Greetings!

[Johan Potgieter]

Since I notice a number of of folks who have been here for years, posted orders more than myself and only introduce themselves now, I will carefully venture out of the woodwork waving a white cable ......

The gist of my CV is under my name (I am not "in your thoughts, somewhere on planet earth, NA" or such). I am an EE, graduated in 1966 (after returning to varsity). I was employed for most of my career at the Council for Scientific and Industrial Research (CSIR), and retired from formal employment in 1994. Since building audio stuff and being a consultant.

From the just about everything we had to do at the CSIR (dc. to rf.), especially in the early years, perhaps my most interesting work was the design and production of animal tracking radio equipment. With our vast wild life terrains, I was priviledged to do some modest ground-breaking work, leading to several appreciated overseas visits.

But this is a DIY forum. I did that since about 1949. I built the neatest looking equipment from the start, but it was a while before any of them worked .........

Started with the classic crystal set of course, followed by a regenerative AM radio with a 1D8GT diode-triode-pentode. (That is a vacuum tube; we could not even spell transistor those days.) My first serious design/construction was a 9 tube all-wave superhet (1950) using 6SK7, 6SA7, 6SG7, 6SQ7, 6SJ7, 6SL7, p.p. 6V6 and 5V4. (Still have it on the shelf, still works!).

Perhaps one more "achievement" (at least for me) was the design/construction of a 150W hi-fi-/p.a. amplifier in 1956, using 4x KT66 in the classic Quad II distributed load output topology. Since then .... but not to bore members.

Hobbies: Photography, writing, acting, hiking, painting, and I am a police reservist. Oh yes and the dog!

Thanks for interest.

[Cal Weldon]

Hi Johan,

It seems a bit strange to welcome you after this amount of time but what the heck...Welcome