“High‑gain CB antenna with symmetrical design and conical support frame”
“High‑gain CB antenna with symmetrical design and conical support frame”
“Base station antenna with radial support arms and loop tip”
Sirio Vector 4000 – High-Gain CB Base Station Antenna
“Precision‑engineered CB antenna with tripod base and segmented vertical rod”
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“High‑gain CB antenna with symmetrical design and conical support frame”
“Base station antenna with radial support arms and loop tip”
Sirio Vector 4000 – High-Gain CB Base Station Antenna
“Precision‑engineered CB antenna with tripod base and segmented vertical rod”

Sirio Antennas – CB, Amateur & Professional Radio Solutions

Sirio Vector 4000 – High-Gain CB Base Station Antenna

£0.00
(£0.00 exc. VAT)
£129.95
(£108.29 exc. VAT) + £5.00
Please note that there is an extra charge for deliveries exceeding 1.0 meter.
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Product code: Vector-4000
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Item CostFinance OptionDepositMonthly PaymentsTotal Cost
£129.95
12 Months 14.9% APR
£12.99
£11.20
£147.37
£129.95
18 Months 14.9% APR
£12.99
£7.47
£147.37
£129.95
24 Months 14.9% APR
£12.99
£5.60
£147.37
£129.95
36 Months 14.9% APR
£12.99
£3.73
£147.37
£129.95
48 Months 14.9% APR
£12.99
£2.80
£147.37
£129.95
12 Months 19.5% APR
£12.99
£11.65
£152.75
£129.95
18 Months 19.5% APR
£12.99
£7.76
£152.75
£129.95
24 Months 19.5% APR
£12.99
£5.82
£152.75
£129.95
36 Months 19.5% APR
£12.99
£3.88
£152.75
£129.95
48 Months 19.5% APR
£12.99
£2.91
£152.75

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“High‑gain CB antenna with symmetrical design and conical support frame”

Sirio Vector 4000 – High-Gain CB Base Station Antenna


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The Sirio Vector 4000 is a legendary CB base antenna known for its long-range performance and distinctive design. If you're chasing DX or just want to dominate the local airwaves, this antenna is a serious contender.

Key Specs & Features:

  • Type: 3/4 wave coaxial J-pole

  • Frequency Range: 27–28.5 MHz (CB & 10m band)

  • Length: Approx. 8.5 meters (28 feet)

  • Gain: 2 dBd / 4.15 dBi

  • Impedance: 50Ω unbalanced

  • Radiation Pattern: Omnidirectional (H-plane)

  • Polarization: Vertical

  • Bandwidth: 1350 kHz at SWR ≤ 2:1

  • SWR: ≤ 1.2:1 at resonant frequency

  • Power Handling:

    • 1000W (CW) continuous

    • 3000W (CW) short bursts

  • Connector: SO-239

  • Construction: Telescopic anti-corodal aluminium tubes

  • Mounting: Base station installation.

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