F6CTE; MultiPSK; Jan 2004
F6DEX; TRX-Manager; Jan 2003
Flesher; TR-128 Baud Rate Converter; Apr 1980
Flesher; TU-170 RTTY Terminal; Mar 1979
Flesher; TU-300 And -470 RTTY TUs; Jun 1983

FlexRadio Systems; FLEX-1500 Software Defined HF/50 MHz Transceiver; Dec 2011
FlexRadio; Flex-3000; Nov 2009
FlexRadio Systems; FLEX-3000 Software Defined HF/50 MHz Transceiver; Oct 2009
FlexRadio Systems; FLEX-5000A HF/50 MHz Transceiver; Jul 2008
FlexRadio Systems; SDR-1000 HF+VHF Software Defined Radio Redux; Oct 2005
FlexRadio Systems; SDR-1000 Software-Defined HF/VHF Transceiver; Apr 2005
Fluke; 8000A 3 1/2 Digital Multimeter; Jun 1973
Fluke; 8020A Multimeter; Sep 1978
Force 12; C-3 "Classic" Triband Yagi Antenna; Jun 1995
Force 12; Sigma-5 Five-Band Vertical Dipole Antenna; Oct 2002
Force 12; ZR-3 Compact/Portable Antenna; Mar 1998
Fox-Tango; 2.1 kHz Kenwood TS-830S Transceiver Filter Modification; Sep 1983
Fox-Tango; YF-90H1.8 Crystal Filter; Apr 1982
Frederick Electronic Corp.; 1200 FSK Demodulator; Jul 1966
Freeplay Energy; FreeCharge WEZA Portable Energy Source; Aug 2006