Two Communications
@twocommunications.bsky.social
From Terrestrial To Celestial📡
The Boys' First Book Of Radio And Electronics, Designed for young readers, the book introduces the fundamentals of electricity, radio waves, vacuum tubes, receivers, and transmitters. Published By Charles Scribner's Sons, New York, 1st Edition, 1948
January 29, 2026 at 2:11 PM
The Boys' First Book Of Radio And Electronics, Designed for young readers, the book introduces the fundamentals of electricity, radio waves, vacuum tubes, receivers, and transmitters. Published By Charles Scribner's Sons, New York, 1st Edition, 1948
Laser communications in space, also known as free-space optical communication, use tightly focused beams of light to transmit data through the vacuum of space. These systems can operate between satellites or link spacecraft directly with Earth for both uplink and downlink communication.
January 28, 2026 at 2:56 PM
Laser communications in space, also known as free-space optical communication, use tightly focused beams of light to transmit data through the vacuum of space. These systems can operate between satellites or link spacecraft directly with Earth for both uplink and downlink communication.
YU3CST/3 VHF/UHF Contest, circa 1979
January 27, 2026 at 1:57 PM
YU3CST/3 VHF/UHF Contest, circa 1979
Radio repair service in the self-help exchange. Washington, D.C. January 1942
January 26, 2026 at 1:58 PM
Radio repair service in the self-help exchange. Washington, D.C. January 1942
Wardenclyffe Tower (1901–1917), also known as the Tesla Tower, was an experimental wireless transmission tower designed by Nikola Tesla in Shoreham, New York. It was intended to demonstrate long-distance wireless communication, including transatlantic signaling and broadcasting...
January 25, 2026 at 1:47 PM
Wardenclyffe Tower (1901–1917), also known as the Tesla Tower, was an experimental wireless transmission tower designed by Nikola Tesla in Shoreham, New York. It was intended to demonstrate long-distance wireless communication, including transatlantic signaling and broadcasting...
The Hi-Mound HSK-910 is a hand-crafted telegraph key made in Japan by Hi-Mound in the late 1970s
January 24, 2026 at 7:54 PM
The Hi-Mound HSK-910 is a hand-crafted telegraph key made in Japan by Hi-Mound in the late 1970s
DP1POL "Neumayer Station III" Antarctica
January 23, 2026 at 12:56 PM
DP1POL "Neumayer Station III" Antarctica
High above the Arctic Circle, where temperatures crush steel and silence feels absolute, one man sits at a radio set. His callsign is RAEM. Through crackling static and shifting ice, Ernst T. Krenkel keeps humanity connected to a drifting speck of life at the top of the Earth. Every contact is hope.
January 22, 2026 at 1:01 PM
High above the Arctic Circle, where temperatures crush steel and silence feels absolute, one man sits at a radio set. His callsign is RAEM. Through crackling static and shifting ice, Ernst T. Krenkel keeps humanity connected to a drifting speck of life at the top of the Earth. Every contact is hope.
Introduced just after World War II, the S-38 brought shortwave and CW. A promise that shortwave signals could carry listeners beyond borders, at a time when the world was rebuilding.
January 21, 2026 at 1:22 PM
Introduced just after World War II, the S-38 brought shortwave and CW. A promise that shortwave signals could carry listeners beyond borders, at a time when the world was rebuilding.
IK5RP Antenna
January 20, 2026 at 1:36 PM
IK5RP Antenna
IU0PXG Hamshack
January 19, 2026 at 4:57 PM
IU0PXG Hamshack
Botkyrka Radio Amateurs (BRA) was founded on January 18, 1974, originally operating under the name Botkyrka Sändare Amatörer. Over the years, the club’s name evolved with municipal reorganizations and moves between clubhouses, but one thing has remained constant on the bands: the callsign SKØHB
January 17, 2026 at 2:12 PM
Botkyrka Radio Amateurs (BRA) was founded on January 18, 1974, originally operating under the name Botkyrka Sändare Amatörer. Over the years, the club’s name evolved with municipal reorganizations and moves between clubhouses, but one thing has remained constant on the bands: the callsign SKØHB
DG1ROD EME (Earth-Moon-Earth) Antenna
January 15, 2026 at 12:45 PM
DG1ROD EME (Earth-Moon-Earth) Antenna
Reposted by Two Communications
QSL cards are often said to be the final courtesy of a contact. Used since the early 1900s, they record call signs, dates, frequencies, and signal reports. Many feature unique artwork or station photos, making them prized keepsakes and a lasting tradition among radio operators.
January 13, 2026 at 12:47 PM
QSL cards are often said to be the final courtesy of a contact. Used since the early 1900s, they record call signs, dates, frequencies, and signal reports. Many feature unique artwork or station photos, making them prized keepsakes and a lasting tradition among radio operators.
QSL cards are often said to be the final courtesy of a contact. Used since the early 1900s, they record call signs, dates, frequencies, and signal reports. Many feature unique artwork or station photos, making them prized keepsakes and a lasting tradition among radio operators.
January 13, 2026 at 12:47 PM
QSL cards are often said to be the final courtesy of a contact. Used since the early 1900s, they record call signs, dates, frequencies, and signal reports. Many feature unique artwork or station photos, making them prized keepsakes and a lasting tradition among radio operators.
DL1BI, German Amateur Radio Station
January 12, 2026 at 12:55 PM
DL1BI, German Amateur Radio Station
SM5EIE, Heathkit SB Line Station, circa 1970s
January 10, 2026 at 7:21 PM
SM5EIE, Heathkit SB Line Station, circa 1970s
Earth–Moon–Earth communication (EME) on 144 MHz by EA6VQ. In this technique two amateur radio operators on different sides of the world talk to each other by reflecting radio waves off the Moon.
January 8, 2026 at 3:12 PM
Earth–Moon–Earth communication (EME) on 144 MHz by EA6VQ. In this technique two amateur radio operators on different sides of the world talk to each other by reflecting radio waves off the Moon.
JA2YBE Operator during the 1974 Japanese Field Day Contest.
January 7, 2026 at 2:18 PM
JA2YBE Operator during the 1974 Japanese Field Day Contest.
SCARC Field Day 1967
January 5, 2026 at 4:23 PM
SCARC Field Day 1967
Built in the late 1950s and inspired by earlier work with the Würzburg radar dish, the Dwingeloo Radio Telescope became one of the most important instruments in early radio astronomy. Dwingeloo Radio Telescope (1956)
January 3, 2026 at 2:57 PM
Built in the late 1950s and inspired by earlier work with the Würzburg radar dish, the Dwingeloo Radio Telescope became one of the most important instruments in early radio astronomy. Dwingeloo Radio Telescope (1956)
F4JJY Antenna
January 2, 2026 at 1:46 PM
F4JJY Antenna
"3 Resolutions You Should Make For The New Year" | CQ Magazine, January 1965.
Happy New Year!
Happy New Year!
January 1, 2026 at 1:33 AM
"3 Resolutions You Should Make For The New Year" | CQ Magazine, January 1965.
Happy New Year!
Happy New Year!
DB3ZY Antenna
December 30, 2025 at 12:33 PM
DB3ZY Antenna
JY1, King Hussein of Jordan visiting Sweden 1984.
December 29, 2025 at 12:38 PM
JY1, King Hussein of Jordan visiting Sweden 1984.