What the thread found

• 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 mile 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 slide switch, 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.

Depends on

• 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.

Gear in this thread

Moduluscatalog

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