EI 515

In My Life in Totalitarianism 1941-1991, Peter Starič wrote:

[1966-1967] The Yugoslav enterprise Elektronska Industrija (EI) had displayed a copy of a Tektronix oscilloscope, which they were producing. From outside, it looked almost like a genuine Tektronix oscilloscope, type 515. Since EI lacked some parts, which were produced at Tektronix for their exclusive use, the inside of the instrument was slightly different. Still worse was its performance in comparison with the copied model because they did not do a thorough circuit analysis of the more sophisticated details. (I had the opportunity to examine this instrument already several months earlier. We called it “Serbonix.”)

When Arthur and I came to the EI stand, asking for some details of this oscilloscope, we were told that they had the Tektronix license (!). Arthur just replied he was hearing this for the first time.