Sirio CX 164 U

The Sirio CX 164 U is a robust 3/4λ VHF base antenna designed for professional use within the 164–168 MHz frequency range . Ideal for applications such as 2M HAM, ORBCOMM M2M, AIS (162 MHz), the VHF marine band and ISM-169 MHz . This antenna offers high efficiency, easy installation and long-term reliability.

The Gamma Match power supply provides DC grounding for static protection. No tuning is required within the specified frequency range. The design is constructed entirely from aluminum tubing and reinforced nylon, with a galvanized steel mounting bracket included for mast mounting.

At 143 cm in length and with a gain of 2 dBd (4.15 dBi ), the CX 164 U delivers excellent performance with an omnidirectional radiation pattern.

The Sirio CX 164 U is an excellent choice for those looking for a powerful, maintenance-free and professionally deployable VHF antenna.

Frequency range Sirio the different antennas from the CX series:

• CX 140 U: 140 - 144 MHz @ SWR ≤ 1.5
• CX 144 U: 144 - 148 MHz @ SWR ≤ 1.5
• CX 148 U: 148 - 152 MHz @ SWR ≤ 1.5
• CX 152 U: 152 - 156 MHz @ SWR ≤ 1.5
• CX 156 U: 156 - 160 MHz @ SWR ≤ 1.5
• CX 160 U: 160 - 164 MHz @ SWR ≤ 1.5
• CX 164 U: 164 - 168 MHz @ SWR ≤ 1.5
• CX 168 U: 168 - 172 MHz @ SWR ≤ 1.5
• CX 172 U: 172 - 176 MHz @ SWR ≤ 1.5

The lengths of the different antennas from the CX series:

• CX 140 U: 1660 mm (5.45 ft)
• CX 144 U: 1620 mm (5.31 ft)
• CX 148 U: 1580 mm (5.18 ft)
• CX 152 U: 1535 mm (5.04 ft)
• CX 156 U: 1500 mm (4.92 ft)
• CX 160 U: 1460 mm (4.79 ft)
• CX 164 U: 1430 mm (4.69 ft)
• CX 168 U: 1395 mm (4.58 ft)
• CX 172 U: 1370 mm (4.49 ft)