Long Range FPV Antenna Guide: 868 MHz vs 2.4 GHz
CSKYUAV is a China-based FPV drone parts manufacturer with 10+ years of experience, supplying factory-direct antennas, video transmitters, receivers and gimbals for racing, freestyle and long-range drones. For any long-range FPV build, the antenna does more to decide your real-world range than almost any other component: the same 1 W module can hold a solid link at 500 m with a poor antenna or at several kilometres with a well-chosen one. In short, choose an antenna that matches your frequency band (868/915 MHz for control links, 2.4 GHz or 5.8 GHz for video), offers enough gain for your target distance, and uses the correct connector — that combination is what turns a marginal link into a dependable one.
What Actually Limits FPV Range?
Radio range is set by a handful of factors: transmitter power, receiver sensitivity, antenna gain on both ends, and the environment between them. Free-space path loss increases with distance and with frequency, so a 2.4 GHz link naturally attenuates more than a sub-GHz link over the same distance. Obstacles matter even more — trees, terrain and buildings absorb and scatter signals, which is why sub-GHz bands dominate long-range control links.
Gain is the lever you control most easily. Every extra 3 dBi of antenna gain roughly doubles the effective radiated power, and gain on the ground side costs nothing in flight time. That is why a directional antenna on your controller or ground station often gives a bigger range jump than raising transmit power.
868 MHz, 915 MHz or 2.4 GHz: Which Band for Long Range?
For control links, sub-GHz systems — Crossfire, TBS, R9M and ExpressLRS 900 MHz — use the 868 MHz band in Europe and the 915 MHz band in North America. The longer wavelength penetrates foliage and terrain noticeably better, which is why serious long-range pilots fly control on sub-GHz and reserve 2.4 GHz for short and medium range.
Region matters: 868 MHz is the licence-exempt short-range device band in the EU (863–870 MHz) and is also permitted for SRD use in Russia, while 915 MHz is the FCC allocation for the USA and Canada. A dual-band 868/915 MHz antenna covers both worlds, which is exactly what the CSKYUAV Bandit 915/868 MHz antennas are designed for. 2.4 GHz remains the choice for ExpressLRS 2.4 GHz modules, where antenna size can be much smaller and the ecosystem is densest — but expect more signal loss in cluttered environments.
Omnidirectional vs Directional Antennas: What Goes Where
Antenna patterns fall into two practical camps. Omnidirectional antennas such as a T or whip design radiate in a donut around the antenna, cover all directions, and are the standard choice for the drone itself. Directional antennas focus energy into a beam, trade coverage for gain, and belong on the ground side where you can point them at the aircraft.
| Antenna type | Typical gain | Radiation pattern | Best use |
|---|---|---|---|
| T / whip (omni) | 1–3 dBi | 360° | On-drone and handheld controllers |
| Moxon | 5–6 dBi | Directional, tight beam | Ground stations, fixed-wing long range |
| Patch | 6–9 dBi | Directional, flat panel | Goggles and VRX video links |
| Yagi / panel | 10+ dBi | Highly directional | Fixed ground stations, maximum range |
A common mistake is putting a high-gain directional antenna on the drone. The aircraft constantly changes orientation, so a beam antenna on the airframe can point away from the pilot and actually shorten the link. Keep the drone on an omnidirectional antenna and concentrate gain on the ground side.
Why a Moxon Antenna Is a Smart Long-Range Choice
The Moxon is a two-element directional antenna that packs roughly 5–6 dBi of forward gain into a footprint barely larger than a T antenna, with a strong front-to-back ratio that rejects signals coming from behind. Because it is shorter than a full Yagi and does not need a ground plane, it mounts easily on a controller, a tripod or a fixed-wing fuselage.
For 868/915 MHz control links, the Bandit 915/868 MHz Moxon Antenna is a practical upgrade over the stock whip that ships with most modules: it lifts gain by several dBi without changing your radio. If you prefer the simplicity of an omnidirectional antenna for a handheld controller, the Bandit 915/868 MHz T Antenna keeps the same dual-band 868/915 coverage. For ExpressLRS and other 2.4 GHz systems, the 2.4 GHz Moxon Directional Antenna brings the same directional advantage to the shorter band, and the Dual Band 2.4 GHz / Sub-G 900 MHz Antenna covers both bands in one element for multi-band setups.
Connectors, Polarization and Mounting
Before buying, match the connector. Sub-GHz modules and receivers commonly use SMA or RP-SMA, while small video transmitters use u.FL/IPEX and need a pigtail. All FPV antennas are 50-ohm, and every adapter you add introduces a small loss, so prefer a direct fit over a chain of adapters.
Polarization must agree between the two ends. Most long-range control modules use linear polarization, so both antennas should be linear (all the CSKYUAV Moxon and T antennas are). Video systems often use RHCP on 5.8 GHz; if your goggles and VTX are RHCP, keep both sides RHCP. Finally, mount the antenna high and clear of the carbon frame and battery, because carbon fibre acts as an RF shield — a few centimetres of clearance can change the link noticeably.
How to Match an Antenna to Your Setup
- Identify the band of your control module — 868/915 MHz sub-GHz or 2.4 GHz.
- Decide the pattern: omnidirectional for a handheld controller, directional Moxon for a ground station or fixed-wing.
- Pick gain for your target range — for links beyond a few kilometres on sub-GHz, choose 5 dBi or more on the ground side.
- Confirm the connector (SMA, RP-SMA or u.FL) matches both the module and the antenna.
- Keep the same polarization on both ends of the link.
- Test with the RSSI or link-quality readout and watch how it changes as you point the antenna.
If you are comparing sub-GHz receivers, our earlier guide on ExpressLRS 915 MHz vs 2.4 GHz explains the module side of the same decision. You can browse the whole range of control and video link antennas in the FPV Antenna category.
Frequently Asked Questions
Can I use a 915 MHz antenna in Europe?
The Bandit Moxon and T antennas are dual-band 868/915 MHz, so the same antenna works in the EU 868 MHz allocation, the US 915 MHz band, and the 868 MHz SRD allocation used in Russia. Always confirm the output power allowed by your local regulations.
What real range does a Moxon antenna give?
Range depends on power, receiver sensitivity and terrain. In practice, a 1 W sub-GHz module with a 5–6 dBi Moxon on the ground typically holds a control link for several kilometres in open country, and often noticeably further on a fixed-wing in line of sight.
Should I put a directional antenna on the drone?
No. An omnidirectional antenna is the standard for the airframe because the aircraft changes orientation continuously. Put the directional gain on the controller or ground station and keep the drone side omnidirectional.
Can one antenna cover 868 MHz and 915 MHz?
Yes, if it is designed as a dual-band element. The Bandit antennas cover both allocations, and the Dual Band 2.4 GHz / Sub-G 900 MHz antenna adds 2.4 GHz coverage for mixed setups.
Will a 2.4 GHz antenna work on a 5.8 GHz video transmitter?
No. The antenna is tuned to a specific band, and using the wrong frequency produces high VSWR and a badly degraded link. Always match the antenna band to the transmitter band.
Do you offer antennas with custom branding for distributors?
Yes. As a factory-direct manufacturer, CSKYUAV supports ODM/OEM on antennas and other FPV parts, including custom branding, packaging and specification adjustments. Contact our sales team with your quantity to get a tailored quote.
Summary
A long-range FPV antenna choice comes down to three decisions: match the band (868/915 MHz for control, 2.4 or 5.8 GHz for video), put an omnidirectional antenna on the drone and directional gain on the ground, and check connectors and polarization before you buy. Done correctly, a dual-band Moxon such as the Bandit 915/868 MHz Moxon Antenna can extend a sub-GHz link by kilometres for the price of a few grams of extra gain. For volume orders, custom packaging or OEM projects, CSKYUAV ships factory-direct worldwide with full technical support.