Hello Group,
I just came across my Eico code osc which I built back from a kit in 1967 while learning morse to get my licence. I tried it but it does not work.
It is a simple circuit with 2 transistors ,one resistor and a ceramic capacitor.
I have checked both transistors and both are faulty. Does any one still have the circuit diagram for it or still remember which type of transistors were used. One is a big one like the 2N3055 ( TO 203), may be PNP and the other is a amaller metal can type , like the 2n3053(TO 205). I tried Google but was unsuccessful.
I can build a newer version with the 555 timer , but I want to get this one working as it brings back lots of nice memories to me.
Thanks
Jacky 3B8CF