To: | N1BUG <[email protected]> |
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Subject: | Re: LF: Softrock RX divider IC problem, unexpected frequency out |
From: | Chris Wilson <[email protected]> |
Date: | Fri, 26 Jan 2018 18:11:09 +0000 |
Cc: | [email protected] |
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References: | <[email protected]> <1397698645.2553258.1516983835152.JavaMail.open-xchange@oxbe7.tb.ukmail.iss.as9143.net> <[email protected]> |
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Thanks for the replies! Should the `scope show the issue? I have access to a very good SA but am always loathe to use it in case I blow the front end, as at this low a frequency it needs the "absolutely no DC" input port, and DC blocks that I have are iffy this low. Thanks, after dinner I will look at it again with the `scope for a start, now you have all given me some great advice as to possible causes. After I have taken some more measurements with the `scope I may change the crystal and then the divider. Andy is undoubtedly right in that a buffer trigger may be the ideal, but I am not competent to design a circuit with correct values and KISS seems appealing until simpler fixes are checked out ;) -- Best regards, Chris mailto:[email protected] |
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