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Multi tool use
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Eesti elektroonika


Punane RETradioolamaailmanäituselExpo '58Estonia-2monofoonilisepseudostereofoonilinekvaasistereofoonilinestereodekodeerigaEstonia-3MEstonia-4Estonia Stereo










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Estonia-3




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Estonia-3 oli Tallinna raadioelektroonika tehases Punane RET 1962. aastal välja töötatud radioola.


Estonia-3 puhul oli kõrge helikvaliteedi saamiseks kasutatud originaalse konstruktsiooniga laia töösagedusalaga (50..15000 Hz) põhivaljuhääldeid, mis paiknesid eraldi suures kinnises kõlakastis, mis tagas ajastu mõttes väga hea madalamate sageduste taasesituse ja erakordselt hea kõrgete sageduste taasesituse. Analoogiliselt oma maailmanäitusel Expo '58 Brüsselis kuldmedali saanud eelkäijale Estonia-2 kasutati siin samuti täiendavaid väikesevõimsuselisi väliseid lisavaljuhääldeid, mis edastasid ainult kõrgemaid helisagedusi, ning mille kasutamisel tekib monofoonilise heli korral teatav pseudostereofooniline (kvaasistereofooniline) kõlaefekt.


Radioola oli kohandatud ka stereofoonilise vastuvõtu jaoks. Stereofooniline vastuvõtt FM lainealadel põhines külgeühendatava stereodekodeeriga varustatud lisaseadme (vene keeles "stereopristavka") kasutamisele. Stereoheli oleksid edastanud seejuures ainult lisavaljuhääldid kõrgemate helisageduste osas.


Teadaolevalt selle lisaseadme seeriatootmiseni siiski ei jõutud. Ei ole teavet selle lahenduse praktilise realiseerimise kohta ka järgmiste mudelite Estonia-3M ja Estonia-4 juures. Küll aga oli stereofooniline järgmine mudel "Estonia Stereo".









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