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New 2019 GB4000

Why choose the GB-4000?

Perfect Accuracy

Best Frequency Range with Perfect Accuracy

We believe it is extremely important to be able to produce the actual frequencies that the original researchers used. In order to achieve that with perfect accuracy, the GB4000 uses a Crystal Oscillator coupled with a Digital Signal Processor to produce its frequencies. The GB4000 is one of the most accurate and reliable frequency generators available today.

  • Can produce the high frequencies used by the original researchers
  • Accurate to one hundreth (0.01) Hz
  • Frequency Range - 0.1 to 20 Million Hertz
  • Uses 3.1Mhz RF Carrier Technology
  • Capable of producing output in both Audio and RF frequency range

Best Power

Highest Power Output

The GB4000 function generator works in conjunction with the SR4 amplifier to give you the best possible power output available today in a contact device. The GB4000 by itself is as much as 10 to 15 times more powerful than other machines on the market. When you add the SR4 amplifier, the maximum output power is up to 15 watts, which is as much as 75 times more powerful than other machines on the market.

  • Variable Power output up to 3.7 watts (up to 15 watts with the SR-4 Amplifier)
  • Voltage output in Audio Mode: 38 Volts Peak to Peak
  • Voltage output in RF Mode: 115 Volts Peak to Peak
  • User has complete control of output intensity
  • Offers 4 output - other frequency generators only have 2

Easy to Use

Easiest User Interface

When you are running your frequencies, the last thing you want is to have to fight your machine to get it to produce the frequencies you want. With the GB-4000 there is no scrolling through endless lists of options and numbers to get to the function you want. The GB4000 has a full keypad with all the functions and numbers you need directly accessible so it is extremely easy to use.

  • Full keypad for instant access to all functions
  • Comes pre-programmed with 873 Channels - ready to use right out of the box
  • Can store up to 2000 Channels. All the room you need for your custom channels
  • Easy to use sweep and gating functions
  • Displays frequencies on the screen and in the manual - no hidden frequencies
  • Fully programmable. No need to ever buy other frequencies or recordings. You can program and run any frequencies from 1 Hz to 20 Mhz
  • Comes with Video Tutorial DVD
Video Tutorials

8 Frequencies at Once

Run up to 8 frequencies at once.

The GB-4000 is the only instrument that is capable of running up to 8 frequencies simultaneously to 40,000 Hertz without frequency degradation. And it comes with that capability straight out of the box. No need to purchase additional equipment like some other machines on the market.

Running up to 8 frequencies at a time makes it up to 8 times faster than any other instrument. Why wase your time running one frequency at a time? And since the GB-4000 is so much more powerful than mose other machines available, it has plenty of horsepower to run those frequencies at the same time. It's like getting 8 frequency generators for the price of one.

Warranty Support Returns

World Class Warranty, Support, and Return Period

The Final piece of the puzzle. Warranty, Tech Support, and Satisfaction Guaranteed. You need to know that the machine you buy will give you hassle free service for years to come.

We are confident that you will be totally thrilled with your new GB-4000 frequency machine. So confident in fact, that we offer a category leading 2 year full warrantyand a full 60 day money back guarantee. As if that weren't enough, all of our instruments come with free lifetime tech support via phone and email. So you can feel confident that you will be able to use your machine for years and get the support you need, when you need it.

Contact Us

International call:
(00+1) 208-703-1604

(*Free Shipping within the Continental United States and Canada.)
When you purchase a GB4000, you will usually also want to purchase the Accessory Kit from KD Enterprises. The Accessory Kit is currently listed for $122.00 plus shipping. Your machine will come with all required connecting wires.

M.O.P.A. Combo Pack

M.O.P.A. Combo Pack


Now you can get the power of the M.O.P.A. Amplifier with the powerful features of the GB4000. The MOPA amplifier was designed based on an in-depth analysis of the equipment used by the original frequency researchers.

Though it has been updated with modern electronics, it still uses the RF tank coil and 812a vacuum tube needed to produce the original analog sine wave and square wave output of the original equipment.

  • Includes the GB4000 and the MOPA Amplifier
  • Hands-Free operation, non-contact frequency delivery
  • Only system on the market that can output the 1930s/1950s frequencies
  • Built-in frequency counter for easy configuration
  • Comes with full 2 year warranty

GB4000 SR4 Combo pack

GB4000 SR4 Combo pack

$2,545.00 SALE $2,445.00

GB4000 and SR4 combo pack. With the GB4000 and SR4 combo pack, you get all of the frequencies as well as the power output you need.

This combo will include the most update GB4000 hardware and software shipped directly from the factory. Save $100 when you purchase the GB4000 and SR4 combo pack compared to the price of these items if purchased separately.
  • Includes the latest most up to date GB4000 RF Frequency Generator AND SR-4 15 Watt RF Amplifier
  • 5 times more powerful than the GB4000 alone
  • Comes with both Audio and RF modes.
  • Highest power output available in a contact device.
  • You can program your own custom channels
  • Displays frequencies on screen and in the manual
  • Comes with a full 2 year warranty

GB4000 Function Generator

GB4000 Function Generator


The GB-4000 20 MegaHertz Sweep Function Generator is the most versatile frequency generator on the market today. In terms of frequency range, power output, and ease of use, the GB4000 is head and shoulders above the rest.
  • Widest frequency range of any machine on the market
  • Simple to use, but includes advanced features.
  • Comes with both Audio and RF modes.
  • Highest output power available in a contact device
  • Run up to 8 frequencies at once
  • You can program your own custom channels