ما التقنيات التي تستعمل في البث التلفزيوني ؟

04 أبريل 2013

تستخدم امواج الراديو ذات التردد العالي جدا VHS بين 30-300 ميغاهيرتز والذي
يناظر اطوالا موجية تقع بين 1-10 متر في البث التلفزيوني المباشر بواسطة هوائيات المحطات التلفزيونية، ويعتمد المدى المباشر للارسال على مقدار ارتفاع الهوائي لمحطة الارسال، ويمتاز هذا النوع من الاطوال الموجية بعدم تأثره بالضجيج الجوي والتداخل من الاجهزة الكهربائية المختلفة، وتجدر الاشارة الى انه يمكن ان يتم الارسال التلفزيوني بطريقة غير مباشرة عن طريق الاقمار الصناعية والكوابل التلفزيونية.

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أخر المواضيع من قسم : البث التلفزيوني المباشر

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