Ray don't forget the other side. on recieve if you can't here it you are just making noise. RG-58 is around 1.4 at 10Mhz RG-8 is .5 at 10Mhz 9913 or LMR 400 is .9 at 50MHZ . You will lose 25% with rg-58 at 10MhZ and over half at 50. Save the money on the amp and buy the better coax. Jim KF9XK