"Resonating coax Take your mfj readings as close to the antenna as you can. Use as short of a jumper as possible and tune the ant. for lowest reflect and hopefully your R will be close to 50 and x as low as possible. Chose whatever type of coax you want to run, rg8 rg213 lmr400 what ever will handle the power you have with room to upgrade is Ideal. You want the perfect leingth of coax to run you stuff with only enough extra as you can using this meathod. Here is how you resignate your coax: Choose a leingth of about 6 feet longer than needed, I prefer 8 feet extra. Use a low power stock radio, a swr meter, a small and cheap dummy load rated for 50ohms and a coax t connector. Here is how you cut and measure the coax. Connect the radio, using whatever short leingth of coax you have with two ends on it, one end to the radio the other to the swr meter. Connect your t connector to the output or antenna section of the meter. One side of the t connect your dummy load Key and note the swr on the meter of the dummy load only. (very important) Now hook your longer than needed section of coax your going to use from your last box or main feed from your equipment to antenna. The other end of the coax DO NOT CONNECT TO ANYTHING. Key the radio and note the swr increase from when you just keyed on the dummy load. If your swr is much higher than trim 3 inches off at a time until you start getting close to a 2.1 swr. Now just cut a very small amount off at a time until your at an exact match with the dummyload. (If your dummy load showed a 1.5 dont keep trimming to lower the swr with both connected, this will creat an unbalanced load) What your doing is tuning the coax to match the SWR of your dummy load and will make it resginate at 27mhz just like the dummy load is. Lastly put a new end on your new resignated leingth of coax ( prefereably by soldering it on). Remove your dummy load and t connector and hook up your equipment."