This is one spare set of replacement antennas for your radio receiver.
- 10cm Set for XM, XM+, R-XSR, and more
- 15cm Set for R-XSR, XM+, X4RSB, S6R, and more
- Connector: IPEX4
- Wire: RF113 silver plated wire
(2) FrSky IPEX4 Spare Receiver Antennas (10cm, 15cm, or 15cm (V2) )
The 1/4 wavelength of 2.4GHz is ~31.23mm (R-XSR ~23.5mm, XM+ ~23mm, X4R-SB ~33.25mm).