Hewlett Packard 8657A 1000Mhz Signal Generator HP8657A 1040Mhz Synthesized Signal Generator: High Performance, Low Phase Noise, +13Dbm to -145Dbm, Internal 400hz and 1000hz audio frequencies, AM / FM, Non-Volatile Rom Memory Frequency Storage, External Modulation input Connector, HPIB interface, 100Khz to 1040Mhz, Reverse Power Protected, 1991 and newer models, 90 day warranty..$3600  Return to Used Equipment