  
  


     .  ,  ,     -         ,    .     .         :       ,   ,    .       ,  ,    ,      .      .





  





 (Introduction)



           .  ()    ,       ,       .      ,         (SSB/HF),  ,    (EPIRB),  - (SART),   ,       .

      ,  ,    ,     ,   ,     .         ,       .

         ,  ,    ,      .




1.   (Basic radio theory)





1.1. , , ,  (Transmitter, receiver, transceiver, antenna)


     ,    ,     ().   ,   ,    ,    ,    -   .     ,       ,  ,       .        ,       ,     .    ,      ,     ,   ,  ,        .




1.2.  (Frequency)


     ,      ,      .        ,   .  ,    ,   ,    ,     .            ,          .      ,           .




1.3. /  (Radio waves/wavelength)


      .  ,  ,   ,   ,   ,     ,  ()        ,    .

      (    ).         .         (  ),  ,      ,    .  , ,      ,    .  ,    ,   ,    ,    .

  ,       ,    ,   .       ,       ,   19 .       ,   (1 )  1 000   ,    (1 )  1 000 000   .




1.4.   (Radio Frequency Bands)







      :







1.5.   (). (Propagation simplified)


    ,         .  ,   ,   .         ,   ,    ,        .           () .        (),      .






  (Propagation of radio waves)



       .      ,         .          .            ,   ()    .




1.6.   (Range)


         (line of sight).       ,    ,                     .   ,     ,          .




-   ,   ,       ,      ,    .



      ,   :






     ,  ,       ,   ,            (. ).            , ,          .  ,  ,          ,     ,    .




 (Aerial)



     (Relaying messages),            ,      ,     .




        ,       . (A and B cannot talk to each other but they can relay their message through C).






2.  (Subsidiary equipment)





2.1.  (Antennas)


   ,      ,    (Aerial socket).

         ,      ,        ,   , .




2.2.    (Lightening)


     ,       ,      .  ,  ,     ,      .            .




2.3.  . (Aerial cable)


             ,  .  ,      ,  ,      .   , ,   ,   ,      .      ,     .




  (Aerial cable)



          ,      . ,               ,   . ,    ,            ,  ,    .




2.4. SWR Meter


       ,      ,    , (SWR-meter, standing wave ratio meter).






SWR-meter (standing wave ratio meter)






2.5.  (Batteries)


       ,  12  24 ,  .       ,    .        ,    .




2.6.  . (Battery Maintenance)


    , -     .          .

 1,250     ,    ;

 1,150     ,   ;




 (Hydrometer)



        ,     6     .     ,    .    ,      .  12,6    ,   .

     .      ,      .

,   ,    ,        .




2.7.  (Safety)


     .          ,          .

,    ,   .

  ,         ,     (,   ).   ,    . ,    ,  .




2.8.  (Microphone)


        ,   . ,   ,       MIC.






  Hand Microphone



  (Transmit)  .          , ,   , ( Rx    ).

    ,     ,      (  press-to talk    ).          ,    ,        .

    ,    ,  -  ,      ,      .

    :       ,   .     ,   ,   ,  -          .      ,     ,     ,      .

    -  .




3. ,    (Common radio terms)





3.1.  (Simplex operation)





  .


   .

   ,     (https://www.litres.ru/vladimir-egorovich-chirkov/radiosvyaz-na-more/)  .

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