22. 2. 202213,330 mil. zhlédnutíI must state that in NO way, shape or form am I intending to infringe rights of the copyright holder. Content used is strictly for research/reviewing purpose...
25. 11. 201262 tis. zhlédnutíJoe, K8LKC, introduces his crystal radio capable of receiving CW and SSB signals on the 160 & 80 meter ham bands. Circuit uses variable capacitor tuning, hig...