The Sirio Vector 4000 CB Antenna New Version Similar to the "Avanti Sigma IV" this is an extremely powerful and tall 7 /8 wave base antenna. All the various joints of the inverted cone type radials are perfectly waterproofed.
Mechanical Data:
Materials:
Aluminium, Brass, Galvanized steel, Nylon
Height (approx):
8480 mm / 27.82 ft
Weight (approx):
4700 gr / 10.36 lb
Mounting type:
On-Mast
Type:
3/4 λ coaxial J-pole
Radiation:
Omnidirectional
Polarization:
Linear vertical
Frequency range:
27 ... 28.5 MHz Tunable
Systems:
10m-HAM
Gain:
2 dBd, 4.15 dBi
Bandwidth:
≥ 1.4MHz @ SWR ≤ 2
Max Power:
1000 Watts (CW) continuous 3000 Watts (CW) short time
Grounding protection:
All metal parts are DC-grounded, the inner conductor is coupled capacitively