規格與說明:

The Joymax GWX-180ASA2B antenna is a whip-style, dipole antenna for sub-1 GHz 915 MHz and low-power, wide-area (LPWA) applications including LoRaWAN®, Sigfox®, Weightless-P, WiFi HaLow and other unlicensed ISM bands in the 902 MHz to 928 MHz range.
 
The tilt/swivel design allows the antenna to be positioned for optimum performance and reduces the potential for damage from impact compared to a fixed whip design. The antenna attaches with an SMA plug (male pin) or RP-SMA Plug (female socket) connector.

Electrical Data ( measured with the antenna hanging free in a straight orientation without ground plane )
Frequency (MHz)	VSWR (max)	Peak Gain (dBi)	Efficiency (%)
915	1.6	2.8	74
Polarization		Linear
Wavelength		½-wave
Electrical Type		Dipole
Radiation Pattern		Omni directional
Impedance (Ohms)		50