[Antennas] WTB: butterfly capacitor

Dave Henderson [email protected]
Tue, 19 Mar 2002 14:35:37 +0000


At 08:07 AM 3/19/02 -0600, James Duffer wrote:
>Could a length of coaxial cable be used?  Like it is rated so many units 
>of capacitance per foot.....don't know what the desired capacitance 
>is...so don't know if the length of coaxial is practical.
>Someting you might want to look into.
>
>73 Jim wd4air

Yes
Coax will work if the power levels involved are not too high.

Also the "coax caps" also have higher loss than the air variables, possibly 
a real consideration since in order to work with even some efficiency the Q 
of the circuit needs to be as high as possible.

Dave
NR1DX