On Jan 20, 5:32*pm, "amdx" wrote:
* I recall an article in QST or "73", I think the title was,
* "For the L of it"
* I'm looking for the magazine it was in and the date it was printed.
*The article described *a series LC, a fixed L and a air variable C.
The impedance of *the L was bigger than the impedance of the C,
and by adjusting the C you caused the inductance to vary.
So in effect you have a variable inductor.
* * * * * * Thanks, * *Mikek

Or two caps in series connected paralell to an inductor. Input or
output at the juction of the caps. This concept of the circuit may be
more easily found in various reference manuals. You may find these
caps labeled TUNE and LOAD in some circuits.


Jimmie

Jimmie