Berkeley Nucleonics has designing and engineering precision RF and microwave instruments for over 60 years. The Model 845 is a versatile RF microwave signal generator that combines ultra-low phase noise, fast switching, and broad frequency coverage making it a dependable choice for engineers working across VLF through K-band applications.

• Wide Frequency Range: Continuous coverage from 9 kHz to 26.5 GHz (available in 12 GHz, 20 GHz, and 26.5 GHz models) with sub-Hertz resolution for precise tuning.
• Exceptional Signal Purity: Advanced fractional-N synthesis delivers low SSB phase noise and high spurious suppression.
• Accurate Power Control: Wide, leveled output power range with excellent linearity.
• Fast & Responsive Operation: Quick frequency switching paired with an intuitive touch-screen display for efficient bench or automated use.
• Customizable Configurations: Tailor the instrument with a variety of options (modulation, interfaces, enclosures, and more) to match your exact requirements.

A low-noise microwave RF signal generator supports critical applications including radar and electronic warfare development, satellite communications, 5G/6G component validation, phase-locked loop testing, and high-frequency research. Its combination of spectral cleanliness, fast agility, and customization flexibility makes it especially valuable when signal quality and repeatability are non-negotiable.

The Model 845 Microwave RF Signal Generator also includes AM, DC-coupled, low distortion wideband-FM, PM, FSK and PSK, frequency chirp, and fast pulse modulation with an internal pulse train generator as standard. Three internal modulation sources are available, and all modulation modes can be combined. This allows the generation of complex modulation signals for modern communication and location systems.

The Model 845 is ideally suited for applications where a high-quality CW microwave source with analog modulation is required. The Model 845 operates with an ultra-stable temperature compensated 100 MHz reference (OCXO) and can be phase-locked to any external reference from 1 to 250 MHz. Additionally, the combination of pulse modulation and FM simulates Doppler effects or chirp signals. Simultaneous AM and pulse modulation provide the types of signals occurring in pulse radar applications with a rotating antenna. What’s more, the combination of FM and AM can be used to check the fading effects of FM receivers.

The Model 845 operates online or battery power making it useful for field applications or large laboratories. The Model 845 Signal Generator introduces the smallest footprint in its class.