Feb. 23, 2011
 
Hi Gary and KC,
 
Here is a chart that I put together that shows how LMR-400 works vs. other RG type cables.
 
 
================== FOR 50 FEET OF CABLE ======================= 
 
RG-58 with 50 feet of cable at 146 mhz   ( $0.24 per foot )  
 
        50 watts  --> into cable --> 25.78 watts to antenna
      150 watts  --> into cable --> 77.37 watts to antenna
 
RG-8 with 50 feet of cable at 146 mhz     ( $0.60 per foot )
 
        50 watts  --> into cable --> 29.1 watts to antenna
       150 watts --> into cable --> 87.3 watts to antenna
 
RG-213 with 50 feet of cable at 146 mhz   ($0.89 per foot)
 
        50 watts  --> into cable --> 36.2 watts to antenna
       150 watts --> into cable --> 108.66 watts to antenna
 
LMR-400 with 50 feet of cable at 146 mhz  ($0.40 per foot )
 
        50 watts --> into cable -->  42.06 watts to antenna
       150 watts --> into cable -->  126.209 watts to antenna
 
 
================= Cable Data ===================================
Cable             Loss per 100 feet at 146 mhz
-----------------------------------------------------------------
 
RG-58            5.75 DB per 100 feet
 
RG-8x            4.7   DB per 100 feet
 
RG-8              4.7   DB per 100 feet
 
RG-213           2.8  DB per 100 feet
 
LMR-400         1.5  DB per 100 feet  
 
=============================================================
 
73's
Bill
K4HVH