ما توصّل إليه النقاش

• A 1.2 GHz video transmitter prototype using a Hirosche connector can operate continuously for at least three weeks with a range of approximately three-quarters of a miles in line-of-sight conditions using a whip antenna on the transmitter and yagi on the receiver.
• The system accepts 9.36 volts DC input, features BNC video input, multiple selectable channels via slip shift, and receiver output on 4-pin XLR with 9-36 volt compatibility.
• The 1.2 GHz frequency band offers less congestion than UHF for wireless video transmission.
• Picture quality improves when audio is not mixed with video transmission.
• Reception quality and receiver design are often more critical to performance than transmitter output power for typical film production ranges.
• Non-line-of-sight signal penetration was observed at short range through building structures including elevator shafts and exterior walls.
• Regulatory compliance in the United States may differ significantly from European regulations regarding transmitter output power levels.

يعتمد على

• Initial prototype specifications were from 2006 and may not reflect current designs.
• European legal restrictions on output power in this frequency range conflict with US allowances; this system was specifically not intended for export.
• Field testing was conducted with a pinhole camera and portable LCD monitor rather than professional cinema cameras.
• No comprehensive long-range line-of-sight range testing results with yagi antennas were provided.
• Disagreement exists between contributors regarding regulatory legality of high-power 1.2 GHz transmitters outside the United States.

المعدات في هذا النقاش

Modulusالكتالوج

المعدات أو القطع نفسها

1. 2022Power connector pinout for Master Greenscreen CRT monitor with 6-pin Hirose connectorMonitors
2. 2017تجهيزات لاسلكية للتبريد عن بعد لـ steadicam عمليةGeneral Discussion
3. 2016خصائص الأداء والموثوقية لأجهزة إرسال الفيديو اللاسلكية في تلتاماكس مقارنة بالعلامات التجارية المتنافسةموضع خلافVideo Assist and Video Accessories
4. 2014صندوق تحويلات فولتاغات DC مع نطاق النواتج القابلة للتعديل وملامح الحمايةموضع خلافGeneral Discussion