Sirio MAG 145 3/8 Magnetic Antenna Mount with RG58 Cable and PL-259

The Sirio MAG 145 3/8 is a robust magnetic mount designed for installing mobile antennas on metal surfaces without drilling into the vehicle body.

Despite its MAG 145 designation, the mount has an approximate overall diameter of 160 mm, providing a wide magnetic surface and secure support for compatible mobile antennas.

The upper connection uses a 3/8-inch thread, commonly found on many CB 27 MHz mobile antennas and other radio communication systems. It includes 3.6 metres of RG58 coaxial cable, terminated with a male UHF PL-259 connector for direct connection to the radio.

The EPDM rubber underside helps protect the vehicle’s paintwork and improves contact with the mounting surface. Its construction combines chrome-plated brass, nylon and rubber for mechanical strength and durability.

Main features

• Brand: Sirio
• Model: MAG 145 3/8
• Manufacturer reference: 2502702.03
• Type: mobile antenna magnetic mount
• Antenna connection: 3/8-inch thread
• Mount frequency range: DC to 500 MHz
• Coaxial cable: RG58
• Cable length: 3.6 m
• Radio connector: male UHF PL-259
• Overall diameter: approximately 160 mm
• Weight: approximately 1,440 g
• Materials: chrome-plated brass, nylon and EPDM rubber
• Underside protection: paint-protecting rubber layer
• Installation: magnetic, no drilling required
• Use: temporary and removable
• Main colour: black with chrome-plated metal connection

Main advantages

• Quick installation without drilling
• Large and robust magnetic base
• Coaxial cable and PL-259 connector included
• Antenna can be removed or repositioned easily
• Rubber protection helps reduce paintwork damage
• Suitable for various antennas with a 3/8-inch thread
• Can be moved between compatible vehicles

Recommended applications

• Mobile CB 27 MHz antennas
• Compatible amateur radio antennas
• Temporary car installations
• Vans, trucks and commercial vehicles
• Travel and occasional radio operation
• Vehicles where drilling is not possible
• Mobile antenna testing and adjustment

Package contents

• 1 Sirio MAG 145 3/8 magnetic mount
• 3.6 m RG58 coaxial cable
• 1 fitted male UHF PL-259 connector
• EPDM rubber underside protection

Important note

Install the mount on a flat, clean and sufficiently large metal surface. Dust, sand or metal particles trapped between the rubber and the vehicle body may scratch the paintwork.

Magnetic retention depends on the material and thickness of the vehicle panel, antenna height and weight, vehicle speed and wind conditions. Always check stability before driving and inspect the installation regularly.

A magnetic mount is intended for temporary installations and does not provide the same mechanical security as a permanently bolted mount. Route the cable into the vehicle without crushing or damaging it.

Confirm that the antenna has a compatible 3/8-inch threaded connection. Check and adjust the SWR before transmitting. The DC to 500 MHz rating applies to the mount and does not mean that one antenna will operate throughout this entire frequency range.