[Motorola] Seeking info regarding Motorola Permacode Filters

[ad7i]

I'd like to use some Motorola Permacode filters (those used in Minitor II
pagers) to make my own home-brew two-tone decoder. Does anyone happen to
have the pinout for the Permacode filters? These are 4 pin devices and I
suspect the pins are Ground, Power In, Audio In and Audio Out. But I'm
guessing; sort of groping in the dark a bit here. I'm also looking for the
specific voltage used to power the filter. And finally, what's the expected
output from the Permacode filter with the proper frequency input tone? A
sine wave at the desired frequency (like a very high Q band pass filter)?
or is there a level detector in the Permacode filter so the output is a DC
value (i.e, something like low output on correct tone detect and high
output otherwise)?

Is there some place I could get a copy that portion of a Minitor service
manual that shows how the Permacode filter was wired into the system?

I appreciate any information people can provide about these filters.

Thank you.

Paul, ad7i

ad7i at ad7i.net