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Tunable filter module in the VHF band

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elf61

elf61

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

Re: tunable filter [hlp]

elf61 said:
hi
i want to use a tunable filter in the vhf band. i prefer to use implemented modules. is there any modules?
Click to expand...

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:
**broken link removed**


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 ?
 

    elf61

    elf61

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Re: tunable filter [hlp]

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.
 

    elf61

    elf61

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