Micro-Line Spool Series FPV Optical Fiber Kit | Ultra-Micro Fiber Reels for UAV & FPV

■ Micro-Line Spool Series FPV Optical Fiber Kit

■ Product Overview

The ZION Micro-Line Spool Series is an ultra-advanced optical tether solution for UAVs, FPV, industrial robots, inspection drones, and distance communication in challenging environments.

With its 0.28–0.40 mm micro-diameter fiber, protected using transparent resin or Kevlar fibre options, it offers a stable optical transmission, which is un-jammable and ultra-low-loss ranging 1 km to 50 km.

Whether it’s long-distance FPV, surveillance, pipeline inspection, tough industrial sites, or deep-space areas, the Micro-Line Spool makes sure you’re able to transmit HD video, controls, and carry out the mission.

■ Key Features

• Ultra-Micro Fiber Diameter (0.28–0.40 mm)
  Featherweight for UAV convenience
  Almost nil aerodynamic obstruction
  Supports high-speed digital-analog HD transmission
  Suitable for low-prolonged-distance tether applications

3 Unique Structural Options

• Resin-Coated Micro Fiber (0.28 mm)
  • Transparent buffer coating
  • Improved bending performance and flexibility
  • Best for UAV/FPV type applications

• Kevlar-Reinforced Fiber (0.28 / 0.35 / 0.40 mm)
  • High tensile strength
  • Impact-proof and abrasion resistant
  • Best for outdoor or rough environments needing stability

Full Range with Distance (1–50 km)

Spool options to choose:

1 km / 2 km / 3 km / 5 km / 10 km / 15 km / 20 km / 25 km / 30 km / 35 km / 40 km / 45 km / 50 km

Works for the following use cases:

• Long-range FPV flyby

• Police/security patrol surveillance

• Pipe inspection robot

• Emergency industrial modem

• High-EMI locations

■ Excellent Optical Performance

• Bend Insensitive G657A2 fiber

• Low insertion loss:
  • ≤0.35 dB/km @ 1310 nm
  • ≤0.25 dB/km @ 1550 nm

• No signal loss HD for video and control

• Rugged optical performance: un-jammable, no EMI interference

■ External Spool with Rugged ABS Housing

• Rugged impact-resistant ABS

• Fast to deploy and replace

Spool Size (D × H)	Fiber Length Options
88 × 121 mm	1 km / 2 km
121 × 246 mm	3 km / 10 km
147 × 276 mm	15 km / 30 km
147 × 355 mm	35 km / 50 km

 The Micro-Line Spool is based on an open-reel design (not inner-reel) that supports easy switching.

■ Model Specifications

Resin-Coated Series (0.28 mm)

Distance	Model	Diameter	Reel Size	Fiber + Reel Weight
1 km	FC-0.28-1	0.28 mm	88 × 121 mm	260 g
2 km	FC-0.28-2	0.28 mm	88 × 121 mm	330 g
3 km	FC-0.28-3	0.28 mm	121 × 246 mm	600 g
5 km	FC-0.28-5	0.28 mm	121 × 246 mm	780 g
10 km	FC-0.28-10	0.28 mm	121 × 246 mm	1150 g
15 km	FC-0.28-15	0.28 mm	147 × 276 mm	1650 g
20 km	FC-0.28-20	0.28 mm	147 × 276 mm	1940 g
25 km	FC-0.28-25	0.28 mm	147 × 276 mm	2350 g
30 km	FC-0.28-30	0.28 mm	147 × 276 mm	2700 g
35 km	FC-0.28-35	0.28 mm	147 × 355 mm	3300 g
40 km	FC-0.28-40	0.28 mm	147 × 355 mm	3700 g
45 km	FC-0.28-45	0.28 mm	147 × 355 mm	4100 g
50 km	FC-0.28-50	0.28 mm	147 × 355 mm	4600 g

 

■ FPV Drone Fiber-Optic Tether 30 Min Flight Test 

■ Wide Operational Temperature

• –40°C to +85°C

• Suitable for high-altitude/cold/hot rapid missions

• Can be deployed outdoors 24/7

■ Kevlar-Reinforced Series (0.28 / 0.35 / 0.40 mm)

• Anti-tensile, anti-abrasion, anti-impact

• Best for challenging environments needing stability and reliability

• Approx. Weight: 130 g/km

• Multiple diameter series: at least 3 different thickness available. Flexible or strong

• (Variants may carry the same distance options as Series Resin.)

■ Compatible Terminal Systems (Optional)

• Core Function:
  Serves as the central module of the fiber-reel anti-interference communication system, enabling stable signal transmission in high-EMI environments.

• Signal Conversion:
  Performs bidirectional conversion between electrical and optical signals, supporting Ethernet data, video signals, and control protocols.

• Optical Transmission:
  Converts electrical signals into optical signals for long-distance, low-loss transmission through the fiber spool.

• Electrical Restoration:
  Recovers optical signals back into electrical form at the receiving end, ensuring full compatibility with downstream equipment.

• Anti-Interference Capability:
  Provides inherently EMI-immune communication, maintaining stable performance even in RF-contested or electrically noisy environments.

A-Type Integrated Terminal

Item	Optical Terminal A Type (Supports HD Analog)
Model	Optical Terminal A Type
Bare Board Size	70 × 50 × 16 mm
Weight	35 g ± 2 g
Power Supply	DC 5 V ~ 27 V
Communication Distance	Depends on the transmission distance and the attenuation of the optical fiber used
Supported Crossover Protocols	SBUS & CRSF
Data Interface	GH1.25 8-Pin InterfaceRJ45 Port, 100 Mbps
Optical Interface	Single-mode, Single-fiber FC (max. 40 km)
Pilot Lamps	PWR – Power Indicator SYC – Optical Sync Indicator

 

B-Type Integrated Terminal

Item	Optical Terminal B Type
Model	Optical Terminal B Type
Fuselage Size	105 × 70 × 28 mm
Weight	220 g ± 2 g
Power Supply	DC 5 V ~ 27 V
Housing	Metal (Desktop Type)
Communication Distance	Depends on transmission distance and fiber attenuation; optional configurations available
Supported Crossover Protocols	CRSF-PPM & SBUS-PPM
Optical Interface	OPT (Single-mode, Single-fiber FC up to 40 km)
Power Interface	XT60 (DC IN)
Video Output Interface	Video (Analog): BNC ETH (High-Definition IP): RJ45 – 100 Mbps
Data Interface	GH1.25 8-Pin Connector / Cable
Indicator Lamps	PWR – Power Indicator SYC – Optical Sync Indicator Video – Video Output Indicator SDY – Wired Signal Indicator

 

Mini A-Type Integrated Terminal

Item	Mini Optical Terminal A Type
Model	Mini Optical Terminal A Type
Bare Board Size	50 (H) × 29 (W) × 15 (H) mm
Weight	15 g ± 2 g
Power Supply	DC 5 V ~ 27 V
Communication Distance	Depends on optical terminal transmission distance and fiber attenuation
Supported Crossover Protocols	SBUS or CRSF
Data Interface	SH1.0-4P
Optical Interface	Single-mode, Single-fiber FC (up to 40 km)
Indicator Lamps	PWR – Power Indicator SYC – Optical Sync Indicator

 

Mini B-Type Integrated Terminal

Item	Mini Optical Terminal B Type
Model	Optical Terminal B Type
Fuselage Size	65 (H) × 50 (W) × 15 (H) mm
Weight	48 g ± 2 g
Bare Board Weight	22 g ± 2 g
Power Supply	DC 5 V ~ 27 V
Communication Distance	Depends on transmission distance and fiber attenuation
Supported Crossover Protocols	SBUS or CRSF
Optical Interface	OPT / FC
Power Interface	DC IN / JR expansion port for remote controller power supply
Video Output Interface	Video / RCA
Data Interface	SBUS_RX / JR expansion port direct output
Indicator Lamps	PWR – Power Indicator SYC – Optical Sync Indicator Video – Video Output Indicator SDY – Wired Signal Indicator

 

Analog FPV Camera

Model	BS59KR	BS59KN	BS59KNIR	BE59KPIR	BF59KPIR	BE59KP	BF59KP
IR Cut Filter	Yes	Yes	No (IR-sensitive)	Yes	Yes	Yes	Yes
Image Sensor	Super Star- Level HD Sensor		Star- Level HD Sensor
Resolution	720P	1500 TVL	1500 TVL	1200 TVL
Aspect Ratio	16:9 & 4:3 (switchable)			16:9 & 4:3 (Optional)
WDR	Super WDR
Ultra-Low Illumination	0.00001 Lux			0.0001 Lux
FOV (Field of View)	120°		165°		145°	165°	145°
Day/Night Mode	Color / B&W / Auto / External Control
Video Output	AHD	CVBS
DNR	3DNR
Operating Temperature	-40°C ~ 65°C
Power Input	DC 4.5–27V
Power Consumption	1W			0.5W
Housing Material	Metal
Net Weight	9 g
Dimensions	19 × 19 × 27 mm			19 × 19 × 25 mm

 

■ Advantages of the Micro-Line Spool Series

• ⭐ Featherweight & Flight-Endurance
  Designed to cut down on the load for extended flying.

• ⭐ HD Stable Un-Jammable Optical Connection
  Optical tethering to avoid jamming, no EMI effects.

• ⭐ Versatile
  Great for UAV surveillance missions and robotics in industrial inspections.

• ⭐ Customizable Materials
  Choose beside Resin for weight advantage or Kevlar for interference resistance.

• ⭐ Replacement-Friendly
  It’s an external Spool: reversibly constructs with ease.

• ⭐ OEM Customization Available
  Cable type, spool color, housing, connector, custom printing for branding.

■ Ideal Applications

• FPV HD

• UAV Security and Patrol

• Industrial Inspection Robots (Pipe, Tunnel, Building Inspection)

• Emergency Modems

• High EMI Environment

• Long-Distance Equipment Data Acquisition

Contact us for more information