We sell a lot of replacement antenna cables for these GPS receivers:
ProMark 3, MobileMapper CE, MobileMapper CX
ProMark 100, ProMark 120, ProMark 200, ProMark 220
MobileMapper 100, MobileMapper 120
The factory part number is 702058 and the factory cable looks like this:

702058 Precision Antenna Cable
This cable is reasonably priced ($85) and relatively well made, but….
It suffers from some endemic issues:
1. If the heat shrink on the right-angle end fails and the RG-58 coax rotates in the barrel the cable is toast. (This happens a lot.) The connector can not be repaired because the access screw is super-glued in place.
2. If this cable is used on these receivers:
ProMark 100, ProMark 120, ProMark 220
MobileMapper 100, MobileMapper 120
and the connector and cable are rotated 360 degrees, the connector will ALWAYS pull out of the receiver. Always.
S0 we have engineered an alternative cable:

iGage PN IG702058
This cable has a straight connector for the receiver, uses LMR100 microwave coaxial cable and has a braided sheath for cable protection.
This is what it looks like on a pole mounted receiver:
Additional information is available [ here ].