Spectrotek Services  Rife Plasma System Components

Ralph Hartwell - W5JGV

Web site updated - 2110 UTC - 10 March 2018

Ralph with the prototype of the first SSQ-2F system.Welcome to the new Spectrotek Services web site!
(We will be updating the web site during the next few weeks.)

General News & Updates

10 March - We have released an updated version of our popular PA3 amplifier, the PA3 v3.0 E.

The PA3 v3.0 E has improved shielding on the circuit board for improved waveform quality. Some of the onboard components have been rearranged for better airflow which improves component cooling. The PA3 v3.0 E has a selectable input termination resistance of either 50 or 470 Ohms. This allows the PA3 to accept input signals from frequency generators that have either a low or high impedance output.

Another new feature of the PA3 v3.0 E is the addition of three diagnostic LED's. These LED's allow the operator to instantly determine if the PA3 is operating correctly. The LED's also allow rapid diagnosis should an amplifier failure occur during operation.  Please refer to the instruction manual for all technical details. Download the manual here.

The price of the PA3 v3.0 E is the same as our earlier version, $265.00.

10 March - We now have a new version of our popular LC31BAT coupler, the LC31L-BAT.

Click for full size.

After a comprehensive redesign of our earlier LC31-BAT coupler, the LC31L-BAT was born. Featuring a heat resistant polycarbonate coil form and a larger diameter primary winding, the LC31L-BAT is capable of powering the Bill Cheb SSQ-BAT plasma tube at 500 watts peak power or 250 watts average power without the need for forced air cooling when operated in an ambient air temperature of 25șC or less. Some additional cooling may be required at higher air temperatures. (See instruction manual for details.)

The price of the LC31L-BAT is the same as the earlier version, $85.00. Please refer to the instruction manual for all technical details. Download the manual here.

10 March - Special Items:

We have a few blank boards still available for the previous version of the PA3 (v2.0), and some boards for the intermediate prototype version of the PA3 (v3.0 C.) These are priced at $12.00 each, plus shipping.  Neither of these two type of boards have the diagnostic LED's that are on the PA3 v3.0 E.

We have available one (1) assembled and tested PA3 v3.0 C intermediate prototype amplifier, with heat sink and fan. The price for this unit is $200.00, plus shipping. It is identical to the "E" version except for the solder mask color and no diagnostic LED's.

Please send us an email if you are interested in any of these items.

- The SPA5 v1.0G signal processor-amplifier is available for order. The price for the SPA5 assembled and tested is $385.00 plus shipping. The PayPal link to order the SPA5 is not on our web site yet, but you may order the SPA5 by emailing your order request to us at: engineering@spectrotek.com

The SPA5 is the same size as the SPA4,and since the same power supply connections and voltages are used with both amplifiers,
this makes the SPA5 a "drop-in" replacement for the SPA4. The SPA4 is NOT recommended for new installations. Use the SPA5 instead as it is much easer to use.

A big advantage of the SPA5 is that it has fully automatic duty cycle control, regardless of changes in the audio input level (within the specifications in the instruction manual.)  Just turn on the power, start FreX running, then sit back and watch the SPA5 run your entire frequency session without needing to make any other adjustments.

The instruction manual for the SPA5 amplifier may be downloaded by clicking HERE.

Feel free to browse over to the Photos page and have a look at the many different construction methods and configurations used in assembling the plasma tube amplifier systems. Just select the SUPPORT button at the top of this page, then click on the CUSTOMER EQUIPMENT PHOTOS tab that will drop down. The photos page will then open up in a new window in your browser.  Or, you can just click on THIS LINK instead.

SPECIAL ORDERING NOTE - When ordering any LC31 coupler, please be sure to let us know exactly which plasma tube you will be using so that we can be sure to send you the right coupler for your plasma tube. The web site does not have all the types listed.
(That's my fault!)

You probably found our web site while you were searching for information about plasma tube systems for your experimental Rife system.

On this web site you will find information about our products, as well as a considerable amount of technical data about plasma tube systems. There are many free technical manuals and other data available for you to download. By reading these documents, you will find out how our equipment works and what components you will need to assemble your own working plasma tube system. There are lots of technical details about how and why our equipment does what it does. It is not necessary to understand all the technical details in order to assemble your own system. Just follow the suggested procedures in our instruction manuals, and you will be fine. We also offer technical help by email or telephone calls.

Why did we develop this equipment?  Since 1997 we have been experimenting with Rife plasma tube systems, starting with the earliest 27 MHz equipment developed by Dr. James Bare, D.C. Because of our many years of experience with radio frequency equipment and transmitters, we felt we could make improvements in the radio frequency design of the equipment.

When Jeff Garff published his groundbreaking analysis(1) of the method by which the operating frequencies of the research equipment developed by Dr. Royal Rife actually worked, the whole concept of frequency generation was changed. A soon as Jeff showed that a single audio frequency sweep (we named it Jeff's "Big Sweep") from 500 to 25,000 Hz combined with a carrier frequency of 3.1 MHz (3,100,000 Hz) would generate all the known Rife laboratory frequencies, we decided that it was time to design a solid-state system that would "do the job."  But we also wanted to make the system usable for experimenters who didCheb plasma tubes in one of our test racks. not have a laboratory quality frequency generator. We needed something simple, readily available, and easy to use.

Enter the personal computer. This was exactly what we needed for the audio frequency signal source. The computer would run a frequency generating program to produce the necessary audio frequency sweep to modulate the 3.1 MHz carrier. And our new solid-state audio processor (which would become the SSQ-2F system) would make the transition between the computer and the plasma tube.  But, there was a serious problem...

Although computers are pretty good at playing music and speech files, it turns out that they are terrible at making nice, sharp, square waves, at frequencies much higher than about 1,000 Hz. Since we must have sharp square waves all the way up to at least 25,000 Hz for running Jeff Garff's "Big Sweep," this would have been a show-stopper. Luckily for us, it turns out that computers can produce very nice sine waves all the way up to at least 19,500 Hz or higher, depending on the quality of the sound card system in the computer.  But even if we could use sine waves, the limit of 19,500 Hz is well below the needed 25,000 Hz for Jeff's "Big Sweep." What to do?

The solution was to design the SSQ-2F.  The SSQ-2F accepts the sine wave audio signal from the computer, amplifies it, doubles the frequency, converts itThe SSQ-2F v3.22 audio processor for Rife plasma tube systems into an adjustable duty cycle square wave, and then uses the square wave to modulate the 3.1 MHz carrier wave. After further amplification, the modulated carrier is sent to the plasma tube.

By doubling the computer's audio frequency signal in the SSQ-2F hardware, we can have the computer to generate a sweep frequency of 250 to 12,500 Hz, which the SSQ-2F will then double to obtain the required 500 to 25,000 Hz for running the "Big Sweep." By using the SSQ-2F, we eliminate the need for a precision square wave generator, by substituting an ordinary personal computer instead.

Using the SSQ-2F lets us use audio signals from iPods, MP3 players, CD players, or any other device that can reproduce a sine wave signal. All in all, the SSQ-2F is the most versatile audio processing system for plasma tube operation. The SSQ-2F will handle any audio frequency, so your plasma tube system is not limited to using only Jeff's "Big Sweep." You may use any frequency or group of frequencies you wish to use with your plasma tube system.

Since the advent of the original SSQ-2F, the same high-quality circuit design and manufacture has been incorporated in our other units such as the PA2, PA3, and SPA4.

We also provide other fine equipment for building your personal plasma tube system. Please click on the OUR PRODUCTS button at the top of this page for information about out other products. Please contact us if you have any questions about our equipment.

(1) For an in-depth look at the research that Jeff undertook, and the final results of his work, please visit these links at his web site:

Looking for a Rife plasma tube for your system?

The SSQ-PT at full power.
Bill Cheb SSQ-PT external electrode plasma tube operating at 50 watts average power, 100 watts peak power.

At this time, we do not sell plasma tubes, but you may obtain high-quality plasma tubes from Bill Cheb.

Bill has designed several new tubes especially for use with the SSQ-2F system.

If you would like more information about Bill's plasma tubes, please go to his web site billsplasmatubes.com or call him at 855-538-4992.

Do you want the best computer software for your Rife plasma system?

FreX16 screenshot

We recommend FreX16 and FreXmcm, written by Ken Uzzell.

FreX16 allows full control of the frequency sets you want to use with your plasma tube system.

FreXmcm allows you to run simultaneous multiple frequency sweeps with your plasma tube system.

If you would like more information about FreX16 and other useful software from Ken, please go to his web site at  frex.com.au

>> FreX16 and FreXmcm may be downloaded directly from the Spectrotek web server HERE. <<

Are you looking for a complete Rife plasma tube system?

We suggest the 38DVISION model DBx2~PRO plasma tube system.

This unit is built under license from Spectrotek Services.

The DBx2~PRO is a portable, self contained high power plasma tube Rife machine, featuring selectable power output levels of 120 and 250 Watts. The unit operates with a nominal 50% to 60% square wave duty cycle modulation. The Duty Cycle is automatically controlled.

The unit measures 32" x 14" x 5", and weighs 33 lbs. It is designed for ease of maintenance and use.

The DBx2~PRO includes the Bill Cheb 30" (76.2cm) x 3" (76.2mm) SSQ-BAT plasma tube.

The unit comes with a dedicated Acer Aspire One netbook computer, loaded with the necessary software to provide the frequency programs for operating the equipment.

If you would like more information about the DBx2~PRO,please send an email to drake@38dvision.com or visit 38dvision.com.

>->   If you are looking for stuff from our old web site, then   <-<

Click HERE for still pictures from the Florida Teslathon 2003

Click HERE for low-res movies from the Florida Teslathon 2003

Click HERE for pictures from North High School, Columbus, Ohio, "North On The Fourth"

Questions? Contact Ralph by telephone:

+1 318 527-6766

or Contact us by Email if you have questions.

This web site and all contents including pictures, text and diagrams is Copyright © 2012 - 2018 by Ralph M Hartwell.

All Publication, Reproduction and Manufacturing Rights Reserved.