Main technical parameters
315MHz Spring antenna
Frequency Range(MHz)：315MHz+/-5MHz
V.S.W.R：<=1.5
Input Impedance( W)：50
Max-power(W)：10
Gain(dBi)：2.15
Weight(g)：1
Height(mm)：23+/-1(37.5T)
Color：coppery
Connector Type：soldering directly
All of the antennas are under certification of USA HP network analyzer.
Dimension：wire diameter:0.5mm, number of coils: 37.5 circle
433MHz Spring antenna
Frequency Range(MHz)：433MHz+/-5MHz
V.S.W.R：<=1.5
Input Impedance( W)：50
Max-power(W)：10
Gain(dBi)：2.15
Weight(g)：1
Height(mm)：22+/-1(25T)
Color：coppery
Connector Type：soldering directly
All of the antennas are under certification of USA HP network analyzer.
Dimension：wire diameter:0.8mm, number of coils: 25 circle
868MHz Spring antenna
Frequency Range(MHz)：868MHz+/-5MHz
V.S.W.R：<=1.5
Input Impedance( W)：50
Max-power(W)：10
Gain(dBi)：2.15
Weight(g)：1
Height(mm)：13+/-1(9.25T)
Color：coppery
Connector Type：soldering directly
All of the antennas are under certification of USA HP network analyzer.
Dimension：wire diameter:0.8mm, number of coils: 9.25 circle
915MHz Spring antenna
Frequency Range(MHz)：915MHz+/-5MHz
V.S.W.R：<=1.5
Input Impedance( W)：50
Max-power(W)：10
Gain(dBi)：2.15
Weight(g)：1
Height(mm)：12.5+/-1(9T)
Color：coppery
Connector Type：soldering directly
All of the antennas are under certification of USA HP network analyzer.
Dimension：wire diameter:0.8mm, number of coils: 9 circle
