Sirio cx-4 (4m) base station antenna 68-73mhz , 73-78mhz ,78-83mhz , 83-88mhz
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Sirio Antennas

Sirio CX-4 (4m) base station antenna for 68-73MHz, 73-78MHz, 78-83MHz, and 83-88MHz.

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£59.95
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Product code: SPA-CX468
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Item CostFinance OptionDepositMonthly PaymentsTotal Cost
£59.95
12 Months 14.9% APR
£6.00
£5.17
£67.99
£59.95
18 Months 14.9% APR
£6.00
£3.44
£67.99
£59.95
24 Months 14.9% APR
£6.00
£2.58
£67.99
£59.95
36 Months 14.9% APR
£6.00
£1.72
£67.99
£59.95
48 Months 14.9% APR
£6.00
£1.29
£67.99
£59.95
12 Months 19.5% APR
£6.00
£5.37
£70.47
£59.95
18 Months 19.5% APR
£6.00
£3.58
£70.47
£59.95
24 Months 19.5% APR
£6.00
£2.69
£70.47
£59.95
36 Months 19.5% APR
£6.00
£1.79
£70.47
£59.95
48 Months 19.5% APR
£6.00
£1.34
£70.47

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Sirio cx-4 (4m) base station antenna 68-73mhz , 73-78mhz ,78-83mhz , 83-88mhz

Sirio CX-4 (4m) base station antenna for 68-73MHz, 73-78MHz, 78-83MHz, and 83-88MHz.


The base station antenna is a mono-band, low-gain, omnidirectional antenna made of aluminium alloy 6063 T-832. It is factory tunable according to the specific customer's frequency requirements and offers protection from static discharges with DC-Ground technology. An upgrade option, part number 2104301.00 CX 4-68, extends the working frequency.

Regarding electrical data, the antenna is a 3/4λ coaxial J-pole type with a frequency range of 68-73 MHz for the CX 4-68 model, tunable by diagram. It has an impedance of 50Ω unbalanced, offering 360° omnidirectional radiation in the H-plane and a beam width of 60° in the E-plane. The antenna has a vertical polarization, a gain of 2dBd - 4.15 dBi, and a bandwidth of ≥ 1.7 MHz at 68 MHz with SWR ≤ 1.2 at the resonant frequency, supporting a maximum power of 500 Watts.

Regarding mechanical data, the antenna is constructed with aluminium, brass, stainless steel, and nylon materials. It can withstand wind loads of 97 N at 150 Km/h and has a wind surface area of 0.08 m². The antenna's height ranges from 2720 to 3325 mm, weighs approximately 1900 grams, and is designed to be mounted on a mast with a 35-42 mm diameter.

The Sirio CX-4 (4m) base station antenna is designed for "frequency PRODUCT OPTIONS" and covers frequencies from 68 to 88 MHz. This antenna model offers specific frequency ranges, including 68 to 73 MHz, 73 to 78 MHz, 78 to 83 MHz, and 83 to 88 MHz, providing a versatile solution for various communication needs within these frequency bands.

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