This Happymodel ExpressLRS (ELRS) Omnidirectional U.FL Antenna is for the EP1 RX 2.4GHz Nano series receiver. The EP1 RX has an open-source program based on ExpressLRS. Due to the low-latency and high-refresh-rate RF module, they are very comfortable for FPV Racing and Long Range FPV. These are very suitable for Tiny whoops because of the ultra-light and Nano size!
Note: This is the antenna only. The EP1_RX is sold separately.

Features Designed by Jye Smith on the ExpressLRS development team.
Ceramic Antenna
Omnidirectional

Specifications Antenna length: Optional 40mm (Regular) or 90mm (Long)
Peak Gain Position (Theta): 180.00
Upper Hem. Efficiency (%): 39.93
Lower Hem. Efficiency (%): 41.54
Peak Gain Position (Phi): 330.00
Efficiency ThetaPol (%): 20.90
Efficiency PhiPol (%): 60.56
Frequency (MHz): 2400.0
Compatability: EP1_RX
Antenna width: 52mm
Efficiency (dBi): -0.89
Efficiency (%): 81.46
Directivity (dB): 5.12
Connector: U.FL
Gain (dBi): 2.23
Includes 1x Happymodel ExpressLRS EP1 RX 2.4GHz Omnidirectional U.FL Antenna (40mm or 90mm)