Editing N connector (section)

==Impedance options==
[[Image:PICT7394 trimmed N.jpg|thumb|Picture showing the similarity between 50&nbsp;Ω (bottom) and 75&nbsp;Ω (top) Type N connectors]]

The N connector follows MIL-STD-348, a standard [[Defense Standard|defined by the US military]], and comes in 50 and 75&nbsp;[[ohm]] versions. The 50&nbsp;ohm version is widely used in the infrastructure of land mobile, wireless data, paging and cellular systems. The 75&nbsp;ohm version is primarily used in the infrastructure of [[cable television]] systems. Connecting these two different types of connectors to each other can lead to damage, and/or intermittent operation due to the difference in diameter of the center pin.<ref>{{cite book
  | last = Golio
  | first = Mike
  | title = The RF and Microwave Handbook, Second Edition
  | publisher = CRC
  | year = 2008
  | pages = 8–7
  | url = https://books.google.com/books?id=MCj9jxSVQKIC
  | isbn = 978-0-8493-7217-9}}</ref>

Unfortunately, many type N connectors are not labeled, and it can be difficult to prevent this situation in a mixed impedance environment. The situation is further complicated by some makers of 75&nbsp;ohm sockets designing them with enough spring yield to accept the larger 50&nbsp;ohm pin without irreversible damage, while others do not. In general a 50&nbsp;ohm socket is not damaged by a 75&nbsp;ohm pin, but the loose fit means the contact quality is not guaranteed; this can cause poor or intermittent operation, with the thin 75&nbsp;ohm male pin only barely mating with the larger 50&nbsp;ohm socket in the female.

The 50&nbsp;ohm type N connector is favored in microwave applications and microwave instrumentation, such as spectrum analyzers. 50&nbsp;ohm N connectors are also commonly used on [[amateur radio]] devices (e.g., [[transceiver]]s) operating in [[UHF]] bands.