As a SWL the Trio Kenwood R-599 was my first professional receiver. I was very proud with this wonderful amateur band receiver. I monitored the amateur bands for a few years and then I was studying for my license. In 1976 I got my C license, only for VHF and UHF. But I wanted to work on HF so I was studying CW and when I reached the 12 words per minute I did the exam. So a half year later I got my Full license. Unfortunately I sold the receiver... shame on me.