Drone Repeater Kit

The Shpak Drone Repeater Kit (DRK) is an airborne retransmission system that overcomes the radio horizon – the fundamental limit of every ground-based antenna. By elevating the FPV control and video link above terrain obstacles, the DRK extends FPV operations across forests, hills, urban structures, and fortified positions and improves signal reliability in EW-contested environment.

Terrain Independence

TERRAIN INDEPENDENCE

Bypasses forests, hills, urban clutter, trenches, and fortifications.

Extended Range

EXTENDED RANGE

Stable control and video transmission up to 25 km in mixed terrain.

Resistance to electronic warfare

EW RESILIENCE

Elevated link reduces exposure to low-mounted jammers and terrain-induced interference.

operator-safety

OPERATOR SAFETY

Concealed operation from bunkers, dugouts, treelines, or covered positions.

Tested

FIELD-SERVICEABLE

Full modular replacement of VRX, VTX, control TX, antennas, and battery – five minutes, no tools.

Battle-Tested

MISSION READY - OPERATION PROVEN

In active combat use with Ukrainian units. In service with the Lithuanian Armed Forces.

Built for the Shpak Ecosystem

The DRK is engineered as the native communication backbone for the Shpak FPV drone family. The RTK mounts on a separate drone carrier capable of lifting an 800-gram payload, positioning itself between the operator’s MAR on the ground and the Shpak drone in flight. The DRK’s modular transmitter architecture and broad frequency range also support compatibility with third-party FPV drones.

Drone Repeater Kit (DRK)

OPERATOR TEAM

FPV drone pilot

and navigator

UTP Cable

UTP CABLE

Connection

between MAR and

the Operator team

Operator Team

MINI ANTENNA RACK (MAR)

Compact ground

interface that pairs

with the Repeater

Technician

TECHNICIAN

Sets up DRK and

operates Repeater

carrier drone

Mini Antenna Rack

REPEATER UNIT (RTK)

Mountable,

carrier-agnostic antenna

Repeater Unit RTK

FPV DRONE SHPAK

Operator Team

OPERATOR TEAM

FPV drone pilot

and navigator

UTP Cable

UTP CABLE

Connection

between MAR and

the Operator team

Technician

TECHNICIAN

Sets up DRK and

operates Repeater

carrier drone

Mini Antenna Rack

Drone Repeater Kit (DRK)

MINI ANTENNA RACK (MAR)

Compact ground interface

that pairs with the Repeater

Repeater Unit RTK

REPEATER UNIT (RTK)

Mountable, carrier-agnostic

antenna

FPV DRONE SHPAK

Two Components, One Virtual Mast

The DRK consists of a Repeater Unit (RTK) mounted on a carrier drone, and a Mini Antenna Rack (MAR) operating from the ground. Together they form a deployable virtual mast – positionable anywhere, mountable on any compatible carrier.

REPEATER UNIT (RTK)

A lightweight, swappable-module airborne payload providing high-elevation, low-latency relay for both video and control channels.

MINI ANTENNA RACK (MAR)

A compact, rugged, weatherproof ground interface designed to remain deployed and unattended between missions.

SPECIFICATIONS

Weight
804 g
Dimensions (without antennas)
250 × 68 × 65 mm
Dimensions (with LPDA and helical antennas)
490 × 307 × 170 mm
Modularity
Fully modular video VRX/VTX configuration, control TX/RX, antennas
Operating Temperature
-20 °C to +40 °C
Battery
Swappable; 40–60 min per battery; percentage indicator (8 battery discharge levels indicated). Two sets included
Mounting
Universal mount for Matrice, Autel, and FPV carriers
Video Input (Ground → Repeater)
1.2 GHz analog with video scrambling or digital
Video Output (Repeater → Shpak)
4.9–5.8 GHz
Control Antennas
RSI log periodic dipole array antenna; 50–60° beam; swappable for narrow / ultra-narrow beam antennas
Control Frequencies
RSI ELRS FHSS across 3 non-standard frequency bands
Video Antennas
Patch / helical; 30–40° beam; swappable
Range
25 km control + video
In-Air Channel Switching
Backpack-supported, from RC controller
User Interface
Wi-Fi bind button, reset button, status LEDs
Construction
SLS-printed structural pieces where possible
Transport
Hard case, shared with MAR
Design
Compact, rugged, rainproof
Dimensions
214 x 172 x 98 mm
Operating Temperature
–20 °C to +40 °C
Weather Protection
IP65 (UTP), IP67 (BOX)
Drop Resistance
26 × 1.2 m drops, MIL-STD-810H Method 516.8 (Shock)
Cable
50 m CAT6 UTP, weatherproof connectors
Modularity
Swappable VRX, TX, antennas
Coverage
Omnidirectional; 1 km ground-to-repeater radius
Mounting
Picatinny rail, tripod, vehicle mount, mast-compatible
Channel Switching (RC handset)
Repeater → FPV drone VTX/VRX channel, VTX power
Manual Switching
MAR → RTK VTX/VRX channel, VTX power
Transport
Shared transport case with RTK

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