LMR 400 / SD400 cable


LMR 400 / SD400 cable the best coax cable that can be used in domestic and commercial communication. If your cable is broken, needs replacement or simply is too short this cable will definitely suit, we can cut to any length you require

Also we do cable configuration service to save you time and confusion if you need different length or connectors just let us know.

1 Qty = 1 Meter

970 in stock



LMR 400 / SD400 cable flexible low loss communications coax with thick copper inner conductor.

This cable is highly versatile and can be used for a range of installations such as: Relays, mobile repeaters, mobile broadband, radars, Yagi antennas, panel antennas, omni antennas, grid antennas, WIFI antennas and any application that can utilize coax cable to get its signal.

Full spec can be found under this link: https://www.timesmicrowave.com/DataSheets/CableProducts/LMR-300.pdf

Construction :

Inner conductor Bare copper/Copper clad steel Φ1.8 mm
Dielectric Foam /Solid PE Φ5.0±0.02 mm
Shield Bonded aluminum foil Φ5.2 mm
Outer conductor Tinned copper braid Φ5.7 mm
Sheath PVC/PE Φ7.5 mm
Color Black


This LMR 400 / SD400 cable is designed to transmit the maximum signal to your antennas, with copper conductors for less signal loss. This cable is hard wearing and durable against the outdoor elements so you can feel safe knowing that you are buying a high quality product that will last.

Engineers recommendation 

For self installation 

You will find with this high quality cable, the dimensions and spacing of the conductors are uniform. Any abrupt change in the spacing of the two conductors along the cable tends to reflect radio frequency power back toward the source, causing a condition called standing waves, reducing the amount and quality of the transmitted power.

You should allow three inches of cable to make a 90 degree turn in your runs without causing signal loss. The connectors used with the coax must also hold the correct spacing through the body of the connector to avoid signal loss


Price is per meter. We offer free shipping for all over Ireland for cable orders over 10 meters and €6 for cable lengths below 10 meters.

Should you require our specialized termination service we can terminate this cable to suit your needs and supply you with the correct connector fitting that you require for example to SMA type male, N type male or N type female connectors.

Our Commitment to you 

All our cables are checked upon arrival to the warehouse and again before packing to make sure that they reach our highest standards and offer you the premium product you are buying.

If you are unhappy with your purchase you can get in touch with us and we can help you with your query.

1 Qty = 1 Meter

Additional Resources
Other Names
LMR 400 / SD400 cable