In response to questions about the authenticity of Sirio products, we would like to inform you that Sirio includes anti-counterfeiting scratch cards only with selected antenna models.
You can find the list of models that include scratch cards for verifying antenna authenticity on the manufacturer's website: https://www.sirioantenne.it/en/anti-counterfeiting
The Sirio CX-4-68 is a 3/4 λ J-type vertical antenna for the 70 MHz (4m) band.
Made of aluminum, the antenna allows proper tuning within the 68-73 MHz frequency range.
A UHF SO239 (UC1) socket is used to connect the feed line.
Basic information about the Sirio CX-4 68 base antenna for the 70 MHz band:
- a base vertical antenna with an omnidirectional pattern
- the ability to tune to a selected frequency within the 68-73 MHz range
- protection against static charge discharge
Sirio CX-4 68 electrical parameters:
- 3/4 λ J-type vertical antenna
- frequency range: 68 - 73 MHz
- impedance: 50 Ohm unbalanced
- radiation pattern: horizontal 360° ( omnidirectional ), vertical beamwidth 60° ( at -3 dB )
- elevation angle: 3°
- polarization: vertical
- gain: 4.15 dBi
- bandwidth: 1.7 MHz for SWR < 1.5
- SWR at resonant frequency: <= 1.2
- maximum power: 500 W
- feed method/point: gamma match/base
- cable connector socket: UHF SO239
Sirio CX-4 68 mechanical parameters:
- materials: aluminum, brass, stainless steel, nylon
- wind resistance: 150 km/h
- wind load: 97 N at 150 km/h
- wind resistance area: 0.08 m2
- height: approx. 2720 - 3360 mm
- weight: 1.9 kg
- mast diameter: Ø 35 - 42 mm
Included with HamRadioShop:
- Sirio CX-4-68 antenna
- proof of purchase (receipt or invoice upon request)
- original packaging
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