Fibre-optic FPV drone in an ambush: how it works and what the drone needs
09.11.2026
By Ptashka Drones Editorial Team
An FPV drone does not have to fly to the target straight away. It can land next to a road or another route and wait for a target to appear. This tactic is called an ambush, and such drones are nicknamed "waiters" (zhduny). Fibre-optic drones suit it best. We explain why, what a drone needs for an ambush and how to protect against enemy ambushes.
How an FPV drone ambush works
- Flight out. The operator flies the drone to a spot the target is likely to pass.
- Landing. The drone lands with its camera facing the route. It is hidden in grass, by trees or buildings.
- Waiting. The drone sits on the ground while the operator watches the picture. Unneeded systems are switched off to save power.
- Strike. When the target appears, the drone takes off and attacks within seconds.
Both sides actively use this tactic. In May 2025 the Ukrainian "Khyzhak" brigade showed its drones finding and destroying Russian fibre-optic FPV drones waiting on routes used by Ukrainian vehicles.
Why fibre optics is chosen for ambushes
| Radio drone | Fibre-optic drone | |
|---|---|---|
| Signal near the ground | Weakens: terrain, trees and buildings block line of sight | Stable, because it runs over a cable |
| EW | Can jam control and video | No effect on the cable |
| Signals intelligence | The video transmitter gives away the position | Does not emit on air |
| Limitations | Depends on signal strength and EW | Range set by the spool; the cable glints in the sun |
The key is the third row. A radio drone in an ambush transmits video all the time, and the enemy can detect it on air. A fibre-optic drone stays silent, so it has to be found visually or by other drones.
What a drone needs for an ambush
- Waiting mode. The drone must sit on the ground for a long time and take off as soon as the operator sees the target. Every Ptashka drone has a flight controller adapted for the "Zhdun" ambush mode: the drone waits for up to 5 hours.
- Legs. The drone must stand level on uneven ground, and the propellers must not touch grass on take-off.
- A camera for the time of day. A day camera is enough in daylight; at night you need a thermal one. Ptashka drones can carry both with switching. See day or thermal camera for FPV.
- Microphone. The digital version of Ptashka drones has a microphone. In an ambush it helps to hear vehicles before they are visible.
- Spare fibre and battery. Part of the fibre and charge goes on the flight to the ambush spot; the rest is for the strike.
Which Ptashka drones suit ambushes
Take-off and ambush legs come with three fibre-optic models: 13-O, 15-O and 17-O.
| Ptashka-13-O | Ptashka-15-O | Ptashka-17-O | |
|---|---|---|---|
| Range | 10, 15 or 20 km | 25, 30 or 35 km | 40 / 50 km |
| Payload | 3–3.5 kg | 1.5–3 kg | 2 / 1.5 kg |
| Propellers | 13″ | 15″ | 17″ |
| Frame | Carbon | ||
| Battery | 2 × 8s2p or 8s3p | 2 × 8s3p or 8s4p | 2 × 8s5p, 27,500 mAh |
| Camera | Caddx Ratel 2 day camera and/or 640×512 thermal. Digital version with microphone | ||
| Waiting time | Up to 5 hours, depending on temperature | ||
The Ptashka 13-O/15-O covers ambushes at up to 35 km and the Ptashka-17-O at up to 50 km. The lighter Ptashka-10-O also has ambush mode, but its kit has no legs.
Ambush limitations
- Spool. A drone in ambush has already used part of its fibre. If the target appears far from it, the fibre may run out.
- Battery. Ptashka drones wait for up to 5 hours, but in the cold the battery drains faster and the time shortens.
- Search. The enemy hunts for ambushes with reconnaissance drones. Fibre glinting in the sun or an uncamouflaged drone can give the position away.
How to protect against enemy ambushes
An enemy fibre-optic drone in ambush does not emit on air, so an RF detector will not notice it. A detector is useful against radio drones, but it will not protect against a "waiter" on a cable. Protection looks different here:
- scouting the route with your own drones before vehicles move;
- watching for fibre glinting on roads and verges;
- physical protection: nets on vehicles and tools such as net launchers if the drone is already airborne.
How detection and physical countermeasures complement each other is explained in RF detector, EW and physical protection against FPV.
Frequently asked questions
What is an FPV drone ambush?
An FPV drone lands near an enemy route and waits for a target. When the target appears, the drone takes off and attacks within seconds.
What is the "Zhdun" ambush mode?
A mode in which the drone sits on the ground in ambush and takes off as soon as the operator sees the target. Every Ptashka drone has a flight controller adapted for it.
Can an RF detector see a fibre-optic drone in ambush?
No. A fibre-optic drone does not transmit a radio signal, so an RF detector does not register it. Protection relies on route scouting and physical means.
Which Ptashka drones have ambush legs?
Ptashka-13-O, Ptashka-15-O and Ptashka-17-O. All three are fibre-optic, with take-off and ambush legs included.
How long can an FPV drone wait in ambush?
Ptashka drones with ambush mode wait for up to 5 hours. The exact time depends on temperature: in the cold the battery drains faster.
Looking for an ambush drone? Contact us and a Ptashka engineer will recommend the model, spool and camera for your task.
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