The HP 8640B is a signal generator with an output frequency range of 500KHz - 512MHz. Has digital display with 6-1/2 digits. FM modulation 400Hz and 1KHz. Output Level 1V rms 600 Ohm. AM 10mV to 0.5 to 512MHz modulation: 0 to 100%. Output Power switchable from …

Besides the highly accurate and adjustable AM and FM modulated outputs (455 kHz to 512 mHz, option 2 to 1,024 mHz) the 8640B has a very accurate frequency counter. Lastly, because of the high quality construction and engineering you’ll find …

This page is devoted to one of the better signal generators available to the amateur user, the HP-8640B. I got mine from Canada and, thanks to Jan Skirrow, who helped me picking it up, packaging and sending it to Spain, now I can generate nice signals from 0.45 to 550 MHz (at +20 to -145 dBm), modulated in AM and FM both with internal generated ...

Part Number: 08640-90017 (Jan74). This operating and service manual is provided for information only. The 8640B is no longer sold by Keysight. Yes, I would like to receive educational or promotional emails from Keysight. By clicking the button, you …

Mar 13, 2025 · The 8640B AM / FM Signal Generator is designed for testing of radio receiver systems. It is a phase-locked cavity design that features low SSB phase noise. An internal frequency counter provides phase-lock synchronization or can …

The HP 8640B Signal Generator is a popular vintage unit; the last of the analog. It is new enough that, unlike the venerable 606, there are a few custom electronic bits and a couple of mechanical parts which can be challenging.

The HP 8640A and 8640B are signal generators which cover the frequency range of 450 kHz to 550 MHz, and can be extended to 1100 MHz with a frequency doubler. These generators provide AM, FM and pulse modulation. The 8640A has a mechanical dial; the 8640B has a built-in counter

"To dramatically illustrate how far signal generator design has come in the last decade, here is the equipment replaced or partially replaced by the new HP 8640B high performance signal generator plus a frequency doubler.

Jun 5, 2017 · The veritable 8640B generator, a marvel of engineering and still remarkable design today, it has reached an age where repair is often hampered by obsolete parts – sure, you can search for a donor unit or some NOS parts in some far away places, but in other cases, it is more practical to replace the circuitry with some new parts, especially ...

HP call this amplifier a modulator and it takes the form of a hybrid held within a case that looks like a large gold TO3 can. Following the modulator is a second identical-looking hybrid carrying a 16dB RF amplifier. Within this second hybrid is the RF …