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EA1BNF Antenna

#antena #rf

1 like

Collins SC-101 Station Control

Collins SC-101 Station Control, Built by Collins Radio Company during the 1950s #collins #art

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“Righi Oscillator” spark-gap oscillator

“Righi Oscillator” spark-gap oscillator design developed by Italian physicist Augusto Righi in the late 19th century, notable for its use of four metal spheres arranged as a dipole resonator and antenna system. High-voltage pulses from an induction coil were applied to the outer spheres, producing

1 like

Mobile Radio Broadcasting, circa 1928

#mobile #radio

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SP2BUW Antenna

#rf #antenna

2 likes

Paul Dow

Around 1942, Paul Dow began manufacturing Morse bugs in Winnipeg, Manitoba, Canada. Paul Dow believed operators deserved something more comfortable and adjustable. His first major design became known as the “Bent Key,” a distinctive semi-automatic bug with its frame mounted at an angle to provid

2 likes

Radio Astronomers at the United States

In 1956, radio astronomers at the United States Naval Research Laboratory, led by Cornell H. Mayer, aimed a radio telescope toward Venus and detected microwave emissions at a wavelength of 3.15 centimeters. The signals revealed something astonishing: Venus appeared to have a source temperature near

1 like

Van Nuys Junior High Amateur Radio Club

Van Nuys Junior High Amateur Radio Club, circa 1954 #highschool #club

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DL1FL Radio Station, circa 1969

#radioafionado #radiooperator

1 like

PA3DZL Earth-Moon-Earth (EME) Antenna

#eme #moonbounce

1 like

G6YL Radio Station

#radio #radiostation

1 like

PY5DC Antenna

#antena #antenas

1 like

Ipswich Scout Hall, circa 1962

#radio #scout

1 like

The spark-gap transmitter

Before voice, before continuous wave, there was the spark. The spark-gap transmitter was the very first practical radio transmitter—the raw, crackling beginning of wireless communication. Instead of producing a smooth signal like modern radios, it worked by generating bursts of energy—brief, damped

3 likes

General Electric Radio Station 1920s

Testing a row of mercury vapor tubes in a 15,000 volt 3-phase rectifier. General Electric Radio Station 1920s #electric #tubes

3 likes

DK6QI Antenna

#radio afionado #antenna

3 likes

JA1IAM – Home-built shack 1961

#japon #radioafionado

1 like

Antenna, Tagawa City in Fukuoka Prefecture, Japan

#japon #antena

2 likes

Haverfordwest Amateur Radio Society (H.A.R.S.)

#amateurradio #club

1 like

SP3TYF Antenna

#antenna #radioaficionado

1 like

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