[Lowfer] 15 kHz bandpass filter - what's it for?

Wed, 11 Feb 2004 13:04:07 -0000

The HP3586 Selective Level Meter uses a 2nd IF of 15.625kHz and achieves
it's selectivity by the use of xtal and LC filters at that frequency.

Tracey

----- Original Message ----- 
From: "Don" <[email protected]>
To: <[email protected]>
Sent: Wednesday, February 11, 2004 10:10 AM
Subject: [Lowfer] 15 kHz bandpass filter - what's it for?

> Hello group,
> I recently acquired a pair of passive LC filters that are sharp bandpass
> at 15 kHz.  At least that is what they demonstrate when hand swept with
> signal generator and scope.  These units are half the size of a brick
> and are full of 1 percent tolerance components.  Any thoughts as to what
> I might do to put them to productive use?   Would it be practical to
> make a selective receiver with 15 kHz IF in order to use these units?
> I know 50.5 kHz has been used as an IF and utilized LC filtering to
> achieve selectivity.
>
> I am betting that someone here will be able to answer my question.
>
> Thank You,
> Don    WN9V
>
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