On Thu, 2012-08-16 at 14:17 -0400, William Bross wrote:
> Herbert Graf wrote:
>=20
> >Hello again,=20
> >
> >was wondering if anybody could point me at these two components:
> >
> >F4.5E
> >T4.5C
> >
> >I believe the first is a 4.5MHz bandpass filter the other a notch
> >filter.
> >
> >I've attached images if that helps.
> >
> >Thanks! TTYL
> > =20
> >
> Herbert,
> Here's some links for some general ceramic filter information:
>=20
> http://www.token.com.tw/filter/index.html
>=20
> http://www.murata.com/products/catalog/pdf/p11e.pdf     (has a writeup=20
> on ceramic discriminators)
>=20
> http://www.q-crystal.com/product/product_16.html

Hello William,

thanks, but those were the sorts of links I was finding. While
informative, they are often contradictory. I was hoping someone here
would have more specific experience with this part of the industry.

> Do you by any chance have a sweep generator and scope handy that can=20
> handle this frequency?  It's relatively simple to get the general =20
> bandwidth of operation and filter type.

I could put something together, however it'd mean I'd have to extract a
part, test it to see how it reacts, and then go to the next part. It
would be much easier if I could get info on these sorts of parts so I
could just plunk the right part off one of the boards I've got.

Thanks, TTYL

--=20
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