I just installed a new 5' Wilson FGT using a new Wilson coax, in a truckstop parking lot. I didn't have much choice in what I bought and the SWR of 3:1+ mandated that I fix something right away. Since everything was factory original and had 7 years and a million miles on it, it was probably time anyways. But back to my question. I used the SWR meter on the radio (148 GTL) to time the antenna. Is this reliable enough?