Here are some testimonials we received from users of our frequency generators.

James Bare Plasma Sonics Ltd. Co (March 2007):  The package arrived on Friday. Thank you! Testing of the new F125 shows it to be everything you said it was. Works perfectly with no RF issues. I can use the keypad with the tube ignited and access all commands. A really significant change!

Bob Lentini , : Great job...  it is such a pleasure to find dedicated people like yourself... I knew I made the correct choice when I purchased your generator (F165) instead of all the others I looked at.

Dr. Richard Loyd, Seattle, WA USA:    It [F105] has arrived, thank you. It was fun to set up and experiment with ... This program is looking really good. I did not know about the vduty [command]. That will work really great for our type of devices. 50% at the low end and 85% or more at 10,000. ... I am currently running a (4 coils) with the F105 and it runs fine.

Mae Matthews, Australia:   [Re: F160] "- easy to use, I'm keen to start using it. Compliments on your software and user guide -clearly explained with examples, easy for the novice, and yet easy to progress to the more complex functions if desired. Software is so simple and succinct, and yet powerful."

Clay Bolick, England :   "This has to be the easiest, most versatile freq generating software l have ever seen."

Paul N, USA: "I have been using this F155 for a week now and it's great! A lot of options and the software is easy to use ... did you design and build these generators? good job! and thank you. If you are just selling them, thank you too. Paul "

"I want to thank Patrick for his help.He is always there to support this device and answer questions."

Mike T., USA:  "Your support is incredible!"

More user reviews

Dr. Richard Loyd, Seattle, WA USA  (about the F105 Dick first used. Dick now also uses the F165):

"This is a short review of the F100 family of frequency generators available from

They are easy to use and have a number is useful features... It is easy to program a series of frequencies. A different run time can be set for each frequency.

Gating: Gating is included with user's choice of gate speeds.

Duty Cycle: Duty cycle is adjustable. It is also possible to have the duty cycle increase as the frequency increases.

The units do sweeps. I have the F-105 version which will do sweeps in .01 Hz steps and .01 second dwell, for example. This is meaningless below 100 Hz as this would produce less than one cycle at each step. So the device will also do 1 or more complete cycles per step. I am running it at .01 Hz steps and 1 cycle per step.

There are other features but this is an introduction.

It has adequate power output to drive 4 Darlington transistors in a 4 coil system.

I have no financial interest in the sale of these units. Dick "

Brian McInturf, Georgia, USA :

"I went to and downloaded the F100 software.

All I can say is *excellent*. This is exactly what I have been wanting in a function generator interface.

Once the software comes up, there is a blank screen with three buttons, Run, Hold, and Stop. All you do is start entering the runtime parameters and frequencies. See the F100 guide.txt for a list of them.

Here's an example of programming" ... " using the typical 3 minutes (180sec) per frequency at a 1Hz, 50% duty cycle gate rate. # indicates an optional comment line.

dwell 180
pulse 1 50
380, 1.2, 2720, 2489, 2170, 1800, 1600, 1550, 802, 880, 832, 787, 776, 727, 465, 444, 1865, 146, 125, 95, 72, 20, 450, 440, 428, 660


Enter the first two lines to define the dwell and pulse parameters (or have them in a template,) then cut and paste the desired set from the CAFL or other frequency list. It took me less than 1 minute to create that set! Commas are not necessary between the frequencies, and they can be in a column instead of rows. Here's something just as good. Set up a scan from 2000-2600Hz at 10 seconds per 1 Hz (with 4Hz gating)

# Scan 2000-2600 10sec/Hz
dwell 10
pulse 4 50
sweep 2000 2600 1

That also took less than a minute. There are other interesting features like "fuzz" (sweep up and down about the set frequency), goto (create loops in a set), and vduty, which linearly extrapolates the duty cycle based on the frequency. There are batch mode commands for running the sets (with or without the GUI) so that you can have a bunch of icons in a folder, each one a different frequency set. Click and run.

What a giant leap forward in function generator interfaces!


James E. Bare D.C., Plasma Sonics Ltd. Co. , ALBUQUERQUE, NM :

"The F-100 Series is a computer operated frequency generator custom built for the device. It can be operated via the [USB] port of a IBM type computer... It is an extremely high quality square wave  generator usable in electonic device testing and repair. It offers easy to use programming and full control of the square waves. "

Bruce K. Stenulson, Fairplay CO (about the F150 Bruce first used. Brian now uses the standalone F125) :

"The F150 series frequency synthesizers work superbly... A virtually unlimited collection of frequency sequence files can be created, saved, quickly called up to run, and easily re-edited & modified, with comments and notes added as desired... After working with the quick and flexible programming software used to drive the F150s, along with the potential for storing literally thousands of frequency sequences of essentially unlimited length, I have to say that I personally prefer the flexibility and ease of programming and use of the F150. It has become the new benchmark in performance, precision, and value."