- My first linear amplifier – 2 x QB5/1750 (construction 1978.)
- Linear amplifier for 40m band – 2 x QB5/1750
- Linear amplifier for 160m band – 3 x QB5/1750
- Linear amplifier for 20m band – 2 x QB5/1750
- Power supply 1 – 5kV/5A
- Power supply 2 – 5kV/5A
- Transistor linear amplifier – 600W PEP
- System for distribution receiving signal from 6 Beverages and other receiving antennas with filters for 160m, 80m and 40m and remote boxes with 18db preamplifier for 160m, 80m and 160m.
- Linear amplifier 600W with tube QB4/1100
- High power antenna switch for 5 antenna systems with remote box for 14 MHz Yagi antenna system
- High power antenna switch for 6 antenna systems with remote box for 21 MHz Yagi antenna system
- High power quarter-wave matching system for stacking 3 four elements Yagi antennas for 28MHz
- High power antenna switch for 6 antenna systems with remote box for 28 MHz Yagi antenna system
- High power antenna switch for 40m , 20m 15m and 10m antenna systems