17 10 2025
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Where is the best place to install an RTK antenna on machinery to minimise interference?
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The optimal location for RTK antenna installation is the highest point of the cab or engine compartment roof with unobstructed sky access. The recommended mounting height is at least 2-3 metres above ground level, ensuring positioning accuracy up to 2.5 cm. For maximum signal stability, it's advisable to use two RTK modems with different operator SIM cards.
Technical requirements for antenna placement
Height and positioning RTK antennas require direct line-of-sight with satellites at least 15 degrees above the horizon. On agricultural machinery, the optimal installation height ranges from 2.5-4 metres. This ensures stable signal reception even when operating on slopes.
Distance from metallic structures The minimum distance to metallic parts of machinery should be 50-80 cm. Metal surfaces create radio wave reflections, leading to signal multipath effects and reducing accuracy to 10-15 cm instead of the standard 2.5 cm.
Impact of obstacles on RTK signal quality
| Obstacle type | Accuracy reduction | Recommended measures |
|---|---|---|
| Trees | Up to 50% | Use of dual antennas |
| Buildings | Up to 70% | Increase antenna height |
| Metal structures | Up to 60% | Increase distance to 1m |
| Power lines | Up to 40% | Avoid working under power lines |
Dual-mode RTK system for reliability
Using two SIM cards Installing RTK modems with two SIM cards from different operators increases connection reliability by 85-90%. When one operator's signal is lost, the system automatically switches to the backup channel within 3-5 seconds.
Antenna redundancy On wide-implement machinery (over 18 metres), it's advisable to install two RTK antennas on opposite sides. This compensates for temporary signal loss during turns and when working near obstacles.
Practical installation recommendations
Mounting and stabilisation The antenna must have robust mounting capable of withstanding vibrations and impact loads. Use shock-absorbing pads and additional guy wires when operating at speeds exceeding 15 km/h.
Protection from damage When working with tall crops, install protective housings. This reduces the risk of mechanical damage by 60% compared to open mounting.
Working in challenging conditions
Operating near buildings When working within 100 metres of tall buildings, it's recommended to raise the antenna an additional 0.5-1 metre. This compensates for signal reflection from vertical surfaces.
Shelter belts and orchards Stable satellite signals are critically important for autopilot operation. In partially shaded conditions, use antennas with enhanced reception or dual-receiver systems.
Optimisation for different work types For field crops, a single antenna at 3 metres height is sufficient. When working in orchards and vineyards, install the antenna at the maximum possible height with additional signal amplification.
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