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TPI USB Wideband Signal Generator

TPI Wideband Signal Generator & Computer Display - RF CafeRobert Yarbrough, an independent consulting RF engineer, sent me information on a nice compact, inexpensive, wideband RF signal generator that he has developed. Joining what has become a very extensive array of USB-powered test instruments - signal generators, power meters, oscilloscopes, multimeters, spectrum analyzers, software defined radios, etc. - from various vendors, the TPI Synthesizer generates high spectral purity signals ranging from 35 MHz to 4.4 GHz with programmable output power levels from -55 to +10 dBm. Sweeping can be set for both frequency and power for testing both frequency and amplitude responses of passive and active devices. The unit can be locked to a 10 MHz external reference and it also has a buffered 10 MHz output for locking other devices to the synthesizer. Executable user interface software runs under Windows, and was developed for LabView and Tickle platforms. At a price of only $330, this synthesizer is well within the budgets of many experimenters and hobbyists, and can supplement the research and development laboratory equipment of professional and academic institutions. Extensive hardware and software descriptions are available on the TPI Wideband Signal Generator website.

For amateur radio enthusiasts, Morse Code and beacon software modules are available.

Project Trinity explosion - RF CageBTW, the logo in the document is a photo of the Project Trinity nuclear explosion, not a single scoop of ice cream ;-)



I get quite a few requests for consultant referrals. If you are in need of assistance, you might consider talking to Robert.

From Robert's homepage:

Robert Yarbrough founded RF-Consultant.com in March 2003. The facility is located in Austin, Texas.
Mr. Yarbrough has been serving the wireless community for 20 years in various RF technologies and has worked for industry leaders such as Boeing and most recently 3Com Corporation. Robert has extensive experience in both the military sector and the commercial end of the wireless business.

Robert has been involved with every aspect of product development to include:
  • Project Management
  • Project Development
  • Circuit Design (Schematics, Bill of materials)
  • Industrial Design
  • Prototype Builds
  • First article Builds
  • Beta Builds
  • FCC and other certifications
  • Manufacturing Set up
  • Wireless Engineering






Posted  January 20, 2014
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