[LMR] equivalent of [RG-8] CoaxialCable, suitable for microwave applications, such as 2.4GHz wireless LAN use. [LMR-400] will attenuate a 2.4 GHz signal by approximately 0.22 dB/meter. Due to this loss, [LMR-400] cable should be restricted to cable lengths of up to a maximum of 15 meters (~3.3dB attenuation). If you have a cable run around this length, or need longer, you may want to redesign your layout so you can place the radio closer to the antenna. If that's impossible (such as you have a very tall tower to cable), you may want to investigate [LMR-600] or [LMR-1200]. Time Microwave Cable Loss Calculator: http://www.timesmicrowave.com/cgi-bin/calculate.pl You can get [LMR-400] from Vak at the monthly meetings.