ExpressLRS vs TBS Crossfire: FPV Radio Pick
The two competing radio protocols for serious FPV in 2026 are ExpressLRS (open-source, free firmware, 2.4 GHz or 900 MHz) and TBS Crossfire (proprietary, 868/915 MHz). ELRS now dominates new builds; Crossfire retains a strong installed base. This guide explains when each makes sense and what to buy.
What You Need
ExpressLRS — what it is and why it won
ExpressLRS launched in 2020 as an open-source RC protocol designed to deliver TBS Crossfire-class performance at TBS Crossfire-class range, but completely free. The firmware runs on cheap commodity Semtech LoRa radio chips (SX1280 for 2.4 GHz, SX1276 for 900 MHz) — receivers cost $20-30 vs $50-130 for Crossfire receivers. Latency is industry-best: sub-millisecond at 1000 Hz packet rate, 1.5-5ms at typical 250-500 Hz rates.
ELRS in 2026 is the dominant new-build protocol — every modern FPV radio (RadioMaster Pocket, Boxer, TX16S Mark II, BetaFPV LiteRadio 3) ships with ELRS internal modules. Open-source community develops the firmware on GitHub with active community maintainers. Range matches Crossfire in clean RF environments (~30+ km with appropriate antennas on 915 MHz). Free, fast, open, cheap receivers — the combination has fundamentally changed FPV radio.
TBS Crossfire — what it is and why it persists
TBS Crossfire (Team BlackSheep) launched in 2016 as the premium RC link protocol — 868/915 MHz LoRa-based with industry-best range and reliability. Single-vendor closed-source (TBS owns the firmware). Receivers cost $50-130 each. Crossfire was the gold standard for long-range FPV from 2017-2022 before ELRS emerged.
Crossfire persists because of installed-base inertia. Pilots who built fleets of Crossfire receivers in 2020-2022 have $500-2000 invested in Crossfire RXs across multiple quads. Switching all those to ELRS means buying new receivers for every quad. Crossfire also has the most polished UI / firmware experience — TBS controls the entire pipeline (transmitter module, receivers, firmware), resulting in a more refined out-of-box experience than ELRS's distributed community development. For pilots with Crossfire fleets, the cost of switching is real.
Step-by-Step Instructions
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Step 1 Decide based on installed base
If you already own Crossfire receivers (in current quads): stick with Crossfire. Buying ELRS means re-equipping every quad with new $20-30 receivers — easy to spend $200+ if you have 5+ active quads. Stay on Crossfire until natural replacement cycles thin the fleet.
If you're starting fresh in 2026: buy ELRS. The RadioMaster Pocket ($80) or Boxer ($150) ship with internal ELRS 2.4 GHz at 250 mW. Receivers at $20-30 each. Performance matches or beats Crossfire. Open-source firmware means you'll never lose your investment to vendor exit or firmware abandonment. For new pilots ELRS is the obvious answer.
Tip: Many serious pilots maintain both protocols — Crossfire for long-range / legacy quads, ELRS for new builds. The RadioMaster Boxer supports both via its JR external module bay (internal ELRS 2.4 GHz + external Crossfire 868 MHz module). -
Step 2 Choose 2.4 GHz vs 900 MHz
ELRS 2.4 GHz: shorter range (~15-20 km practical line-of-sight), more channels available, less RF congestion in many areas. ELRS 915 MHz: longer range (~30+ km practical), penetrates RF-congested race venues better, fewer channels but cleaner spectrum at race meets. Crossfire is 868/915 MHz only.
For racing and freestyle line-of-sight flying (under 5 km): 2.4 GHz is fine. For long-range freestyle / exploration (10-30 km): 900 MHz wins. Most FPV pilots fly within 2-3 km line-of-sight where 2.4 GHz performance is identical to 900 MHz. Add a 900 MHz module only when you specifically need the range or the cleaner spectrum at organized race meets.
Tip: Buy the RadioMaster Pocket if you'll stick with 2.4 GHz (cheapest entry, internal module only). Buy the Boxer if you anticipate adding 900 MHz later (JR external module bay accepts ELRS 915 MHz or TBS Crossfire modules). -
Step 3 Pick a receiver
ExpressLRS 2.4 GHz: BetaFPV ELRS Lite ($15), HappyModel EP1 ($18), BetaFPV ELRS Nano ($20), HappyModel ES915TX module + ES915RX receiver ($45 for module + receiver). Diversity receivers (2 antennas, automatic selection) cost $25-35 — recommended for reliable signal in cluttered RF environments.
TBS Crossfire: TBS Crossfire Nano Diversity ($65), TBS Tracer Nano ($45). TBS Crossfire Lite ($60). All TBS receivers are diversity (2-antenna) by default. Crossfire Tracer is the 2.4 GHz variant (rare in FPV — most Crossfire is 868/915 MHz).
For a first build, the BetaFPV ELRS Lite ($15) or HappyModel EP1 ($18) is the right answer. Diversity receivers are nice but not necessary for typical line-of-sight flying. Bind in 30 seconds via the receiver's WiFi WebUI (ELRS) or by short-press of the bind button (Crossfire).
Tip: Buy receivers in bulk (3-5 at a time) — replacement after crashes is more common than you'd expect. ExpressLRS Lite at $15 is the cheapest way to maintain a spare-receiver fleet.
Frequently Asked Questions
Is ELRS really as good as Crossfire?
Yes in 2026. ELRS receivers match or beat Crossfire on latency, range, and reliability in independent tests. The remaining Crossfire advantages are firmware polish (TBS controls the entire pipeline) and broader retail availability in some regions. For raw performance, ELRS wins. For 'just works' UX, Crossfire is slightly ahead but the gap is closing each year.
Can I use both ELRS and Crossfire on the same radio?
Yes if your radio has a JR external module bay. RadioMaster Boxer / TX16S Mark II have internal ELRS 2.4 GHz + JR bay for external Crossfire (or ELRS 915 MHz) modules. Switch between protocols per model in EdgeTX. RadioMaster Pocket has internal-only — no external module bay, no Crossfire support.
What about FrSky and Spektrum?
Legacy. FrSky (R-XSR receivers, D8/D16 protocols on 2.4 GHz) and Spektrum (DSM2/DSMX) dominated FPV from 2014-2020. Both are now displaced by ELRS for new builds. Existing FrSky / Spektrum receivers still work but the ecosystems are not getting R&D investment. If you have legacy FrSky receivers, use them until they fail, then replace with ELRS.
How much TX power do I really need?
For typical line-of-sight FPV (2-3 km): 100 mW is plenty. For longer range (5-10 km): 250 mW (the max of most internal ELRS modules). For 10-30 km long-range: 1W (requires external module — RadioMaster Boxer's JR bay accepts ELRS 915 MHz or Crossfire modules at 1W). Most pilots overstate the TX power they actually need. 100 mW is enough for 90% of FPV flying.
Are external modules worth the cost?
External Crossfire module: $130-200 plus $50-130 per receiver. ELRS 915 MHz external module: $40-80 plus $20-30 per receiver. The cost gap reflects Crossfire's TBS premium. For most pilots, the internal ELRS 2.4 GHz module covers all real-world use cases without needing external. Add external modules only when you specifically need 1W output or 900 MHz penetration.
Does the protocol matter for first FPV flights?
No — both ELRS and Crossfire feel identical in flight at typical range. Pick based on cost, future-proofing, and upgrade path. For new builds in 2026: ELRS. For existing Crossfire fleet: stay with Crossfire.