PRODUCT DETAILS
Optimized Product Description
Ultra-Wideband, Ultra-Precise: The Ultimate 4.3-7.8GHz Circular Polarization Antenna for Demanding FPV Pilots
In the world of long-range FPV and digital video transmission, signal stability is everything. Multipath interference, dynamic aircraft attitudes, and environmental obstacles can turn a perfect flight into a pixelated nightmare. The ACASOM 4.3-7.8GHz 20dBi RHCP High-Gain Antenna is engineered to solve these challenges. Featuring right-hand circular polarization (RHCP), an ultra-wide 44% relative bandwidth, and a commanding 20dBi of gain, this antenna delivers exceptional signal purity, multipath rejection, and extended range for the most demanding FPV, racing, and professional drone applications.
Whether you're flying digital FPV systems, building a high-performance ground station, or seeking the ultimate video link for your long-range rig, this antenna provides the spatial filtering and link margin you need to keep your feed crystal-clear—no matter the attitude or environment.
Why This RHCP Antenna is the Ultimate Choice for 4.3-7.8GHz Systems:
Ultra-Wideband 4.3-7.8GHz Coverage: Seamlessly covers 4300-7800MHz with a massive 44% relative bandwidth—compatible with 5.8GHz FPV, 5.3-5.9GHz digital systems, 6GHz experimental bands, and emerging 7GHz applications. One antenna for all your gear.
20dBi High Gain for Extreme Range: Delivers a powerful 20dBi of gain, dramatically extending your video transmission range and providing superior link margin for long-range exploration and BVLOS operations.
Right-Hand Circular Polarization (RHCP): The circular polarization design effectively mitigates multipath interference caused by reflections from buildings, terrain, and water. It also ensures stable signal transmission under dynamic attitude changes between your drone and ground station—no more signal dropouts during aggressive maneuvers.
Exceptional Spatial Filtering: Features 24° half-power beamwidth (HPBW) in both elevation and azimuth, providing focused, directional coverage with excellent rejection of off-axis interference.
Superior Signal Purity: Maintains VSWR < 1.5 and ≥90% radiation efficiency across the entire band, ensuring every watt of your VTX power is converted into effective, clean signal transmission.
Precision Engineering & Durability: Built with a compact 210x210x15mm form factor, weighing just 230g. The robust construction is designed for ground station tripods, vehicle mounts, and fixed installations.
Technical Specifications:
| Parameter | Specification |
|---|---|
| Frequency Range | 4300 – 7800 MHz (4.3-7.8 GHz) |
| Peak Gain | 20 dBi |
| VSWR | < 1.5 |
| Radiation Efficiency | ≥ 90% |
| Polarization | Right-Hand Circular Polarization (RHCP) |
| Half-Power Beamwidth (EL) | 24° |
| Half-Power Beamwidth (AZ) | 24° |
| Front-to-Back Ratio | > 15 dB (typical) |
| Input Impedance | 50 Ω |
| Power Handling | 30 W |
| Connector | SMA-Male |
| Dimensions | 210 x 210 x 15 mm |
| Weight | 230 g |
Performance Characteristics:
| Frequency (MHz) | Typical Gain (dBi) | VSWR |
|---|---|---|
| 4300 | ~18.5 | < 1.5 |
| 4900 | ~19.2 | < 1.4 |
| 5500 (5.8GHz FPV) | ~20.0 | < 1.3 |
| 6100 | ~20.0 | < 1.3 |
| 6700 | ~19.5 | < 1.4 |
| 7800 | ~18.8 | < 1.5 |
Ideal For:
Digital FPV Systems (DJI, Walksnail, HDZero): Maximize video range and clarity with optimal circular polarization matching
Long-Range Analog FPV: Push 5.8GHz video links to their absolute limits with 20dBi of focused gain
FPV Racing Drones: Maintain stable video during high-speed turns and aggressive maneuvers with multipath-rejecting RHCP
Ground Station & Receiver Modules: The perfect directional antenna for tripod-mounted diversity systems and automated trackers
6GHz & 7GHz Experimental FPV: Future-proof your setup with ultra-wideband coverage for emerging frequency bands
Drone Telemetry & Control: Enhance 5.8GHz data links for professional UAV operations
Package Includes:
1 x 4.3-7.8GHz 20dBi RHCP High-Gain Antenna
Mounting hardware (varies by configuration—please verify in product images)
Critical Usage Notes:
Polarization Matching: For optimal performance, ensure your transmitting antenna also uses RHCP. Mixed polarization (RHCP with LHCP) will result in significant signal loss.
Precision Aiming Required: With a 24° beamwidth, this antenna requires accurate alignment with your drone for maximum gain. Ideal for use with antenna trackers or for fixed flight paths.
Connection Sequence: Always connect the antenna to your receiver or transmitter before powering on RF equipment to prevent damage.
Mounting Stability: Use a sturdy tripod or mounting bracket to maintain precise aim, especially in windy conditions.
Why Choose ACASOM?
Ultra-Wideband Performance: 44% relative bandwidth covers 4.3-7.8GHz with one antenna
Circular Polarization Excellence: Superior multipath rejection and dynamic attitude stability
High-Efficiency Design: ≥90% efficiency ensures maximum power transfer
Field-Proven Reliability: Built for professional FPV and UAV applications
Ready to Experience Crystal-Clear, Long-Range FPV Video?
Stop fighting multipath interference and weak signals. The ACASOM 4.3-7.8GHz 20dBi RHCP High-Gain Antenna delivers the focused, clean signal you need for confident long-range flights. Click 'Add to Cart' now and elevate your FPV experience!
4.3-7.8GHz 20dBi RHCP High-Gain Antenna | Ultra-Wideband Circular Polarization for FPV Drone, Digital FPV Systems & Ground Stations | 90% Efficiency, SMA-Male
SHIPPING
When we receive your order, we will ship the goods within 2-3 business days. And inform you of the tracking number of the package by email.
Standard Shipping: The package will be shipped using the Postal Office System and is expected to be delivered within 15-25 days.
Express Shipping: DHL/UPS/Fedex. It is expected to arrive within 5-7 working days.
Orders shipped via UPS or FedEx are charged based on the current carriers' rates. Multiple item orders may ship from different locations. In this case, you will receive a separate email confirmation for each shipment.
$8.99 flat rate shipping is available through UPS Ground shipping only. In order to qualify, package must weigh under 20 lbs. If above 20 lbs., standard ground rates apply.
DELIVERY AND TITLE
a) Unless otherwise agreed to in writing, all products are shipped Incoterms 2010 - FCA Shipping Point. Subject to seller's right of stoppage in transit, delivery of the products to the carrier will constitute delivery to buyer and title and risk of loss will pass to the buyer.
b) Seller will make reasonable efforts to initiate shipment and schedule delivery as close as possible to the buyer's requested delivery date(s). Buyer acknowledges that delivery dates provided by the seller are estimates only and that seller will not be liable for failure to deliver on such dates.
c) Selection of the carrier and delivery route will be made by the seller unless specifically designated by the buyer.
d) Seller reserves the right to make deliveries in installments. Delay in delivery of one installment will not entitle the buyer to cancel any other installment(s). Delivery of any installment of products within thirty (30) days after the date requested will constitute a timely delivery. Delivery of a quantity that varies from the quantity specified shall not relieve the buyer of the obligation to accept delivery and pay for the products delivered.
e) Deliveries shall be made during normal business hours Monday through Friday. One attempt to deliver will be made. Should delivery need to be rescheduled, any additional costs incurred for redelivery and/or storage fees will be charged to the buyer. Seller shall use reasonable efforts to make timely delivery but shall be excused from any delays arising out of causes beyond its reasonable control. Any specific delivery dates that may be stated are approximate.