N 1/2" connectors for base tower engineering Impedence 50 working temperature ¦-65+165µ Insulation resistance¿m5000 relative moisture 90%95%¿40a2µ Vswr¿02ghzn1.10 atmospheric pressure 70106kpa Im3¿dbc55 waterproof ip68 Contact resistance (mouter conductor n1.0 corrosion(salt spray test) continuous mist for 48 hours ¿5% nacl