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Article #14743Need help with xtals and an xtal scanner
From: Paula Stockholm
Date: Wed, 18 Nov 1992 12:43
Date: Wed, 18 Nov 1992 12:43
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1728 bytes
In article <1992Nov17.175341.20447@CERIS.Purdue.EDU> dheisler@CERIS.Purdue.EDU writes:
>
> Actual frequency : just the straight 14x.xxx right?
No, the actual frequency is the actual minus the i-f (10.8 for
Bearcat, 10.7 for all other scanners.
> holder: what's this? Did i misunderstand?
How is the crystal mounted - solder-in, socket? Which size? I
don't know the specific type names.
> tolerance : is that ppm? what's normal for this sort of thing?
Primarily for transmit crystals. How much can the crystal
frequency vary over a given range of temperature.
> load capacity: is that like power capacity? what's normal?
A crystal operates in parallel or series with a small capacitor
(load capacitance).
Now, after all that; get in touch with a company that deals with
scanners or scanner crystals. They will have all the above info
on file for the various models. Look for names in a Scanner
Guide or communications magazine.
* * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Paula Stockholm paula@nlbbs.UUCP *
* Cumberland, Maine !nlbbs!paula@uunet.uu.net *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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Path: arc1-ca.pugleaf.net!sparky!uunet!gator!nlbbs!uupms!paula From: paula@nlbbs.UUCP (Paula Stockholm) Newsgroups: sci.electronics Subject: Need help with xtals and an xtal scanner Message-ID: <722090633snx@nlbbs.UUCP> Date: Wed, 18 Nov 92 12:43:53 GMT References: <1992Nov17.175341.20447@CERIS.Purdue.EDU> Reply-To: paula@nlbbs.UUCP Distribution: world Organization: The Electronics Workbench Lines: 38