規格與說明:

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The Joymax VHX-362BccXB is a straight whip-style, monopole antenna designed for use in long-range unlicensed band communication application including CATV, hardto-reach smart sensors e.g. smart meter supporting 138 MHz VHF frequency band .
The antenna features omnidirectional radiation. Connection is made to the radio via a SMA plug (male pin) or RP-SMA plug (female socket) connector.
 

Electrical Data (120mm x 120mm reference ground plane)
Frequency (MHz)	VSWR (Max)	Peak Gain (dBi)	Efficiency (%)
138 MHz	1.5	-0.7	44
Polarization		Linear
Wavelength		¼-wave
Electrical Type		Monopole
Radiation Pattern		Omni directional
Impedance (Ohms)		50 Ω

  

Mechanical Data
Mounting Type	Connector Mount
Termination	SMA Plug (male pin) or RP-SMA Plug (female socket)
Dimension	⌀13 mm x 154 mm
Antenna Color	Black
Op. Temp	-30˚C to +70˚C
IP Rating	N/A