19 October 2017

New toy: 500 MHz Philips frequency counter

At the Mercatino by ARI Biella in October 2017 my Nixie-radar noticed a frequency counter with as many as 9 tubes. It is a Philips PM6645 500 MHz device, with excellent sensitivity and 10 MHz OCXO reference. Considering that I had a 100 MHz kit-built counter, given the price and the specs I couldn't let it on the table.

At 80€ the beauty came home with me, an early Xmas present:

It mounts common ZM1005 Nixies. It is built with still commonly available parts in case something breaks