Phonetone SMA male to N female jack plug RF adapter Coaxial Cable connector converter Model: SMA male to N female Material: Alloy Suitable for Mobile signal booster/Antennas/Coaxial Cables It's typical use is for 50 ohms, but even if you were to use it to connect 75 ohm equipment it would work fine for 1 watt or less transmitters below 23 GHz. If your application is for cellular use this is fine up to 100 watts.