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Citizens band radio
Videos
Citizens band radio is a land mobile radio system, a system allowing short-distance one-to-many bidirectional voice communication among individuals, using two-way radios operating near 27 MHz in the h
Typical 1980s CB radio intended for use at a fixed location and used with outdoor antenna. Base stations are usually operated on household AC power bu
Typical 1980s CB radio intended for use at a fixed location and used with outdoor antenna. Base stations are usually operated on household AC power but can also be used from a vehicle's DC power system if operated in a vehicle or from an emergency battery source. Shown with Astatic brand D-104 desk mic
Cobra 18 WX ST II mobile CB radio with microphone
Cobra 18 WX ST II mobile CB radio with microphone
Cobra 50 WX ST Handheld CB Radio
Cobra 50 WX ST Handheld CB Radio
A QSL card issued by a US CB station in 1963
A QSL card issued by a US CB station in 1963
Yagi–Uda antenna
Videos
A Yagi–Uda antenna, or Yagi antenna, is a directional antenna consisting of two or more parallel resonant antenna elements in an end-fire array; these elements are most often metal rods acting as half
Citizens band radio
…radio propagation conditions may intermittently allow communication over much greater distances. Base stations however may be connected to a directional Yagi–Uda antenna commonly called a Beam or a Yagi. Multiple countries have created similar radio services, with varying technical standards and requirements for licensing…
A modern high-gain UHF Yagi television antenna with 17 directors, and one reflector (made of four rods) shaped as a corner reflector
A modern high-gain UHF Yagi television antenna with 17 directors, and one reflector (made of four rods) shaped as a corner reflector
Quartet of two-dipole Yagi arrays (Hirschgeweih) of the German FuG 220 VHF-band radar on the nose of a late-World War II Bf 110 night fighter aircraft
Quartet of two-dipole Yagi arrays (Hirschgeweih) of the German FuG 220 VHF-band radar on the nose of a late-World War II Bf 110 night fighter aircraft
A portable Yagi–Uda antenna for use at 144 MHz (2 m), with segments of yellow tape-measure ribbon for the arms of the driven and parasitic elements.
A portable Yagi–Uda antenna for use at 144 MHz (2 m), with segments of yellow tape-measure ribbon for the arms of the driven and parasitic elements.
Two Yagi–Uda antennas on a single mast. The top one includes a corner reflector and three stacked Yagis fed in phase in order to increase gain in the
Two Yagi–Uda antennas on a single mast. The top one includes a corner reflector and three stacked Yagis fed in phase in order to increase gain in the horizontal direction (by cancelling power radiated toward the ground or sky). The lower antenna is oriented for vertical polarization, with a much lower resonant frequency.