Tunable filter module in the VHF band

hi
i want to use a tunable filter in the vhf band. i prefer to use implemented modules. is there any modules?

I'm trying to design such a filter from a quite long time. I didn't found yet any module which could be digitally controled and usable on the whole VHF band.

I forgot about these if you consider them ok as price:
http://www.polezero.com/category/3.aspx


However a fixed band filter (active or passive) could be very easy implemented in this frequency range. If the frequency is not very critical, maybe works a varactor controlled filter ?

Cavity filters are quite simple to do and works fine in VHF.
In the net are a lot designs.
I have an old folder with a design but I can′t find.
As soon as I find it I′ll upload.
I did one for 144 Mhz is was big but works fine.