Sirio Vector 4000 Base Antenna
Similar to the ”Avanti Sigma IV” this is an extremely powerful and tall 3/4 wave base antenna tunable from 27 to 28.5 MHz. All the various joints of the inverted cone type radials are perfectly waterproofed.
Technical specifications:
Type of Antenna: 3/4 wave
Frequency Range: Tunable from 27 to 28.5 MHz
Length: (approx.) 8480mm
S.W.R.: < 1.2:1
Power Rating Max.: 1000 watts (CW) continuous 3000 watts (CW) short time
Gain: 2 dBd, 4.15dBi