Systron Donner Frequency Counter

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

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. Mar mon 14 2005 11 17 am. Heathkit frequency counter im 4120. Good used condition i can t find the plug so can t confirm that it works.

Jan thu 01 1970 1 00 am posts. Systron donner 6241a frequency counter 20hz 100 mhz adjustable sensitivity. 199 95 29 95 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.

Systron donner frequency counter repairs replaced 7441 nixie tube driver chip and replaced blown diodes on input board. Albuquerque nm 87123 hi grampibear br there is one thing you might try that is not guaranteed to work. Systron donner frequency counter 6202b. This is a systron donner model 114 frequency counter.

41 91 0 bids 102 60 shipping. After a preset period known as the gate time 1 second for example the value in the counter is. It uses nixie tubes and ttl logic to implement the core functionality. Systron donner 6152 freq counter timer 8 digit nixie display.

60 00 shipping. Systron donner frequency counter. Component datecodes are from the late 60s to early 70s. Find great deals on ebay for systron donner counter.

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. Worked when it was retired.