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Homebrew: 'Galena 2'. Medium Wave (MW) mechanical crystal radio receiver. Made by my self.

Homebrew: 'Galena 2'. Medium Wave (MW) mechanical crystal radio receiver. Made by my self.

EARLY RADIO MUSEUM - TELEGRAPH & SCI INSTRUMENT MUSEUMS

EARLY RADIO MUSEUM - TELEGRAPH & SCI INSTRUMENT MUSEUMS

Antique iPod/MP3 amplifier and speaker made from 1920s Atwater Kent radio parts.

Antique amplifier and speaker made from Atwater Kent radio parts.

AB2FG's regen radio for 80 meters based on design by Charles Kitchin, N1TEV, in Nov/Dec 1998 QEX. This is a work in progress, lashed together to get a feeling for how well the circuit works. Answer: amazing performance for such few parts. Larger board to left is RF portion: RF amp and detector. Smaller board to right is quick-and-dirty audio amp. His plan is to pretty this up into one box and eventually pair with a to-be-built QRP CW transmitter

AB2FG's regen radio for 80 meters based on design by Charles Kitchin, N1TEV, in Nov/Dec 1998 QEX. This is a work in progress, lashed together to get a feeling for how well the circuit works. Answer: amazing performance for such few parts. Larger board to left is RF portion: RF amp and detector. Smaller board to right is quick-and-dirty audio amp. His plan is to pretty this up into one box and eventually pair with a to-be-built QRP CW transmitter

Stone Vintage Radio Museum - Antique Radios, Wireless, Crystal Sets, Tubes, and Valves

Stone Vintage Radio Museum - Antique Radios, Wireless, Crystal Sets, Tubes, and Valves

大人の物欲】10円玉でラジオか聞...

大人の物欲】10円玉でラジオか聞...

Loud MW Diode Radio V2 From Above

Describing how to make a Practical Crystal Set AM Radio That is Quite Loud