Re: TI-H: REAL radio-link
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Re: TI-H: REAL radio-link
In aviation naviation there is a system called VOR (VHF omnidirectional
range). I uses a AM signal and a FM signal at the same carrier frequency to
determine where it is.
It relatively low frequencies that are used. A 30Hz AM is modulated on top
of the 30 Hz FM at a carrier frequency of 9960Hz +/- 480Hz to get the FM
variation
-----Original Message-----
From: Richard Piotter <richfiles1@hotmail.com>
To: ti-hardware@lists.ticalc.org <ti-hardware@lists.ticalc.org>
Date: 24. februar 1998 23:43
Subject: Re: TI-H: REAL radio-link
>
>>> IS it possible to have one line modulate the amplitude and the other
>>> line modulate frequency. Then have a frequence counter and a level
>meter
>>> test the frequency and amplitude. never mind, I just realized why
>that
>>> would not work!
>>
>>
>>Wait a minute, why wouldn't that work?
>
>cause if the frequency and the amplitude modulate, then where is your
>carrier wave? It would look like plain old static interference, and I
>have no clue how you would integrate an AM and an FM reciever and
>transmitter together to filter noise from noise! I'd call that nearly
>impossible!
>
>Richard Piotter
>richfiles1@hotmail.com
>
>The Richfiles TI Page
>http://www.geocities.com/SiliconValley/Lakes/5081/Richfiles.html
>
>
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