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  2. Bulletin of the Seismological Society of America - Wikipedia

    en.wikipedia.org/wiki/Bulletin_of_the...

    Bulletin of the Seismological Society of America (BSSA) is a bimonthly peer reviewed scientific journal published by the Seismological Society of America. The editor-in-chief is Thomas Pratt (U. S. Geological Survey). The journal covers seismology and related disciplines.

  3. Seismological Society of America - Wikipedia

    en.wikipedia.org/wiki/Seismological_Society_of...

    The Seismological Society of America publishes the Bulletin of the Seismological Society of America (BSSA), a journal of research in earthquake seismology and related disciplines since 1911, and Seismological Research Letters (SRL), which serves as a forum for informal communication among seismologists, as well as between seismologists and those non-specialists interested in seismology and ...

  4. International Code of Signals - Wikipedia

    en.wikipedia.org/wiki/International_Code_of_Signals

    The Medical Signal Code [13] (incorporated in the International Code of Signals since 1930) is a means of providing assistance when medical personnel are not present. Plain language is generally preferred in such cases (presumably via radiotelephone), but the various codes provide a succinct method of communicating to a doctor the nature of the ...

  5. Signal operating instructions - Wikipedia

    en.wikipedia.org/wiki/Signal_operating_instructions

    They include current and up-to-date information covering radio call signs and frequencies, a telephone directory, code-words (for rudimentary encryption), and visual and sound signals. A designated battalion signal officer prepares the battalion SOI in conformance with the SOI of higher headquarters. [2] During operations, SOI are changed daily.

  6. Ten-code - Wikipedia

    en.wikipedia.org/wiki/Ten-code

    Ten-codes, officially known as ten signals, are brevity codes used to represent common phrases in voice communication, particularly by US public safety officials and in citizens band (CB) radio transmissions. The police version of ten-codes is officially known as the APCO Project 14 Aural Brevity Code. [1]

  7. Q and Z codes - Wikipedia

    en.wikipedia.org/wiki/Q_and_Z_codes

    Q and Z codes, also called Q and Z signals may refer to: Q code , 3-letter code beginning with Q and used by radiotelegraph and other radio services Z code , 3-letter code used in radio communications

  8. Specific Area Message Encoding - Wikipedia

    en.wikipedia.org/wiki/Specific_Area_Message_Encoding

    The text of the header code is a fixed format: <Preamble>ZCZC-ORG-EEE-PSSCCC+TTTT-JJJHHMM-LLLLLLLL- This is broken down as follows: 1. A preamble of binary 10101011 (0xAB in hex) repeated sixteen times, used for "receiver calibration" (i.e., clock synchronization), then the letters ZCZC as an attention to the decoder (a message activation method inherited from NAVTEX).

  9. QSA and QRK radio signal reports - Wikipedia

    en.wikipedia.org/wiki/QSA_and_QRK_radio_signal...

    The QSA code and QRK code are interrelated and complementary signal reporting codes for use in wireless telegraphy . An enhanced format, SINPO code , was published in the ITU Radio Regulations, Geneva, 1959, [ 1 ] but is longer and unwieldy for use in the fast pace of Morse code communications.