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  2. Yaesu (brand) - Wikipedia

    en.wikipedia.org/wiki/Yaesu_(brand)

    Yaesu is a Japanese brand of amateur radio equipment, founded as Yaesu Musen Co., Ltd. (八重洲無線株式会社, Yaesu Musen Kabushiki-gaisha) in 1959 by a Japanese radio amateur Sako Hasegawa (call sign JA1MP [1]) in Yaesu, Japan, a district of Tokyo.

  3. List of communications receivers - Wikipedia

    en.wikipedia.org/wiki/List_of_communications...

    Yaesu FRG-7000 Hobbyist 1977-1980 .25-30 Triple conversion Wadley loop AM, LSB, USB, CW 3 6 no 7 7 2 no Yaesu FRG-7700 Hobbyist 1981-1984 .015-30 AM, SSB, CW and FM (12) (72) 6 330 x 127 x 254 8 11 2 [76] Yaesu FRG-8800 Hobbyist 1984-1993 .015-30 triple conversion AM, SSB, CW, FM 12 6.1 334 x 118 x 225 8 38 2 CAT [77] Yaesu VR-5000 Hobbyist .1-2600

  4. List of amateur radio transceivers - Wikipedia

    en.wikipedia.org/wiki/List_of_amateur_radio...

    The Yaesu FT-857 is one of the smallest MF/HF/VHF/UHF multimode general-coverage amateur radio transceivers. [46] The set is built by the Japanese Vertex Standard Corporation and is sold under the Yaesu brand. [47] The FT-857 is developed on the FT-897 and MARK-V FT-1000MP transceivers. [46]

  5. Yaesu VX series - Wikipedia

    en.wikipedia.org/wiki/Yaesu_VX_series

    The Yaesu VX-1R is a micro-miniature multiband FM transceiver with extensive receiver frequency coverage intended for use in licensed "Ham" or amateur radio operations. It is purportedly the smallest UHF/VHF hand-held transceiver available, with dimensions of 4.7 × 8.1 × 2.5 cm (1.9 × 3.2 × 1.0 in).

  6. Wadley loop - Wikipedia

    en.wikipedia.org/wiki/Wadley_loop

    The radio receiver Yaesu FRG-7000 uses the "Wadley loop". [1] XCR-30. The "Wadley-drift-canceling-loop", also known as a "Wadley loop", is a system of two oscillators, a frequency synthesizer, and two frequency mixers in the radio-frequency signal path. The system was designed by Dr. Trevor Wadley in the 1940s in South Africa.

  7. List of amateur radio modes - Wikipedia

    en.wikipedia.org/wiki/List_of_amateur_radio_modes

    Morse code is called the original digital mode. Radio telegraphy, designed for machine-to-machine communication is the direct on / off keying of a continuous wave carrier by Morse code symbols, often called amplitude-shift keying or ASK, may be considered to be an amplitude modulated mode of communications, and is rightfully considered the first digital data mode.

  8. Yaesu FT-817 - Wikipedia

    en.wikipedia.org/wiki/Yaesu_FT-817

    The following circuit description is an extract from the service manual [7] RX signals may be input via a front BNC connector or a rear UHF SO-239 connector (Yaesu calls it a type "M" connector) using a relay on the PA unit.

  9. Radio receiver - Wikipedia

    en.wikipedia.org/wiki/Radio_receiver

    GNSS receivers are sold as portable devices, and are also incorporated in cell phones, vehicles and weapons, even artillery shells. VOR receiver - navigational instrument on an aircraft that uses the VHF signal from VOR navigational beacons between 108 and 117.95 MHz to determine the direction to the beacon very accurately, for air navigation.