New GB4000 Training Video
This video shows the basic and more advanced functions of the GB4000 Frequency Generator to give you an idea of how it works. The focus gets clear aft...
US Domestic Orders
The GB4000 & Amp Combo Package
Frequency Generator Combo Package with RF Amplifier - More Powerful.Includes Extra Unadvertised Bonus
-Investment: $2305
(saves you $100)
Accessories not included.
The GB4000 Frequency Generator Deluxe Combo
The GB4000 Frequency Generator Deluxe ComboPackage with RF Amplifier & All Optional Accessories
Includes - GB4000 Frequency Generator & SR4 RF Amplifier
- Deluxe Vanguard Hard Case ($180 value)
- Positive DC Offset Option
(request during checkout) - Free Video Training incl. Quick Start
- Telephone & Online Tech Support
Includes Extra Unadvertised Bonus
-Investment: $2460
(saves you $360)
Accessories not included.
The GB4000 Frequency Generator Only - Investment: $1710
Accessories not included.
Accessories not included.
Looking for the Amp only?
Your Satisfaction Is Guaranteed:
You have 30 days to try out the GB4000 package that you choose. If you are not 100% Satisfied simply send it back to the return address listed on our Privacy & TOS page and we'll give you a prompt refund. There is no restocking fee - but we do deduct our shipping costs when we've paid for the shipping and the machine must be in new condition in the original box with original packing materials.
Canada, International, and Express Shipping Orders
The GB4000 & Amp Combo Package
Frequency Generator Combo Package with RF Amplifier - More Powerful.Includes Extra Unadvertised Bonuses -Investment: $2305
(saves you $100)
Accessories not included.
The GB4000 Frequency Generator Deluxe Combo
The GB4000 Frequency Generator Deluxe ComboPackage with RF Amplifier & All Optional Accessories
Includes - GB4000 Frequency Generator & SR4 RF Amplifier
- Deluxe Vanguard Hard Case ($180 value)
- Positive DC Offset Option
(request during checkout) - Free Video Training incl. Quick Start
- Telephone & Online Tech Support
Sorry - We've had to remove this package because we lose too much $ on the shipping to get the large case overseas. If you are in Canada or in the US and want a rush shipment of this package please call us on the phone.
-Investment:
Accessories not included.
The GB4000 Frequency Generator Only
- Investment: $1710
Accessories not included.
- Investment: $1710
Accessories not included.
Looking for the Amp only?
Your Satisfaction Is Guaranteed:
You have 30 days to try out the GB4000 package that you choose. If you are not 100% Satisfied simply send it back to the return address listed on our Privacy & TOS page and we'll give you a prompt refund. There is no restocking fee - but we do deduct our shipping costs when we've paid for the shipping and the machine must be in new condition in the original box with original packing materials.
| Analog vs Digital Frequencies |
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The Analog vs. Digital Frequency Debate for those wanting to know the facts. The current analog vs. digital scene is wrought with misconceptions and disinformation in the form of marketing hype. Such as, digitally generated frequencies do not vary, which implies that they do not have overtones and undertones. This would only be true if the frequencies remained digital. That is why digital frequencies from DDS (Direct Digital Synthesis) and DSP (Digital Signal Processing) are converted to analog before they are put out of the GB-4000 and all other analog frequency generators. These Digital-to-Analog Converters are called a DAC for short. You can see in the diagram below that a frequency comes out of a DDS or a DSP looking like stairs. The signal then goes through a DAC or Digital-to-Analog Converter. Then it goes through a Low-Pass or Bandpass Filter to finish the analog conversion. Now the frequency that you have is a very accurate analog frequency with all the overtones and undertones of that analog frequency. The analog frequency produced by a digital chip can be swept up or down with more accuracy than any old tube analog instrument. The most important thing to remember is the frequency has to be converted to analog before it is output from the frequency generator.
Digitally produced frequencies converted to analog are far superior to any signal that comes from an old antique tube type analog frequency generator. Antique tube type generators are very limited. If we want a frequency of 2128.5, an old tube analog generator would not be accurate enough to give you that frequency to use. It could only give you 2128. Also digitally converted frequencies allow you to sweep with far more accuracy than old analog tube type instruments. Even a thousandth or millionth of a frequency is possible even though this kind of accuracy is not needed. This is something that a purely analog instrument could not do as accurately. Digitally produced frequencies when converted to analog can accurately produce minute details. These analog frequencies when converted to a square wave waveform produce square wave harmonics. Some claim that their instruments which output analog frequencies produce advanced analog harmonics, but this is just sales hype. All the digital to analog frequency generators on the market today that we have tested with a spectrum analyzer produce the same analog harmonics. Anyone claiming to have some form of superior advanced square wave harmonics is just giving the consumer lots of sales hype. So when it comes to Analog Vs. Digital frequencies make sure that the person you talk to knows the facts. (For the GB-4000 specifications click here) |
GB-4000 Specifications
20 Megahertz Sweep/Function Generator
The only Frequency Generator capable of running 8 frequencies simultaneously.
The GB-4000 is the only FREQUENCY GENERATOR available that………
- Frequency range of 0.1 to 20 million hertz.
- Produces digitally accurate frequencies converted to analog for full analog harmonics.
- Incorporates a 2.4 MHz RF (Radio Frequency) carrier wave technology.
- Carrier wave can be turned off so user can use it as a standard low audio frequency generator.
- Produces square wave harmonics..
- Displays all frequencies on the LCD - not hidden program numbers like other frequency generators.
- Allows you to program your own frequencies and groups of frequencies (2000 custom channels available, each channels stores up to 48 frequencies).
- Computer programmable software included.
- Runs either single or multiple frequencies (up to 8 frequencies simultaneously).
- Capable of running a 90% duty cycle (almost double the power of other instruments; other frequency generators typically can only run a 50% duty cycle).
- Incorporates gating capabilities from 5 - 2500 Hz with a 10 - 90% duty cycle.
- Capable of running both sine wave and square wave waveforms.
- Channel sweep capabilities in all 2000 channels.
- Capable of running both narrow and broad range sweeps.
- Capable of running converge sweeps to 20 million hertz.
- Offers 4 outputs (other frequency generators have only 2 outputs).
- 9 times more powerful than any audio frequency generator.
Why Power 0utput Is Important In A Frequency Generator
When comparing the various instruments power output is a very important consideration. This is the reason the GB-4000 uses a carrier frequency so that more power can be output.The power output of most frequency generators on the market today that do not use an RF carrier frequency is only about 0.20 of 1 watt. The GB-4000 with the use of an RF carrier is about 2 watts and is over 9 times more powerful than these instruments. With the use of the optional SR-4 amplifier it is over 50 times more powerful.