HP 86633B Modulation Section for 8660 Series Signal Generators, Untested, As Is

HP Hewlett Packard 3312A Function Generator 13 MHz AM/FM Sweep Modulation

WAVETEK 3000-SP204 Signal Generator 1-520 Mhz AM/FM Modulation Tested

HP 86634A Phase Modulation Section - No way to test. Sold as found. See photos

RF Signal Generator, AN/URM-25D; 10kHz.-50MHz., 400 or 1000Hz. AF AM Modulation

HP 8671B Synthesizer Circuit Cards 20/30 Synthesizer Section

HP/Hewlett Packard 70902A IF Section Plug-In Module, Agilent, Keysight

HP Agilent 86632B AM - FM Modulation Section Plug-in