Outputs all of the frequencies that Dr. Rife used in his original Rife Machine and Rife Machines.
REFURBISHED WITH FULL 2-YEAR WARRANTY.
ONLY 1 SET IN STOCK AT THIS TIME.

Includes the Latest 2026 Hardware and Software/Firmware Updates.
We only sell and stock the latest "Factory Fresh" GB-4000 Products.

This 2026 (Latest Model) GB-4000 and SR-4 Amplifier COMBO features maximum RF power capability, is feature-rich, and super easy to use - the SR-4 Amplifier connects easily to the GB-4000 using a BNC cable (included) and boosts the RF output of the GB-4000 from 2 watts up to 15 watts power. The COMBO includes the latest software/firmware revisions (we always sell only the latest models), and three 120 Volt and 240 Volt auto-switching power supplies.

We also provide FREE Technical Support, and both the GB-4000 and SR-4 have a two-year Manufacturer's Warranty. 4.25" H x 20" L x 8" W. (Shipping weight: 10 lbs., Shipping size: 16" H x 13" L x 12" W)

IMPORTANT NOTE: Due to government regulations, the GB-4000 Accessory Kit (which includes 2 Stainless Steel Cylinders with Cotton Covers, 2 Stainless Steel Plates with Cotton Covers, and the New Universal Sideband Frequency List) can be purchased separately from RifeGlobal for $165.99. When you purchase our GB-4000 Package, we will provide you with the contact information where you can purchase the Accessory Kit.

  In Stock - Available for Immediate Shipment
FREE Shipping in the contiguous USA

          

Included Accessories:

Technical Specifications:

• Stand Alone Frequency Generator: Unlike some generators on the market today, the GB-4000 was designed to be a simple to use, easy to operate, stand-alone frequency generator requiring no complicated computer interface to use all of its features. Computer operated generators generally work well but many people do not feel comfortable having to use a computer to operate all of a frequency generator's options. Our customers appreciate that they are not required to have a computer to operate any of our instrument's capabilities. The computer software for programming frequencies into the GB-4000 is an option, not a necessity. Its software was designed specifically not to be a hard to use computer interface. But it is for programming channels with frequencies and restoring any lost programmed channels that may be accidentally deleted by the user.
• New 2026 Software Revision D8 allows frequency selection to 1/100th of a Hz!
• New 3.1 MHz Carrier frequency
• Mute Feature: Allows you to mute the beeper if you choose
• Skip Feature: Allows you to skip any frequency group or frequency in any channel
• Save Gating Feature: Allows you to save, in any channel, that the gating is turned ON whenever that channel is used
• Variable Channel Sweep Feature: Allows you to now vary the frequency range of all frequencies in any channel from 10 to 1000 Hz
• Programmable channels: 2000
• Channel capability: 48 frequencies in sequence or 8 groups capable of holding 8 frequencies each
• Computer software: GB-4000 programmable software included
• Outputs: Four - 2 red and 2 black
• Power output: Variable up to 3.7 watts
• Voltage output in audio mode: 40 volts peak to peak
• Voltage output in RF mode: Over 110 volts peak to peak making it over 9 times more powerful than most standard frequency generators
• Frequency range: 0.01 to 20 million Hz
• Frequency output: Digitally accurate frequencies converted to analog using a DAC
• Output multiple frequencies: Up to 8 audio frequencies simultaneously to 40,000 Hz
• Eight audio frequency range: 0.01 to 40,000 Hz
• Output RF multiple frequencies: Two
• Two RF frequency range: Up to 20 million Hz
• Wave forms: Square and Sine wave. Square wave to 150,000 Hertz. Sine to 20,000,000 Hz
• Duty cycle capability: 10% to 90% square wave duty cycle
• Gating or pulsing range: 5 - 2200 Hz
• Gating duty cycle range: 10% - 90%
• Carrier wave frequency: Now with new 3.1 MHz RF (Radio Frequency) capable of producing harmonic sidebands like the 1930's, 1940's and 1950's equipment
• Carrier wave on and off capability: Carrier wave can be turned off so the user can operate it as a standard audio frequency generator
• Channel sweep: Variable - 5 Hz to 1000 Hz + and - of the target frequency or frequencies in all 2000 channels
• Standard sweep: 0.01 to 20 million Hz
• Converge sweeps: Two frequencies
• L.E.D: RF indicator light confirms RF output
• Display: LCD
• AC adapters: 3 switching 120/240 volt power supplies for worldwide use
• Two-year manufacturer's warranty and FREE Technical Support
• Equipment may be returned within 30 days from date of purchase less a 20% re-stocking fee and the cost of original insured shipping.