[Elecraft] CK-722

[Phil Hystad]

Wow.  I have not even thought about the CK722 for many decades.  It brings back many memories of my childhood fascination with electronics and those little projects you would read about in various magazines of the day.  I think it was the CK722 that introduced me to the fact that transistors came in PNP and NPN style.  I remember buying parts for a new project that needed the CK722 at United Radio in San Jose California sometime around 1958 I am guessing.  My mom drove me to United Radio, I was only about 11 years old and I did not drive.  I remember that they did not have a CK722 in stock but the guy in the store said that they had an equivalent transistor and it was NPN and he asked me if I knew how to change the circuit wiring for NPN.  At that time, I had no idea what NPN meant as I only did PNP projects for some reason and I didn't really even know what PNP meant.  I can't remember if I ever did that project, I just remember that I did not know how to rewire the circuit for NPN and I did not buy the CK722 that day.

phil, K7PEH

On May 26, 2011, at 8:49 PM, SABorns at aol.com wrote:

> I purchased my first CK-722 in the mid 50's when the price dropped from  
> about $15.50 to $7.50. Shortly afterward the price dropped again to $4.50. I  
> used it in the audio stage of a BC band receiver. Exciting stuff in those  
> days.
> 
> Steve K8IDN
>