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SMA Extension Cables: 7-feet to 50+ feet

LMR-100, LMR-200 and LMR-400:  Features & Comparison

Within the family of low loss coaxial antenna cables, the following three are the most notable: LMR-100, LMR-200 & LMR-400. As closely related siblings they each share commonly associated characteristics and possess comparable benefits. Their purpose? Simple - conveying radio frequency transmitted signals across physical distance, with minimal loss or interference. Here are some typical application scenarios:

  • HDTV deployment,
  • broadband internet networks,
  • CCTV,
  • video
  • radio
  • antenna runs
  • wireless assemblies
  • WLAN
  • GPS

Coaxial cables, by definition, are designed and manufactured along similar fundamental principles. These all give rise to their apparent functional benefits. Let's take a look at the technical features (composition) of the cables and draw relation to how they contribute to the user benefits (advantages):

  1. Copper clad-steel conductor - an excellent carrier of radio frequency signal, ideal for almost any cabling challenge
  2. Dielectric PE foam - a superior dampener of loss of electromagnetic radiation
  3. Double shielding - aluminium sheet plus copper braiding for maximum preservation of signal strength across length of cable
  4. Outer Jacket - a robust finish, ideal for maintaining functional excellence in physically challenging environments

Now, a like-for-like comparison of the three coaxial champs: LMR-100, LMR-200 and LMR 400:


1. Inner conductor

  • LMR-100 conductor: approximately 0.46 mm (0.02 inches) in diameter
  • LMR-200 conductor: approximately 1.42 mm (0.06 inches) in diameter
  • LMR-400 conductor: above 2.74 mm (0.11 inches) in diameter

2. Dielectric foam diameter & material

  • LMR-100 foam diameter: 1.52 mm (0.01 inches), Polyetylene foam
  • LMR-200 foam diameter: 2.79 mm (0.001 inches), Polyethylene foam
  • LMR-400 cable sheath: 7.24 mm, (0.29 inch) Polyethylene foam

3. Inner shield

  • All copper braiding

4. Outer shield

  • All aluminium layer

5. Outer cable sheath diameter, material & color

  • LMR-100 cable sheath: approximate 2.79 mm (0.11 inches) diameter, Polyethylene black
  • LMR-200 cable sheath: approximately 6.1 mm (0.24 inches) in diameter, Polyethylene, black
  • LMR-400 cable sheath: above 10.29 mm (0.41 inches) in diameter, Thermoplastic elastomer, black

Other qualities which the LMR-100, LMR-200 & LMR-400 have...

Temperature stability = operable unto 85-degrees C maximum temperature  and a minimum of -40-degrees C. Hot or cold, your LMR coaxial cables are adept at doing well. Bending radius =  the LMR-100, LMR-200 and LMR-400 have respective bend radii of: 6.4 mm (0.25 inches), 12.7 mm (0.5 inches) and 25.4 mm (1.0 inches). Agile, without question. Weight = as all-rounders, consideration has been applied to their overall weight for ease of installation. The weights are as follows: LMR-100 0.02 kg/m (0.013 lbs/ft), LMR-200 0.03 kg/m (0.02 lbs/ft) and LMR-400 0.10 kg/m (0.068 lbs/ft) Each cable is made conscientiously without the use of halogens according to standard health and safety protocol.

How do the LMRs compare for loss of quality?

As classified as low loss, you can probably imagine they all fare well in this category. But for further detail, please read on:

At 900 MHz

  • LMR-100 = 0.75 dB/m. (0.23 dB/ft.)
  • LMR-200 = 0.33 dB/m. (0.09 dB/ft.)
  • LMR-400 = 0.13 dB/m. (0.039 dB/ft.)

At 2400 MHz

  • LMR-100 = 1.28 dB/m. (0.39 dB/ft.)
  • LMR-200 = 0.54 dB/m. (0.12 dB/ft.)
  • LMR-400 = 0.22 dB/m. (0.066 dB/ft.)

At 3500 MHz

  • LMR-100 = 1.58 dB/m. (0.48 dB/ft.)
  • LMR-200 = 0.67 dB/m. (0.21 dB/ft.)
  • LMR-400 = 0.27 dB/m. (0.081 db/ft.)

At 5800 MHz

  • LMR-100: 2.10 dB/m. (0.64 dB/ft.)
  • LMR-200: 0.87 dB/m. (0.264 dB/ft.)
  • LMR-400: 0.36 dB/m. (0.108 dB/ft.)

Double shielding benefits: LMR-100, LMR-200 and LMR-400

Are you applying hardware to a particularly noisy environment? Concerned about your loss of signal strength to electromagnetic interference? You'll be please to note that LMR-100, LMR-200 and LMR-400 are accomplished preservers of signal strength due to their double shielded composition. All aforementioned cables have in-built shielding from both an aluminium layer providing 100% coverage and a denser copper braiding layer. Combined this leads to a minimal loss cable and also one that effectively blocks out external interference.

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