The ChDB RX receiver dipole antenna is a receiving dipole antenna manufactured by ChDB (CherkasyDroneBud) for ELRS onboard receivers, specifically RX 370–550 MIL ELRS and other ChDB modules with IPEX connectors. It provides guaranteed communication up to 20 km due to precise factory resonance for the selected frequency.
The antenna is easy to install — it fits most ELRS receivers with an IPEX connector. It features 2.15 dBi gain, linear polarization, 50 Ohm impedance, and VSWR < 1.5 in a 20–30 MHz band around the tuned frequency.
The operating range is selected to match your radio link — the ChDB catalog offers dozens of factory options in the approximate 360–560 MHz band (and some individual items up to 750 MHz). On the product page, specify the required sub-band in the characteristics.
Key Features
- Type: dipole, receiving antenna for RX ELRS.
- Omnidirectional pattern — stable reception during UAV maneuvers.
- Gain 2.15 dBi, impedance 50 Ohm.
- Polarization: linear.
- IPEX connector — compatible with ChDB receivers and most ELRS RX.
- Bandwidth with VSWR < 1.5: 20–30 MHz (within the selected option).
- Range up to 20 km (guaranteed with precise frequency selection and TX matching).
Key Advantages
- Perfect frequency resonance: factory tuning for the selected sub-band.
- Guaranteed range up to 20 km with correct selection of option and TX antenna.
- Easy installation: connects to most ELRS receivers with IPEX.
- Low VSWR in the operating band — minimal onboard losses.
- ChDB's own production: compatible with RX 370–550, RX Mk4 and MIL ELRS kits.
- Wide range of frequencies for various tactical Sub-GHz sub-bands.
Applications
- Onboard RX ELRS receiver for FPV and reconnaissance UAVs.
- RX + dipole kits and retrofitting RX 370–550 MIL ELRS .
- Ground and aerial platforms with MIL ELRS radio link (ChDB).
- Replacement of the standard antenna when changing the RX module frequency.
- Missions where reception range and low onboard VSWR are critical.
Available Frequency Options (ChDB Catalog)
Choose an option to match your RX and TX settings. Specify the exact sub-band in the product card characteristics.
| Range, MHz |
| 360–380 |
| 370–390 |
| 380–400 |
| 410–430 |
| 420–450 |
| 455–475 |
| 465–485 |
| 475–495 |
| 490–510 |
| 500–520 |
| 540–560 |
Individual items are also available at typical frequencies (tuning center): 370, 380, 390, 420, 433, 465, 475, 485, 500, 510, 550, 750 MHz — check with the supplier for available options.
Package Contents
- ChDB RX receiver dipole antenna (option for the selected frequency).
Technical Specifications (common for all variants)
| Parameter | Value |
| Product type | Receiving antenna (dipole) for RX ELRS |
| SKU (base) | 734 |
| Brand | ChDB (Ukraine, own production) |
| Purpose | ELRS RX receivers (ChDB and compatible) |
| Frequency range | Selectable (see options table; 360–560 MHz and others) |
| Bandwidth (VSWR < 1.5) | 20–30 MHz |
| Gain | 2.15 dBi |
| Polarization | Linear |
| Impedance | 50 Ohm |
| Connector | IPEX |
| Communication range | Up to 20 km (guaranteed with precise tuning) |
Operating Warnings
- Choose the antenna option strictly for your RX and TX frequency — an unsuitable sub-band increases VSWR and reduces range.
- Do not bend or damage the cable near the IPEX output.
- For kits with frame mounting, see RX + dipole + mount options in the ChDB catalog.
- 20 km range is achieved with proper alignment of the entire link (TX, antennas, power, terrain, EW).
- Secure the antenna onboard to avoid propeller strikes and feeder tension.
The ChDB RX dipole antenna is a versatile solution for onboard ELRS reception: precise frequency resonance, 2.15 dBi gain, and guaranteed communication up to 20 km with correct option selection.
Other products in this category can be found in the Military Dipole Antennas section.
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