LMR400 Low Loss N Male to N Male Antenna Cable – 1, 5, 10, 20 or 30 m

Give your antenna installation a dependable connection with an LMR400 low loss cable featuring N male connectors at both ends. It connects antennas to compatible equipment and is a practical choice when you want to limit signal loss between an antenna and a mobile signal booster or other RF equipment with N female ports.

Placing an antenna where reception is best often requires a longer cable run. Cable attenuation then affects how much of the signal reaches the equipment. This cable has a stated attenuation of approximately 0.19 dB per metre at 2100 MHz, making it suitable for installations where low cable loss is a priority.

The pre-fitted N male connectors provide threaded connections at both ends. There is no need to fit connectors yourself: simply connect the cable to matching N female ports. Equipment with other connector types requires a suitable adapter.

With an outer diameter of approximately 10 mm, this cable is thicker than thin antenna cables while remaining bendable for planned cable routing. Allow sufficient room around corners and cable entries, and avoid tight bends that strain the cable or connectors.

Choose 1, 5, 10, 20 or 30 metres to suit the distance between the antenna and your equipment. Selecting the shortest suitable length helps keep total cable attenuation down.

✅ Benefits

• Low cable attenuation – approximately 0.19 dB/m at 2100 MHz, according to the product information.
• Ready to connect – supplied with N male connectors at both ends.
• Five available lengths – 1, 5, 10, 20 or 30 metres for different installations.
• Threaded N connectors – secure mechanical connections to matching N female ports.
• Practical for external antennas – allows the antenna to be positioned away from the equipment.
• Thicker cable construction – approximately 10 mm in diameter for installations prioritising low attenuation.

🎯 Ideal for

• Connecting an external antenna to a mobile signal booster with N female ports.
• Mobile broadband antenna installations requiring matching cable connections.
• RF equipment with N female ports requiring a pre-assembled antenna cable.
• Homes, holiday properties and business premises where the antenna needs to be positioned separately from the equipment.
• Cable runs where limiting signal loss is important.

🔧 Connection and use

Plan the cable route and select 1, 5, 10, 20 or 30 metres to suit the installation. Include the distance around corners, through walls and up to the connection points when measuring.

Connect one N male connector to the antenna’s N female port and the other to the equipment’s N female port. Equipment with SMA connections, for example, requires a suitable N-to-SMA adapter.

Route the cable with gentle bends and support it so that its weight does not pull on the connectors. Protect the cable at entry points and avoid trapping it in doors or windows.

For outdoor installations, seal exposed connectors and cable entries against moisture. Also check that the cable’s environmental specifications suit the intended location.

Cable attenuation varies with frequency and length. The value at 2100 MHz should therefore not be treated as a universal value for every mobile or WiFi band.

📡 Capacity and connections

📉 Calculated cable attenuation at 2100 MHz

Calculated from the stated value of 0.19 dB/m. Connector and adapter losses are additional.

⚙️ Technical specifications

📦 Package contents

• 1 × LMR400 low loss antenna cable with N male connectors at both ends.
• Cable length as selected: 1, 5, 10, 20 or 30 metres.