appears that many people buying a rife machine for the first
time decide on a GB-4000, possibly because it was one of the
first of the modern ones. Also, its comparatively large size and
colorful design may make it seem appealing and easy to use.
manufacturer says the GB was designed to run standalone, without the
assistance of external software (although it does come with rudimentary
software, discussed below). This may be an issue for some people (it was for
me), since it requires doing almost everything manually in the hardware during
use, which can be a lot of button pushing. The manufacturer says most of his
customers run standalone and don't want the complexity of software.
unit produces both sine and square waves up to about 100 kHz and sine
waves above that.
for those who don't mind running the GB standalone, it has some issues buyers
should be aware of:
unit itself — especially when used with the SR-4 amplifier —
takes up a lot of space. Each is about 10 inches wide by 8 inches deep.
Moreover, there are three power supplies — two for the GB and one for the amp.
If you leave the
GB on for an hour (formerly 15 minutes) without running it, a message appears,
telling you to turn it off. Unfortunately, turning it off and on again resets it,
deleting any information you entered. So if you were in the
middle of a program or series of programs you had entered
manually and paused the machine to do something for more
than an hour, you couldn't continue (and couldn't
tell where you had left off).
GB has a serial port to connect to your PC, even though newer computers have
switched to USB and no longer have a serial port (which is slower anyway). The
manufacturer sells a serial-to-USB converter as a workaround. I tried one (not
purchased from him), and it caused a communication problem with my PC, which
required some work to fix.
and SR-4 have two small cooling fans each, which I found noisy on the older unit
I had. The manufacturer says he's now installing quieter fans and will upgrade
older models for a nominal fee.
have to have to enter sweep, gate, duty cycle, and other parameters manually.
The manufacturer has updated the machine's
internal software (firmware) as of mid-2011 and says this permits saving some of
these functions after entering them via the keypad. It also permits skipping a
frequency or group and muting the beep the device produces when it changes
frequencies or programs. (The manufacturer formerly installed a mute switch upon
request.) The firmware on older models can be updated for a nominal fee.
you can set up a sequence of channels (programs), you
can't set a channel sweep for all programs in the sequence. When the GB moves to
the second program in the sequence, the channel sweep is canceled. (The firmware
update may have corrected this or made a workaround possible.)
can't run channels in audio mode (i.e., with no RF carrier frequency),
presumably to avoid shock.
to the manufacturer's website, the GB is "The only
Frequency Generator capable of outputting 8 Frequencies
However, it does this only up to 40,000 Hz. Above that, it
runs only two simultaneously (plus the carrier). Since
the frequencies for many pathogens are in the megahertz
range, eight simultaneous frequencies below 40 kHz may be of
may find the 10-watt output of the SR-4 less useful than they anticipate. First,
it amplifies only the RF output of the GB. Second,
resonance is the important factor, not power. If applied correctly, the right
frequency, even at low
power, will do the job.
offset (keeping output voltage above zero — reported to be
preferable for rifing) is available but, unlike
software-based machines, can't be selected on a
case-by-case basis. It must be specified when ordering the
machine (or can be retrofitted). The default is no positive
small advantage of the GB over, say, the F-SCAN is that it
has sturdy cables. However, if you want to use the GB with
adhesive electrodes instead of handgrips, you'll need
adapters, because the leads that come with the GB have
banana plugs and the electrodes have 2mm (pin-type) female
connectors. (Adapters are available from Mouser:
part #565-1432-0 for black and -2 for red. Additional 5-foot
banana leads are also available: part #1440-60-0 for black
and -2 for red. These can be handy if applying frequencies
to the arms and feet simultaneously. Reusable adhesive
electrodes are available from Theratek.
The 2" round worked well (e.g., AXEL-62091).
GB comes with rudimentary software. What you see in the
screenshot is it —
just boxes to enter frequencies.
what you can't do:
text, such as notes or the name of the program being run.
in, import, or manipulate lists of frequencies — you have
to enter one at a time in the boxes.
frequencies in a program. It does have a cumbersome
mechanism for reordering programs by clicking a button to
move them up or down in the list.
parameters such as sweep, gating, or duty cycle or specify a
sequence of programs.
the unit from your PC.
After setting up a program on your computer, you have to
download it to the GB (which can take 5 minutes via the
a program load and run automatically when the unit starts.
of the machine's functions are not defined well enough for
someone unfamiliar with them to understand when or why they
would be used. For example, the definition of the Gate function
on p. 5 says it "allows you to turn the gate feature on or
off." Page 25 has a description of how to turn gating on or
off and how to change it. The Frequency List has a vague
paragraph on p. 9 about "What is gating or
entrainment?" But none of these says anything about when or
why one would use it. I had to look at the description in Nenah
Sylver's book to find out —
she quotes Jeff Garff, the manufacturer of the GB-4000. From his
quote, apparently it's important and should be used often —
a user wouldn't know this from the manual. She also says,
"there is some debate about which rate is the most
effective." It would be helpful to give users an idea.
also think it would be good to include a discussion of the
difference between gating, percent modulation, and pulse width —
when/why a user would change each one. (The absence of this is
not unique to the GB-4000's manual.)
although the individual functions are defined, the manual has no
description of a typical procedure to help users get started and
show the various options at each stage.
assume these omissions are to avoid problems with the
government, but I think a user shelling out a couple of thousand
dollars for one of these machines (plus an extra couple of
hundred for the manuals and handgrips) has a right to expect better information on how to use it. I think it's
possible to address these points without saying or implying that
the device is used for medical purposes.