Beginning of worked with call sign YU4CW

After passing the I. class (now A class) for radio operator, obtaining a license to work with the call sign YU4CW and moving to a newly built house, I continued to work on acquiring new DXCCs (312), working on competitions and improving and increasing CW speed as a member of the HSC club, and as a member since the beginning of 1988 I have HSC No. 1473. ..

      

     The purchase of a new Kenwood line, equipment, antennas, etc. changed the way and possibilities of my amateur radio work. Although there was not enough time for more activities due to work, from 1971 to 1990. QSL cards continued to come, directly or through the bureau. During that period I managed to collect and confirm 312 DXCC entities, but unfortunately there was no LoTW, and the paper QSL cards and the set of LOGs were lost, there was nothing of value from my amateur radio work.
After 1990 I had to stop my hoby amateur CW practice