Re: TI-H: REAL radio-link


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Re: TI-H: REAL radio-link




Look in the catalog section.

>where exactly on their web site would I find this chip?
>
>-----Original Message-----
>From: Grant Stockly <gussie@alaska.net>
>To: ti-hardware@lists.ticalc.org <ti-hardware@lists.ticalc.org>
>Date: Monday, February 23, 1998 6:53 PM
>Subject: Re: TI-H: REAL radio-link
>
>
>>
>>making a radio link wouldn't be hard.  First get a chip from
>>www.national.com.  Look arround and find the chips that are made to
>>transfer data...  There is a chipset that uses 2 wire SPI serial...
>>
>>If you can't do that then get 2 freqw and a regular chip.  Then get some da
>>ad converters.
>>
>>>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!
>>>
>>>New idea: Could a crystal generate a frequency high enough that the data
>>>can be multiplexed fast enough to avoid missing data???
>>>
>>>What about 4 separate frequencies SendTip, SendMid, RecTip, RecMid. You
>>>could have a switch to select whether your calc is 1 or 2. It is a
>>>little less "automatic", but by having the calcs set differently, you
>>>could send the data on two frequencies and recieve it on four
>>>frequencies. Maybe a little plug could be added, or dip switches used to
>>>select or switch crystals! You would carry two of the same crystal, and
>>>let the person you want to trancieve data with borrow one, or have
>>>several preset frequencies inside set by a switch. It would be VERY
>>>dificult to manualy tune it with a knob or something like that.
>>>
>>>Richard Piotter
>>>richfiles1@hotmail.com
>>>
>>>The Richfiles TI Page
>>>http://www.geocities.com/SiliconValley/Lakes/5081/Richfiles.html
>>>
>>>
>>>______________________________________________________
>>>Get Your Private, Free Email at http://www.hotmail.com
>>
>>
>>