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Fluke/Philips PM66xx Frequency Counter OCXO Upgrade

Fluke/Philips PM66xx Frequency Counter OCXO Upgrade

In this post Dan Watson documents an OCXO upgrade board he designed for the Fluke/Philips PM66xx line of frequency counters.

A few months ago I purchased a Philips PM6674 frequency counter on eBay. It’s an older 9 digit counter with two channels that has a maximum input frequency of 550MHz. The design feels dated compared to more modern counters, such as my Agilent 53131A.

Fluke/Philips PM66xx Frequency Counter OCXO Upgrade – [Link]

The post Fluke/Philips PM66xx Frequency Counter OCXO Upgrade appeared first on Electronics-Lab.

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