Hi Time-Nuts guys, I was reading the Trimble Thunderbolt manual section 2.1.3 (Antenna Cable). Trimble recommends using RG-59 cable which is 75 ohm coax. Is this a typo or is this correct? I thought that the Trimble Thunderbolt would use a 50 ohm cable and antenna. Thankyou Ken Kubick kenkubick at hotmail.com