- SKU: IH-TETHER-40K
- VENDOR: FPV-DIY
FPV Fiber Optic Tether System – 40 km / 50 km, Built-in Airborne Unit, Full Kit with Ground End & Accessories
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Overview
Engineered for extreme long-range FPV relay and UAV backbone missions, this fiber optic tether system delivers 40 km or 50 km of pure optical transmission – with the airborne unit (sky end) already integrated inside the fiber reel. No need to source or mount a separate transmitter on your aircraft; simply connect, deploy, and fly.
This is a complete turnkey package – everything from the optical core to the ground receiving station is included, allowing for rapid field setup and reliable beyond-visual-line-of-sight (BVLOS) operation.
Key Specifications
| Parameter | Details |
|---|---|
| Available Lengths | 40 km / 50 km |
| Fiber Type | G657A2 (bend-insensitive) |
| Fiber Outer Diameter | 0.27 mm ± 0.02 mm |
| Operating Temperature | -40℃ ~ +85℃ |
| Airborne Unit | Built-in (integrated inside the reel) |
| Ground Unit | Included (external module) |
What's Included (Full Package)
| Item | Quantity |
|---|---|
| Fiber optic tether reel (40 km or 50 km) with built-in airborne unit | 1 × |
| Flight control cable (FC cable) | 1 × |
| Ground end unit (receiver/decoder module) | 1 × |
| BNC video cable | 1 × |
| Bend tube | 1 × |
| Mounting bracket (for secure airframe attachment) | 1 × |
| Cable ties / zip ties | Set |
✅ Everything you need in one box – no additional transceivers, cables, or brackets to purchase separately.
Why Choose This Extended-Range System?
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Built-in airborne unit – eliminates the complexity of integrating a separate sky-end transmitter; reduces payload weight and wiring hassle on your drone.
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Ready-to-fly out of the box – full accessory kit means faster deployment in the field, with no last-minute parts hunting.
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G657A2 bend-insensitive fiber – ensures stable signal integrity even during sharp turns and high-vibration flight conditions.
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All-weather reliability – -40℃ to +85℃ operating range guarantees performance in deserts, glaciers, and humid coastal zones alike.
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Dual length options – choose 40 km for regional missions or 50 km for maximum operational reach.
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BNC video output – universal compatibility with most ground station monitors and DVR systems.
Package Contents – At a Glance
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Fiber Reel (Airborne Unit Pre-Installed) – 1
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Flight Control Cable – 1
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Ground End Module – 1
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BNC Video Cable – 1
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Bend Tube – 1
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Mounting Bracket – 1
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Cable Ties – Set
Ordering Reference
| Length | Airborne Unit | Ground End | Bracket & Ties | SKU Reference |
|---|---|---|---|---|
| 40 km | Built-in ✅ | Included ✅ | Included ✅ | IH-TETHER-40K |
| 50 km | Built-in ✅ | Included ✅ | Included ✅ | IH-TETHER-50K |
Shipping & Support
For the full list of countries and regions we ship to, please refer to our Shipping Policy page.
Bulk orders, white-label packaging, and technical integration support are available – reach out to our team for a customized quotation.
Free shipping on orders over $50
Standard delivery within 2–5 business days
Easy 30-day returns
Return items in original condition for a full refund
