My constructions :

1. My first linear amplifier – 2 x QB5/1750 (construction 1978.)
2. Linear amplifier for 40m band – 2 x QB5/1750
3. Linear amplifier for 160m band – 3 x QB5/1750
4. Linear amplifier for 20m band – 2 x QB5/1750
5. Power supply 1  – 5kV/5A
6. Power supply 2 – 5kV/5A
7. Transistor linear amplifier – 600W PEP
   
8. 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.
   
9. Linear amplifier 600W with tube QB4/1100
   
10. High power antenna switch for 5 antenna systems with remote box for 14 MHz Yagi antenna system
    
11. High power antenna switch for 6 antenna systems with remote box for 21 MHz Yagi antenna system
    
12. High power quarter-wave matching system for stacking 3 four elements Yagi antennas for 28MHz
    
13. High power antenna switch for 6 antenna systems with remote box for 28 MHz Yagi antenna system
    
14. High power antenna switch for 40m , 20m 15m and 10m antenna systems