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IF Filter needed

IF Filter needed

IF Filter needed

(OP)
Hi all,

I need some information.

This is the filter I am currently using:
 http://www.elfa.lv/cgi-bin/index.cgi?artnr=56-956-14
 
It is a ceramic 455KHz filter. Insertion loss between 0 and 5 dB. Currently 3 dB down bandwidth of 10 KHz.

What I need is a 3 dB bandwidth of around 20 KHz. The center freq can be between 400 KHz to 500 KHz not much else is critical.

Can someone direct me were I can find a filter that might or will work.

Thanks

 

RE: IF Filter needed

(OP)
Thank you VE1BLL,

That did help.  I found a few filters I went over that might work.

It's a real pain trying to find what I am looking for.

Thank you again.

If anyone else has an idea please post.

Thanks all.

RE: IF Filter needed

Also, the telephone-book-size catalogs of the major electronic parts distributors (Newark, Digikey) typically have small sections listing various IF filters. I seem to recall browsing those sections within the past year or so. At least they might lead you to the manufacturers names.

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