Product size

1, Electrical Characteristics 
i) Resonate Frequency :         400~425 MHz 
ii) Impedance : 50 ohm Nominal 
iii) Radiation Pattern : Omni Directional 
iv) Polarization :  Vertical 
v) Standing Wave Ratio (S.W.R):  2.0   or   less   at Resonate point 
vi) Insulation resistance  :   500 M ohm at DC 500V 

2, Mechanical characteristics: 
The strength of fixing between sleeve and stud shall withstand the following stresses 
i)Vertical Direction:  6.0   kgs  (Except antenna and the part of connecting the cap)

ii)Vertical Direction:  4.0   kgs (Between the sleeve and the cap)