Re: LF: Can I match 2 frequencies with one loading coil?

[DK7FC <selberdenken@posteo.de>]

Hi Chris,

It will depend on your antenna size and the system Q. Just try and see 
what happens. On RX, mnothing should become damaged. With the coil 
switched to LF there could be enough signal on MF. As long as e.g. a 
ferrite transformer in the line is can handle LF, it will also handle 
MF. Just about a factor 3 in frequency. But you could use further 
components in the shack to get more signal on MF then, like a parallel L 
which pulls the residual resonance towards higher frequencies.
Just some spontaneous thoughts.

73, Stefan


Am 28.06.2018 17:18, schrieb Chris Wilson:
> Hello  LF'ers and MF'ers
>
> Can I, for RX only, use my single loading coil to match 2 receivers to
> my single (LF at the moment) antenna , one on MF and one on LF? I
> envisage 2 feedlines to the shack. How important is a 50 Ohm match on
> the MF one? If I need a second matching transformer for MF what
> toroidal core should I use? Thanks.  2E0ILY
>
>
>
>