N4PY; Pegasus Control Program, version 1.45; May 2001
N4XM; XMatch Antenna Tuner; Mar 1997
N9CR; Contest Radio Operating System; Aug 1983
National; 200 Transceiver; Dec 1967
National; NCL-2000 Linear Amplifier; Feb 1965
National RF; Vector-Finder VHF Direction Finding System; Jun 2007
National Semiconductor; SC/MP Microprocessor; Jan 1977
NCS; 3240 Multi-Switcher; Jun 2003
NDI; HC-1400 2-M FM Transceiver; Nov 1979
Nel-Tech Labs; DVK-100 Digital Voice Keyer; Nov 1987

Network Sciences/AC0C; Roofing Filter For the Yaesu FT-2000; May 2012
Noise Cancellation Technologies; ClearSpeech Speaker; Apr 1999
Noise Cancellation Technologies; ClearSpeech-Line DSP Audio Filters; Apr 1999
NorCal; SMK-1 QRP Transceiver Kit; Nov 2000
North Shore; RF Technology Duplexer Kits; Jan 1974
Northern Lights Software Associates; Nova for Windows 32, Version 2.0; Apr 2000
Nova Plus Software; Nec2Go; Jan 2008
NuWare; NuMorse Professional version 1.30; Sep 2002
Nye Co., William; SSK-3 Keyer/Paddle; Apr 1976
Nye-Viking; 020-001 Low Pass Filter; Aug 2002
Nye-Viking; MB-V-A Antenna Tuner; Jun 1994
Nye-Viking; MB-V-A Antenna Tuner; Mar 1997
Nye-Viking; RFM-003 Peak-Reading MF/HF Wattmeter; Feb 1991

N6BT; Q-52 Portable HF Yagi, September 2012