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سلسلة 1.2 جيجا هرتز

High-Performance 1.2 GHz FPV Video SystemsAs a Senior FPV Engineer specializing in the 23cm band, I can tell you that the 1.2 GHz VTX remains the gold standard for long-range (LR) and non-line-of-sight (NLOS) penetration. While the industry has pushed toward 5.8GHz for racing, the 1.2 GHz FPV ecosystem is essential for pilots pushing beyond the 10km mark. Utilizing the 1200MHz to 1300MHz spectrum, a 1.2 GHz video transmitter offers a wavelength that physically wraps around obstacles, providing a robust link where higher frequencies fail.Technical Comparison: 1.2 GHz vs. 5.8 GHzFeature1.2 GHz (23cm Band)5.8 GHz (ISM Band)Max Range (LOS)40km – 100km+5km – 15kmSignal PenetrationExtreme (Trees, Buildings)Low (Moisture/Solid objects)Antenna SizeLarge (Dipole ~12cm)Small (Circular ~3cm)Interference RiskGPS & 2.4GHz Control LinksWiFi & Other PilotsVideo QualityAnalog (Standard Definition)Analog/Digital (HD Available)Expert Buying Guide: Solving Real-World 1.2 GHz IssuesTransitioning to 1.2 GHz FPV isn’t just about swapping a module; it requires an engineering mindset to avoid common pitfalls like ‘RF noise floor’ elevation. Based on community feedback and bench testing, here are the critical factors to consider:Thermal Management & Overheating: Much like a bare metal server hitting a thermal throttle, a 1.2 GHz video transmitter FPV setup generates significant heat. If your fans aren’t spinning up or you lack airflow, the VTX will ‘Prochot’ (thermally protect) and drop output power. Always ensure your VTX is in the prop wash.Frequency Congestion: With the rise of 1.2 GHz internet service and high-end consumer electronics, the noise floor in urban areas is rising. For clean video, use a 1.2 GHz antenna FPV with a high-quality SAW filter on your 1.2 GHz VRX.The GPS/Control Link Conflict: 1.2GHz is notorious for ‘stepping on’ GPS signals. If you notice your satellite count dropping, you need a Notch Filter. Check our Drone Tools for shielding copper tape and filters.Voltage Sag & Power: High-power VTXs like the Matek 1.2 GHz VTX أو Partom 1.2 GHz units are sensitive to voltage fluctuations. Use a dedicated LC filter to prevent ‘jello’ in your feed caused by ESC noise.Looking for the latest hardware? Browse our New FPV Arrivals for the newest 1.3GHz-capable modules.Safety Warning: 1.2GHz VTX units can reach temperatures exceeding 80°C. Never power on the device without a 1.2 GHz antenna attached, as the reflected SWR will likely fry the output stage (RF power amplifier) within seconds.Frequently Asked Questions (FAQ)What is a 1.2 gigahertz signal?The 1.2 GHz band (specifically 1240-1300 MHz) is part of the UHF/L-Band spectrum. In FPV, it is used for long-distance analog video transmission due to its large wavelength and superior diffraction properties compared to 5.8GHz.What is the range of 1.2 GHz FPV?A standard 800mW 1.2 GHz VTX can achieve 25-40km with standard dipoles. When paired with a high-gain parabolic or helical antenna on the ground station, ranges exceeding 100km are possible, provided you have a clear Line of Sight (LOS).Is 1 GHz 1 billion Hz?Yes, 1 GHz (Gigahertz) equals one billion cycles per second. In FPV, this frequency determines the wavelength; at 1.2GHz, the wavelength is approximately 23cm, which allows the signal to pass through foliage more effectively than the 5cm wavelength of 5.8GHz.What are the health risks of radio frequencies?Exposure to high-intensity RF (like 2W+ VTXs) can cause localized tissue heating. Always maintain a safe distance from high-gain directional antennas during operation and never touch an active VTX antenna.What band is 1.3 GHz?1.3 GHz falls within the ‘L Band’ (1-2 GHz). In the FPV community, 1.2GHz and 1.3GHz are often used interchangeably, as most 1.2 GHz VRX receivers cover channels from 1080MHz to 1360MHz.

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