An Eico 145 Signal Tracer - Part 0

https://wereboar.com/projects/index.php/2024/03/17/an-eico-145-signal-tracer-part-0/

Next up is an Eico Model 145 signal tracer. This device, one of many types made during the 1950s-1970s, is a simple replacement amplifier for use in troubleshooting devices. You can follow a signal through a unit, listening to that signal for distortion - or disappearance. They varied from simple amps like this unit, to complex devices that offered ways to substitute output transformers and other circuit components.

The Eico 145, as mentioned, is a simple amp unit, and as such, is an easy rebuild. This first part of the rebuild series is an executive summary look at the inside of the unit and some general musings on what needs to be done. We dive into the unit later, going from old, to stripped, to new over the course of the series. Check it out on my project page, and stay tuned for some more hamfest pictures!