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Question

Does volume level affect microwaves?

Could microwaves from wireless iphone speakers do more harm when the volume is turned higher, or does volume not affect microwaves at all?

Thanks for any info.

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All Answers

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Answer
I'd have to define harm but

In reply to: Does volume level affect microwaves?

The cell phone radiation studies are out there and you have folk that worry about it and then some that are adverse in their feelings about any RF signals. I won't be addressing that.

But small world that it is now, way back when I was in R&D and the engineers there were experimenting with ways to beam form and modulate in the audio range. I won't get into that but if the mass was great enough that it could alter the microwave path and the volume level could move this mass then you could affect the microwave transmission. As to harm, you didn't detail what harm you mean but yes it could cause interference of the transmission.

Interesting stuff and we only tried this in the labs but it never left the labs since you could do the beam forming in other ways much more efficiently.

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Thanks.

In reply to: I'd have to define harm but

I see I'm already in over my head here, since I can't tell if my question was answered! Sorry if I'm trying your patience! I guess I simply wonder if the microwave output from the wireless iphone speakers increases when the volume is turned up, or does it stay the same.

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Now that depends on what design they used.

In reply to: Thanks.

But most designs use a fixed amplitude carrier and well, here's a Wikipedia on how it's modulated.

https://en.wikipedia.org/wiki/FM_broadcasting shows this graphic.


I won't get into this deeply but the why is simple. AM is subject to interference and FM isn't.

Notice how the third signal is just a fixed amplitude. Sorry but I'm an electronics designer with forays into many of its fields. (pun intended.)

Post was last edited on February 11, 2019 12:20 PM PST

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Ok but

In reply to: Now that depends on what design they used.

I'd be listening to itunes on my phone, not the radio. Also, I haven't yet bought the speakers. I'm just considering buying some at this stage, if I can be assured that the microwave output from the devices won't change if the volume is turned up.

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The speakers you are looking at

In reply to: Ok but

Are Bluetooth and it does not increase the RF level to get more volume. Not how it works. Also a phone's radio is order of magnitudes more power than Bluetooth.

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Oh, ok.

In reply to: The speakers you are looking at

That's good. Thanks.

Just to make sure I understand: the speakers will bring in more microwaves into my home, but turning up the volume will not. Right?

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If that works for you.

In reply to: Oh, ok.

The phone's radio can go for miles. The Bluetooth for speakers goes 30 feet. Bluetooth is such low power that, well, you get it by now.

Post was last edited on February 11, 2019 3:39 PM PST

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