Systron Donner Frequency Counter

Basic comparison checks with similar test equipment confirms unit is still.

Systron donner frequency counter.

Good used condition i can t find the plug so can t confirm that it works. Systron donner frequency counter. Systron donner frequency counter repairs replaced 7441 nixie tube driver chip and replaced blown diodes on input board. Component datecodes are from the late 60s to early 70s.

Mar mon 14 2005 11 17 am. 60 00 shipping. 41 91 0 bids 102 60 shipping. It uses nixie tubes and ttl logic to implement the core functionality.

Systron donner frequency counter from 1973 with nixie tube display the early nixie displays were made by a small vacuum tube manufacturer called haydu brothers laboratories and introduced in 1955 5 by burroughs corporation who purchased haydu. Find great deals on ebay for systron donner counter. After a preset period known as the gate time 1 second for example the value in the counter is. Heathkit frequency counter im 4120.

199 95 29 95 shipping. Systron donner frequency counter from 1973 with nixie tube display. Systron donner 6241a frequency counter 20hz 100 mhz adjustable sensitivity. Jan thu 01 1970 1 00 am posts.

Frequency counters email to friends share on facebook opens in a new window or tab share on twitter opens in a new window or tab share on pinterest opens in a new window or tab add to watchlist. This is a systron donner model 114 frequency counter. If the input is 50 ohms sometimes you can get away with changing this resistor to 100k or. Most frequency counters work by using a counter which accumulates the number of events occurring within a specific period of time.

Systron donner frequency counter 6202b. Worked when it was retired.