"RP-TNC" Reverse polarity TNC Connector
From LinkSys WAP11 Access Point

Male N-Type Connector
To connect to a Wave Guide, or Antenna

Lucent Type Connector
Connection for PCMCIA Wireless Cards

"RP-SMA" Reverse polarity SMA Connector
Antenna, and pigtail for a Dlink 520+ PCI Card

Image Showing a good professional connection
Female N-Type Connector, on LMR 400 Cable