The ChDB TX+RX 150 MHz radio control system (000042) is a kit for remote control of UAVs and UGVs in the enhanced 150–153 MHz band using the MIL ELRS protocol. The TX + telescopic TX + RX + telescopic RX configuration is the most compact option: telescopic dipole antennas on the transmitter and receiver for quick deployment without a bulky Yagi.
The maximum reported range for this product line is up to 43 km (reconnaissance aircraft, with a Yagi antenna on the TX; according to the manufacturer). This configuration emphasizes control point mobility and ease of drone mounting. The transmitter output power is 0.9–1.2 W, with a Backpack function for switching video channels from the remote control. Manufacturer: ChDB (Cherkasydronbud), Ukraine.
The kit includes the TX V3.3 150 MIL ELRS transmitter, the RX Mk4 150 MIL ELRS receiver, a TX 150 telescopic transmitter antenna (2 dBi, SMA), a RX 150 telescopic receiver antenna with frame mount (extended 96.5 cm), heat shrink tubing, and soldering wires.
Key Features
- Radio control of UAVs and UGVs at 150 MHz, MIL ELRS protocol.
- Enhanced 150–153 MHz band, FHSS on the receiver.
- Backpack — video channel switching from the remote control.
- Telescopic TX antenna: 2 dBi, 50 Ohm, VSWR < 1.5, ~10 MHz bandwidth, SMA connector.
- Telescopic RX antenna with mount; extended length 96.5 cm.
- TX firmware update via Wi‑Fi.
Key Advantages
- Compactness: no need for a disassemblable 104×108 cm Yagi — convenient for mobile crews and confined spaces.
- Quick deployment: telescopic antennas on TX and RX deploy in minutes.
- Sub-GHz 150 MHz: more stable control channel compared to 2.4 GHz in EW zones.
- Minimal drone mounting: RX soldering, mount, antenna deployment.
- ChDB modules: TX V3.3 + RX Mk4, proprietary MIL ELRS firmware.
- Transport: folded telescopic antennas take up minimal space in the case.
Areas of Application
- FPV and UAVs where quick flight preparation is essential.
- Unmanned Ground Vehicles (UGVs) in field conditions.
- Mobile control points without a stationary large antenna.
- Reconnaissance and strike missions at 150 MHz as part of a crew.
- Crews with limited space in transport and at the position.
Configuration (TX + telescopic TX + RX + telescopic RX)
- ChDB Transmitter TX V3.3 150 MIL ELRS (Backpack).
- ChDB Receiver RX Mk4 150 MIL ELRS.
- Transmitter antenna telescopic dipole TX 150 (2 dBi, SMA).
- Receiver antenna telescopic dipole RX 150 with plastic frame mount.
- Heat shrink tubing, soldering wires.
Technical Specifications
| Parameter | Value |
| Product type | UAV/UGV radio control system (TX+RX kit) |
| Configuration | TX + telescopic TX + RX + telescopic RX |
| SKU | 000042 |
| Brand | ChDB (Ukraine, in-house production) |
| Enhanced frequency range | 150–153 MHz |
| TX output power | 0.9–1.2 W |
| Firmware | MIL ELRS |
| Functions | Backpack (video channel switching); FHSS (RX) |
| Max. reported range (product line) | Up to 43 km with Yagi on TX (reconnaissance aircraft); telescopic TX — shorter range, higher mobility |
| Transmitter TX V3.3 150 | Power DC 6.5–24 V (XT30); SMA antenna; Wi‑Fi; passive cooling |
| Receiver RX Mk4 150 | Power 5 V; IPEX 1; 20×30×6 mm; FHSS |
| TX telescopic antenna 150 | Dipole; 2 dBi; 50 Ohm; VSWR < 1.5; bandwidth ~10 MHz; SMA; foldable design |
| RX telescopic antenna 150 | 150 MHz; dipole; 96.5 cm extended; IPEX; UAV frame mount |
| Communication protocol | MIL ELRS (CRSF) |
Operation Warnings
- Extend TX and RX telescopic antennas fully before operation; damaged sections reduce range.
- For maximum range, the manufacturer recommends kits with a Yagi antenna on the transmitter; telescopic TX is for mobile scenarios.
- Adhere to TX power supply 6.5–24 V.
- Check TX/RX binding and Backpack before flight.
- Protect the IPEX cable between RX and antenna; use the included mount.
The ChDB TX+RX 150 MHz system (TX + telescopic TX + RX + telescopic RX configuration) is a mobile MIL ELRS 150 MHz kit without a bulky Yagi: an optimal choice when quick deployment, compact transport, and simple onboard mounting are important.
For other products in this category, see the Ground Stations and Repeaters for FPV Drones section.
No questions about this product, be the first and ask your question.
