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23 Years Resonating With You

Our Company

We are Resonant Light Technology and we love what we do. We are located on Vancouver Island in British Columbia, Canada. We reply to all inquiries within 1 business day.

Our Mission

We’re here to help and educate people. Since 1996, we’ve been a beacon of light for countless frequency enthusiasts worldwide. We would be truly honoured to assist you on your journey too.

Our Passion

People. Interacting with you gives meaning to everything we do and hearing your success stories fills us with a joy that words can’t even begin to describe.

Donald L. Tunney, Founder

Edna Anne Tunney


Edna is the heart of Resonant Light Technology. She is a master educator and trained speaker with a keen passion to share her vast experience with frequency technology. She leads the Resonant Light team with a healthy dose of compassion and professionalism.

She also provides introductions for newcomers plus high-level training to those more familiar with this technology. World-wide audiences benefit from her talks by taking away actionable skills, new tools, and fresh motivation to impact their lives.

Our Plasma Devices Over 23 Years


First Prototype

Don with his very first Rife machine prototype based on Dr. James Bare’s designs.

R.B.T. #5

The final version of the Rife-Bare-Tunney device, which used two plasma tubes to broadcast its frequencies.

R.B.T. #1

Don kept improving Dr. Bare’s design so much that a new device came to light, the Rife-Bare-Tunney (R.B.T.) machine.

Classic PERL

The Photon Emission Resonant Light (PERL) device improved every aspect of the R.B.T., in a much lighter and portable package.

R.B.T. #2

Don started experimenting with different frequency generators and different plasma tube shapes for optimal results.


Introduced multi-signaling and our revolutionary U-shaped plasma tube for a quieter, yet more powerful instrument.

R.B.T. #4

The most realized and popular iteration of the R.B.T. The original prototype has now grown to become an industry standard.


The PERL-M received a major internal spec bump to become the PERL M+, the best PEMF/Rife machine available today.

Our Frequency Generators Over 23 Years



Emits a single frequency at a time, & requires manual entry of each… and an egg-timer.


Added wave packets, a timer and simple programs. Only emits square wave shapes.

ProGen I

Runs programs one at a time. Multiple wave shapes available. Limited to 50% duty cycle and max 9Hz pulse (gating).

ProGen II

Customize & run multiple programs. Sweep, pulse to 1000Hz & 10-90% duty cycles. Capacity of 40 frequency Sets.

ProGen 3

Maximum output of 4,000,000Hz. Contains 2000+ frequency Sets with a 8190 Set capacity. Connects 2 contact accessories.