BETAFPV ELRS Nano Receiver 2.4GHz
Series: BETAFPV Control links for drones (radio control link)
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The BETAFPV ELRS Nano Receiver 2.4GHz is a very small ExpressLRS receiver for 2.4 GHz with a U.FL antenna connector, built for small FPV drones. ExpressLRS is an open protocol, and BETAFPV appears here as the hardware vendor. The receiver sits in the drone and talks to an ExpressLRS transmitter module in the radio; both must use the same protocol and the same band.
The receiver weighs 0.7 g without the antenna. It sends telemetry at 20 dBm, which is 100 mW; over this return channel it reports signal strength and battery voltage to the radio. The packet rate determines how often control commands are sent: at 50 Hz there are 20 ms between two packets, at 150 Hz 6.67 ms, at 250 Hz 4 ms, at 500 Hz 2 ms and in F1000 mode 1 ms. This packet interval is not end-to-end latency, but it shows why high packet rates shorten reaction time and low ones increase range.
In the EU the limit in the 2.4 GHz band without a licence is 100 mW EIRP; the 100 mW of telemetry sits exactly at that limit, and antenna gain counts too. Equipment may be operated in the EU only in the approved frequency ranges and power levels. In the open category visual line of sight applies, and long ranges are no selection criterion there.
When choosing, the ExpressLRS version of the receiver has to match that of the transmitter module, otherwise binding fails. The antenna on the U.FL connector is a typical weak point in crashes; it should be routed in the right orientation and secured against pull. At 0.7 g the solder pads and connecting wires are the delicate spots.
Technical data
Other data
| Frequency | 2.4 GHzcorrect |
|---|---|
| Protocol | ExpressLRScorrect |
| Transmit power (mW) | 100correct |
| Weight (g) | 0.7correct |
What to check before buying
- Check the hour meter against the service records — a replaced instrument is the most common gap.
- Compare the data plate and chassis number with the papers.
- Ask about parts availability for this build year — the running costs hang on it.
A general list for this type of machine — no substitute for an inspection or an appraiser.
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