Funniest snake oil theories

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But isn't there usually an AGC circuit on the RF side of most modern radio receivers?

On a TV screen for example, under no-signal conditions, we're looking at an "enhanced" noise floor caused by the wide-open AGC, right? If so, this would skew the comparison a bit, if we're trying to decide whether it's important that this particular noise is creeping into our (fixed-gain) audio circuits. It also raises the possibility that the video (and audio) noise on an untuned TV is coming predominantly from internal circuits upstream from the AGC, and not the cosmos.

On communications receivers you can turn off the agc and control it manually.
 
I agree with your points, and yes the pseudo scientific stuff does degrade.
Further JB's unapproved usage of JC's good name and lack of financial reward does not go down well in my books, especially in the context that JB is well heeled indeed.
Pseudo scientific stuff aside, it is curious that BQP's do quieten and dampen audio systems, and proper physics explanations would stand the product in much better staid.

Dan.



From searching the Web and this thread I'm left with the
impression that JC is the one who designed the bybee.
 
Remember though that an untuned audio circuit is not a receiver and it has no AGC.

That second bit was kind of my point. With no AGC, the noise floor stays at low ebb.

It doesn't even have the ability to discern or tune out interference and allow only one specific frequency through. It receives all frequencies equally at the same time.

Not sure that's completely accurate...

But provided that sufficient shielding is in place only the signals which are present in the DAC/opamp circuits already should be there and no outside external influcence.

However, the outside shield of a coax poses an important problem, it is the final shielding in an important system which must be shielded from outside RF, currents passing along the outside of the shield can then pose a problem, which is where ferrite beads come in.

It makes me wonder though how much of the signal which is also passing along the shield/braid is being attenuated by the rf interference and we don't know about it.

Wait... What?

And that is where dual conductor coax or twisted pair in a shield comes in, to mitigate against this. aka balanced line.

Isn't balanced audio primarily concerned with CMRR within the audio band?

The thing is though, and this is where most people forget their basic physics, is that no matter what the frequency of an RF signal is at, it is still producing a magnetic field in the conductor, and a magnetic field being induced in a conductor doesn't matter what frequency its oscillating at, it will still affect all other frequencies which are being carried along that same wire.

Affect how?

And this is where audio signals being affected by RF comes into play. If you remove the offending signals at higher frequencies with a ferrite bead then they don't have the ability to produce the offending magnetic field in a conductor and so therefore the magnetic field cannot then attenuate the audio signals going along the same conductor.

Wait - attenuate? What?

That is why ferrite beads on an audio signal cable work at all.

Unsubstantiated. Work on what exactly?

Mind blown yet?

Thanks, but no thanks. These days my Saturday nights are tragic enough without having to clean brain matter out of the carpet.
 
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By attenuating it. The process is induction.

If you put a permanent magnet ontop of two wires carrying an alternating electric current it will stop the electric current provided that the magnet directly opposes the magnetic field in the electric wire.

The same thing is occuring in the RFI that appears on a conducting wire, except the RFI is at a much higher frequency, but it still produces a magnetic field in the conductor which is going to attenuate the audio frequencies which are much lower in frequency.

The act of adding a choke to the wire produces a high resistance to the radio frequency interference and so therefore the RFI cannot produce a electromagnetic field in the wire.
 
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By attenuating it. The process is induction.

If you put a permanent magnet ontop of two wires carrying an alternating electric current it will stop the electric current provided that the magnet directly opposes the magnetic field in the electric wire.

The same thing is occuring in the RFI that appears on a conducting wire, except the RFI is at a much higher frequency, but it still produces a magnetic field in the conductor which is going to attenuate the audio frequencies which are much lower in frequency.

The act of adding a choke to the wire produces a high resistance to the radio frequency interference and so therefore the RFI cannot produce a electromagnetic field in the wire.

Uhh... No?

Wow.

(Sidebar: Do you guys have legal weed in Australia these days?)
 
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Ok then can you explain the process by which radio interference affects audio signals? Ok I'll give you an easy example, a microphone circuit is being interfered with by an AM radio station, the microphone itself is not to blame, the entire system is picking up AM radio broadcasts. Whenever someone turns on an amplifier that isn't connected to anything they are receiving AM radio broadcasts.

By rights a radio frequency signal operating at 1MHz should never have any influence on the audible frequency spectrum of 20Hz-20KHz. but it does.
 
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Ok then can you explain the process by which radio interference affects audio signals? Ok I'll give you an easy example, a microphone circuit is being interfered with by an AM radio station, the microphone itself is not to blame, the entire system is picking up AM radio broadcasts. Whenever someone turns on an amplifier that isn't connected to anything they are receiving AM radio broadcasts.

Are you referring here to an actual interference problem you're having with actual equipment?

By rights a radio frequency signal operating at 1MHz should never have any influence on the audible frequency spectrum of 20Hz-20KHz. but it does.

See, this kind of statement is simply too nebulous to do much with. What type of influence are you referring to, exactly? Is this about the "attenuation" thing again? Because that just ain't how it works, sorry.
 
What really is the problem is that the effect/affect magically disappears under controlled testing.

A few weeks ago I posted a comment that someone took a box of 78RPM phono needles (ancient) that claimed to be osmium tipped. They happened to have access to a mass spectrometer (?) and measured not a trace of osmium. I wonder if the rare earth claims of the BQP's would stand up?
 
the bybees that had the magic sauce in a clear glass fuse contained
cerium, lanthanum, neodymium,praseodymium and IRON. And traces of tantalum and titanium.

that was then, probably the magic sauce has changed since its now a film on ceramic.

If anyone knows where to buy the ceramic tubes and the copper end plates, should be real easy to make bybee clones for cheap.
 
the bybees that had the magic sauce in a clear glass fuse contained
cerium, lanthanum, neodymium,praseodymium and IRON. And traces of tantalum and titanium.

that was then, probably the magic sauce has changed since its now a film on ceramic.

If anyone knows where to buy the ceramic tubes and the copper end plates, should be real easy to make bybee clones for cheap.

R U Sirius
 
Kay, they can be well explained, AFTER THE FACT, that they exist and are used in industry, and then they are readily believed in. The physics may be fairly dated, so it is better explained, than the Bybee devices, but that does not rule out that 'Cooper's pairs' coupled with near superconductivity does not point toward why Bybee's original devices work. Of course, you have to suppose that 'Coopers pairs' can exist at room temperature, and that 'near superconductivity' can have effects, even though true superconductivity may not actually occur. Keeping and open mind, coupled with ACTUALLY TRYING SOMETHING, is most beneficial in cases like this.

Yawn, its getting a bit of a joke... though every so often you like to bring up the damm things, a bit of free advertising...; still a scam though.
 
So If you have the right tools, which I did have before I retired, its real easy

take the thing and remove the heatshrink and the insulator stuff. Stick the rest in a bath of pure nitric acid for a few hours. take the acid, dilute 100:1 and stick into a ICPMS
(inductively coupled plasma quadrapole mass spectrometer)
these days those things are good to better than 1 part per billion, and this will result in parts per thousand, and identifying all the metals takes a few seconds. Any university with a decent chemistry department (or planetary sciences) is going to have one of these.

but the 25 ohms without the internal resistor is kind of telltale sign that this is now some carbon compound that is fired onto the ceramic because its a much different color than the old ones.
 
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