PickGuideAtomRC Dolphin Pro Review: 800mm FPV Fixed-Wing with DJI O3/O4 Pro at $99–$189
The AtomRC Dolphin Pro is built around a specific constraint most fixed-wing FPV pilots eventually hit: analog video isn't enough, but digital integration requires a platform designed for it. The Dolphin Pro accommodates DJI O3 and O4 Pro air units natively, pairs them with a 2807 1100KV motor on 6S for a 1.3–1.4 thrust-to-weight ratio, and fits it into an 800mm airframe with a movable V-tail and quick-release structure. At $99 for the KIT and $189 for the RTH build, it's a compact digital FPV wing with the power margin to handle payload and aggressive flight.
The AtomRC Dolphin Pro is an 800mm wingspan fixed-wing FPV aircraft designed for digital video system integration. Wingspan is 800mm, length 862mm, wing area 16.96dm². Motor is 2807 at 1100KV; ESC requirement is 6S capable, minimum 50A with BEC. Propeller is 8040-2. Battery format is 6S1P using 21700 cells. Thrust-to-weight ratio is 1.3–1.4; static pull force is 2081g. The airframe is compatible with DJI O3 and O4 Pro air units for digital HD video transmission. Key design features include a movable V-tail for authority in pitch and yaw, a quick-release structure for field assembly and transport, and integrated LED navigation lights. Available in Gray and White color variants. Three configurations: KIT at $99 (airframe), PNP+S at $129 (motor, ESC, servos, receiver), RTH at $189 (ready to fly with receiver). Available through atomrc.com.
Pros
- DJI O3 and O4 Pro compatible — native digital HD video integration without modification
- 2807 1100KV on 6S delivers 2081g pull force and 1.3–1.4 thrust-to-weight for agile performance
- Movable V-tail provides better pitch and yaw authority than fixed V-tail designs
- Quick-release structure enables fast field assembly and pack-down
- LED navigation lights included — visible orientation cues during low-light or long-range flight
- 16.96dm² wing area handles 6S power with appropriate lift
- 800mm compact format balances portability with wing efficiency
Cons
- 6S1P 21700 battery is a less common format — sourcing options are narrower than 4S LiPo
- Requires 6S ESC at 50A minimum with BEC — not compatible with standard 4S setups
- 800mm wingspan limits payload capacity compared to larger platforms like the Swordfish
- DJI O3/O4 Pro unit not included — additional $200+ cost to complete the digital FPV build
- No RTF version — even RTH configuration requires battery and transmitter to fly
Who It's For
Good For
- FPV pilots ready to upgrade to DJI digital HD video on a fixed-wing platform
- Compact builds where 800mm fits transport constraints better than 1200mm wings
- 6S builds where pilots have existing 21700 batteries or want high-voltage performance
- Pilots who need quick field setup — quick-release structure reduces assembly time
Skip If
- You use analog video and don't plan to upgrade to DJI O3/O4 Pro — the Swordfish offers more range at lower cost
- Your battery stock is 4S LiPo — the Dolphin Pro's 6S requirement means a different battery investment
- You need a large cargo platform or extended range — the 800mm format has limits the Swordfish doesn't
How It Compares: AtomRC Dolphin Pro FPV Plane vs AtomRC Swordfish Fixed-Wing FPV Plane
| Spec | AtomRC Dolphin Pro FPV Plane | AtomRC Swordfish Fixed-Wing FPV Plane |
|---|---|---|
| Price | $99–$189 | $85–$168 |
| Wingspan | 800mm | 1200mm |
| Motor | 2807, 1100KV | 2004~2306 |
| Battery | 6S1P 21700 | 4S 5000mAh |
| Digital FPV | DJI O3/O4 Pro Compatible | No (analog or 3rd party) |
| Tail | Movable V-Tail | Standard |
| Best for | Digital FPV, compact build, 6S power | Long range, INAV navigation, 4S efficiency |
The Dolphin Pro is the digital HD FPV wing at $99–$189 with DJI O3/O4 Pro support in an 800mm compact format. The Swordfish is the long-range cruiser at $85–$168 with INAV/Arduplane autonomous navigation in a 1200mm format.
See AtomRC Swordfish Fixed-Wing FPV Plane →
Verified Ratings
Key Specs
| Wingspan | 800mm |
| Length | 862mm |
| Wing Area | 16.96dm² |
| Motor | 2807, 1100KV |
| ESC | ≥6S, 50A, BEC |
| Propeller | 8040-2 |
| Battery | 6S1P 21700 |
| Thrust-to-Weight | 1.3–1.4 |
| Pull Force | 2081g |
| Digital FPV | DJI O3 / O4 Pro Compatible |
| Tail | Movable V-Tail |
| Structure | Quick-Release |
| Lights | LED Navigation Lights |
| Colors | Gray / White |
| Construction | EPP |
In The Box
- Dolphin Pro airframe (EPP)
- User manual
- KIT variant: airframe only; PNP+S: motor, ESC, servos, receiver; RTH: fully assembled
Frequently Asked Questions
Does the Dolphin Pro work with DJI O3 Air Unit?
Yes — the Dolphin Pro is designed with mounting provisions compatible with DJI O3 and O4 Pro air units. The airframe layout accommodates the unit without structural modification. The DJI unit itself is not included and must be purchased separately.
What battery does the Dolphin Pro use?
The Dolphin Pro uses a 6S1P battery built from 21700 cells. This is a higher-voltage, higher-energy-density format compared to standard 4S LiPo setups. The 6S voltage powers the 2807 1100KV motor to deliver the 2081g static pull force and 1.3–1.4 thrust-to-weight ratio.
What is the movable V-tail and why does it matter?
The Dolphin Pro uses a V-tail configuration where both tail surfaces move together as ruddervators — controlling pitch and yaw simultaneously. 'Movable' refers to the full range of servo-controlled deflection available on both surfaces. Compared to a fixed V-tail, this provides better control authority in both pitch and yaw axes, which matters for precise FPV flight and landing approaches.
What does the quick-release structure mean in practice?
The Dolphin Pro's quick-release joints allow the wings and possibly the tail section to detach without tools for transport and storage, then reattach securely at the field. This reduces pack size and assembly time significantly compared to fully fixed airframes, which matters for pilots transporting the aircraft to flying sites.
How does the Dolphin Pro compare to the Swordfish?
The Dolphin Pro is the compact 800mm digital FPV platform — DJI O3/O4 Pro compatible, 6S power, movable V-tail, at $99–$189. The Swordfish is the larger 1200mm long-range cruiser — INAV/Arduplane autonomous navigation focus, 4S 5000mAh, at $85–$168. Choose the Dolphin Pro for digital HD video and compact build; choose the Swordfish for maximum range and autonomous flight.
Verdict
The Dolphin Pro is AtomRC's answer for pilots who want digital HD FPV in a compact fixed-wing. DJI O3 and O4 Pro compatibility, a movable V-tail, and 2081g of static pull in an 800mm airframe make it a real upgrade platform — not just an analog wing with a mount point added. At $99 for the KIT and $189 for the RTH build, the price is competitive for what the airframe offers to the digital FPV fixed-wing market.