Printre modurile de lucru, unul care devine din ce in ce mai frecvent este lucrul in „mobil", avind statia de radio-emisie-receptie instalata la bordul unei masini sau uneori chiar pe…
Este prezentata in fig. 263 si a fost experimentata si pusa la punct de un grup de radioamatori francezi. Este interesanta prin cistigul de cimp substantial (circa 10 dB) si…
Antena, realizata prima oara de radioamatorul englez G5DT, este destul de simpla si eficace (fig. 261).Este compusa din doua etaje de elemente pasive asociate la un radiator de tip schelet.…
Lucreaza pe frecventa de 435 MHz (fig. 260). Se deosebeste de antenele obisnuite prin modul de adaptare a cablului coaxial de alimentare la vibratorul antenei, respectiv adaptarea in Y modificata.…
Are lungimea totala de circa 3,5 m si coeficientul de amplificare de 15 dB. Dimensiunile elementelor antenei sint urmatoarele: reflector 340 mm, toate directoarele 305 mm, vibratorul — un dipol…
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