ghzhamclub.hardware.antennas
Overview
You'll find that the radios section lists mostly 1.2 GHz FM equipment, as it's the most "commercially viable" of the amateur GHz frequencies (at least, from the perspective of the manufacturers). Surprisingly, you'd need a broad assortment of manufacturers just to get situated with a base station, mobile and HT in 1.2 GHz. Should you know of a manufacturer or unit I'm missing, please email me (my callsign @arrl.net).
Base Station Radios
DL5NEG's 2.3 GHz homebuilt transceiver: Check out this awesome project! Icom IC-910H: All-mode VHF/UHF/1.2 GHz satellite radio with optional UX-910 1200 MHz band unit. Kenwood TS-2000: With optional UT-20 1.2 GHz module.
Mobile Radios
Kenwood TM-541A: Single band 1.2 MHz operation with 10 watts RF output.
Handheld Radios
Icom T81A Quad-band HT: 6 meters, 2 meters, 70 cm and 23 cm all in one HT.
Transverters
SSB Electronic USA DB6NT Transverter Systems: Available for 1269 MHz. - 1296 MHz. -2304 MHz. - 3456 MHz. & 5760MHz.