function[y]= xmitlnlength(freq)% xmitlnlength%% transmission line length formula for coaxial cable to an antenna% (the velocity factor for coax is approximately 0.66)% frequency is in Mhz,length is in feet%% programmed by Earl R. Wilson%wvlength=300/freq;v=0.66;y=984*wvlength*v/freq;