[RG-213] is a replacement for [RG-8]. [RG-8] was the popular choice in [RG] CoaxialCable for years. Unfortunately, [RG-8] quality is unreliable. [RG-213] is similar to [RG-8] but is built to Military standards. The improved quality performance is well worth the higher cost. [RG-213] has a 95% shield coverage. Good quality [RG-213] attenuates a 2.4 GHz signal at around 0.5 dB/meter. Because of this, it is not recommended to use [RG-213] spans greater than 7.5 meters (~3.5 dB attenuation) for 2.4 GHz applications, otherwise the loss is too great for a reliable signal. If you need a length of cable around this length, or greater than this length, you should definately consider using [LMR-400] for the job instead. [RG-213] was designed more for signals in the range of 200 MHz to 600 MHz, and one common application is for [STL] use by FM radio stations.