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Model 845 - 12, 20, & 26.5 GHz Microwave Signal Generator / RF Signal Generator

•   RM:19" Rackmount Kit

•   B3:Internal battery

•   TP:3U 19'' desktop included with touch display control

•   HP:Extended maximum output power (needs option TP)

•   PE:Power range extension to -90 dBm

•   PE3:Power range extension to -130 dBm

•   GPIB:GPIB interface added

•   WE3:Warranty extension to 3 years

•   WE5:Warranty extension to 5 years

•  100 KHz to 20 GHz+ Microwave Signal Generator, settable down to 9 kHz

•  0.001 Hz frequency resolution

•  -90 to +10 dBm in 0.01 dB (option 7096)

•  -108 dBc/Hz at 10 GHz carrier (20 kHz offset)

•   < 200 microsecs switching time

•  Ultra-wideband DCFM

•  AM/PM/fast pulse modulation

•  Programmable pulse trains, chirps

•  LAN VXI-11, USB-TMC, GPIB (opt)

•  DC power peak 18 Watts

•  Weight: 2.5 kgs total

Microwave Signal Generator, Fast Switching, Low SSB Noise

Technical Presentation (PDF) |Comparison Chart (pdf) |Full Product Line Card (pdf) | Press Release (pdf)

RF Microwave YouTube Video ChannelPress Release (pdf)

Berkeley Nucleonics' Model 845 RF Microwave Signal Generator is a low-noise and fast-switching microwave signal generator covering a frequency range from 100 kHz up to 26.5 GHz. The Model 845 Microwave RF Signal Generator offers a wide and accurately-levelled output power range with high spurious suppression. Advanced frequency synthesis with fractional-N divider makes for low SSB phase noise and micro-Hz frequency resolution.


  • Only 400 ΅s frequency switching time
  • Very low SSB phase noise: -108 dBc/Hz at 10 GHz and 20 kHz offset
  • Comprehensive AM, low-distortion, wideband
  • DCFM and high-speed pulse modulation for testing all types of receivers
  • LAN/USB/GPIB (optional) remote control with SCPI
  • 1999 command set
  • Input for USB power sensor
  • Powerful trigger and sweeping modes


  • ATE
  • R&D low noise signal source
  • Production testing (industry-leading switching times; high dynamic range)
  • Service and maintenance (battery operation)
  • Signal simulation (radar, WiMax, UWB)
  • Aerospace and defense (pulse modulator, chirps)


  • HP:High Output Power
  • LO:CW only, no modulation
  • R:1U Rackmount configuration
  • PE:Power range extension to -90 dBm
  • R:19" Rackmount Kit
  • LN:Ultra Low Noise
  • FS:Substantially reduces the switching speed
  • RB:Internal battery (Not Available with -R)
  • G:GPIB interface added (Not available with 7088)
  • WE3:Warranty extension to 3 years
  • WE5:Warranty extension to 5 years

The Model 845 is now available in 12, 20, & 26.5 GHz frequencies. In addition to this the Model 845 can be customized and configured to each users' specific needs. Available with HP (high output power), LO (CW only, no modulation - only available on 20 GHz & 26.5 GHz), & R (1U rack mountable configuration).

New Features in the Model 845 Series

Option R - 1U Rackmount Configuration

Option HP - High Power - Output power enhanced up to +27 dBm

Option LO - No Modulation - CW only, no modulation - (only available on 20 GHz & 26.5 GHz)

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 internal pulse train generator as standard. Three internal modulation sources are available. All modulation modes of the Model 845 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 provides the types of signal occurring in pulse radar applications with rotating antenna. The combination of FM and AM can be used to check fading effects of FM receivers.

The Model 845 operates on line or battery power making it useful for field applications or large laboratories. Although the Model 845 Microwave / RF Signal Generator introduces the smallest footprint in it’s class, it clearly can fill the largest shoes !

BNC SigGen GUI (included with each shipment) below – (Try the GUI (zip))