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tech / sci.electronics.design / Re: Will two table radios always be in phase, out of phase/

Re: Will two table radios always be in phase, out of phase/

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Subject: Re: Will two table radios always be in phase, out of phase/
From: gnuarm.d...@gmail.com (Ricky)
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by: Ricky - Mon, 2 Jan 2023 01:10 UTC

On Sunday, January 1, 2023 at 4:20:35 PM UTC-5, John Larkin wrote:
> On Sun, 1 Jan 2023 22:14:49 +0100, "Carlos E.R."
> <robin_...@es.invalid> wrote:
>
> >On 2022-12-25 22:12, micky wrote:
> >> sci.electronics.design added.
> >>
> >> Technical qustion about wave valleys and troughs and if two radio
> >> playing the same station will be in phase wrt all frequencies, or if
> >> some will cancel out?
> >
> >If I remember correctly, each amplifier stage inserts a delay and a
> >phase shift in the signal it processes.
> Microseconds. Equivalent to a tiny fraction of an inch at sound
> propagation speed.

Each filter introduces delay. You should know that. It's not microseconds.

> >Each capacitor or coil inserts a phase difference between voltage and
> >current.
> Tiny.

Not when they are in the audio range.

> >So, you can assume that if they are the same model, the should be in
> >phase. Not trivial to calculate.
> >
> >
> >Then, if the distance to the transmitter is one half wave lenght, there
> >will be a 180 phase difference in the high frequency arriving.
> Which won't affect the audio.

Depends on which wavelength he's talking about.

Rick C.

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Subject	Author
Re: Will two table radios always be in phase, out of phase/	Ricky