Editing N connector (section)

==Design==
[[File:Cross section of an N connector mated pair.jpg|thumb|Cross section of an N connector mated pair]]
The interface specifications for the N and many other connectors are referenced in MIL-STD-348.<ref name="MIL-STD-348">{{cite book |title=RADIO FREQUENCY CONNECTOR INTERFACES FOR MIL-DTL-3643, MIL-DTL-3650, MIL-DTL-3655, MIL-DTL-25516, MIL-PRF-31031, MIL-PRF-39012, MIL-PRF-49142, MIL-PRF-55339, MIL-DTL-83517 |date=2017-01-22 |publisher=US DOD |edition=B with change 3 |url=http://quicksearch.dla.mil/qsDocDetails.aspx?ident_number=35726}}</ref> Originally, the connector was designed to carry signals at frequencies up to 1&nbsp;[[GHz]] in military applications, but today's common Type N easily handles frequencies up to 11&nbsp;GHz.  More recent{{When|date=March 2022}} precision enhancements to the design by Julius Botka at [[Hewlett-Packard]] have pushed this to 18&nbsp;GHz. The [[gender of connectors and fasteners|male]] connector is hand-tightened (though versions with a hex nut are also available) and has an air gap between the center and outer conductors. The coupling has a {{frac|5|8}}-24 [[Unified Thread Standard|UNEF thread]]. [[Amphenol]] suggests tightening to a torque of {{convert|15|inlb|Nm}},<ref name=":0">{{citation
  | last = Amphenol
  | title = N type datasheet
  | url = http://www.amphenolrf.com/products/CatalogPages/TypeN.pdf}}</ref> while Andrew Corporation suggest {{convert|20|inlb|Nm}} for their hex nut variant. As torque limit depends only on thread quality and cleanliness, whereas the main operational requirement is good RF contact without significant steps or gaps, these values should be seen as indicative rather than critical.