Run a 25 ft RF connection between an N-interface device or antenna and equipment using a reverse-polarity SMA antenna port. The VENTEV 615605 cable assembly combines LMR-400 50-ohm coaxial cable with an N male connector on one end and an RP-SMA female connector on the other. This connector pairing supports installations where the two interfaces must be joined directly without an intervening adapter. LMR-400 is a low-loss 50-ohm coaxial cable type used for RF signal paths where cable loss matters more than with smaller, more flexible antenna leads. Its larger cable construction suits fixed antenna runs, including links between indoor radio equipment and a remotely mounted antenna. The 25 ft length provides reach for routing through a rack area, wall penetration, or equipment room while retaining a single continuous coaxial path. The reverse-polarity SMA female end must be matched to the mating RP-SMA male interface; RP-SMA uses a center-contact arrangement that differs from standard SMA despite similar outer-thread geometry. Likewise, the N male end requires a compatible N female connection. Check both mating interfaces before installation, and route the cable with bend radius and physical protection appropriate for a larger-diameter LMR-400 run.