[Elecraft] Loading inductor Question

[Jim Wiley]

Ken -

 A toroidal inductor should work fine,   it is understood that the core 
must be of the proper material and size to handle the expected power and 
frequency range.  Keep in mind that many of the automatic tuners use 
toroidal inductors  in their design.   There is some advantage to having 
the loading inductor "out in the air", as it dos radiate somewhat, but 
the convenience and practicality of an actual design may dictate that 
the inductor (s) be enclosed.   


Being a conservative sort, I would tend to use bigger cores and larger 
wire sizes that an absolute engineering solution might dictate, mostly 
for safety factor and insurance against core  saturation  when  handling 
unusual situations. 



- Jim, KL7CC


Ken Alexander wrote:
> Folks,
>
> Given that inductors on toroid cores are used extensively in autotuners, is there any reason (assuming I choose the right size core, made of the correct material for the application and winding it with the right size wire) for not using one as a base loading inductor on a vertical antenna?  I'm talking 100 watts maximum transmitter output here.
>
> Any down side to doing this?
>
> Thanks and 73,
>
> Ken Alexander
> VE3HLS
> _