Systron Donner Frequency Counter

Systron donner 6241a frequency counter 20hz 100 mhz adjustable sensitivity.

Systron donner frequency counter.

Systron donner frequency counter repairs replaced 7441 nixie tube driver chip and replaced blown diodes on input board. 199 95 29 95 shipping. 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. Jan thu 01 1970 1 00 am posts.

Find great deals on ebay for systron donner counter. Systron donner frequency counter from 1973 with nixie tube display. Mar mon 14 2005 11 17 am. 41 91 0 bids 102 60 shipping.

Systron donner frequency counter. Most frequency counters work by using a counter which accumulates the number of events occurring within a specific period of time. 60 00 shipping. 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.

Item 6 systron donner model 6054b frequency counter tested working 115 230v 6 systron donner model 6054b frequency counter tested working 115 230v 378 83 182 96 shipping. Component datecodes are from the late 60s to early 70s. It uses nixie tubes and ttl logic to implement the core functionality. Systron donner frequency counter 6202b.

After a preset period known as the gate time 1 second for example the value in the counter is. Worked when it was retired. Albuquerque nm 87123 hi grampibear br there is one thing you might try that is not guaranteed to work. Good used condition i can t find the plug so can t confirm that it works.

If the input is 50 ohms sometimes you can get away with changing this resistor to 100k or. Heathkit frequency counter im 4120.