Heathkit IB-1100 Frequency Counter: History, Restoration, Demonstration, Theory 

In this video, I describe Heathkit's first "low end" or "entry level" frequency counter, their model IB-1100. This turns out to have nearly the same circuit as the more professional IB-1101 frequency counter from the same time period, with just a few places where corners were cut to keep the price lower. In reality, this is a perfectly nice little counter, with very good performance, and easy operator interface, and a nice clear display.
Once I get around to completing the CAD work, my newly CAD drawn IB-1100 schematic, calibration, etc; document will be available for download here: www.serpentwebsite.com/fileshare.htm
Timeline Table of Contents:
00:00 History
03:02 Introduction
06:33 Restoration
13:42 Internal tour
20:14 Demonstration
28:07 Beauty shot
24:40 Heathkit manual
43:49 Schematic diagram/circuit theory

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