. For example, if the turns
> count is 30: 180/900 = 0.2 ohms. The combined Q is the XL of the loop (or
Xc
> of the capacitance) divided by 0.2.

How does this loaded Q figure compare to one derived from a measurement of
the -3dB points (with the same setup)?
73
Dave, ZL3FJ