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Programming $10 Event Radio
Paul Dow (Remove Caps in mail address) wrote:
I'm leaning toward John's idea that they use a low power transmitter to rebroadcast certain channels. I agree. |
#12
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Programming $10 Event Radio
On Thu, 24 Aug 2006 10:02:20 -0400, "Paul Dow (Remove Caps in mail
address)" wrote in IjiHg.5888$SZ3.2587@dukeread04: It's all analog circuits except for a CD9088CB integrated circuit. I haven't had much luck finding a data sheet for it. Some clues he http://translate.google.com/translat...3Doff%26sa%3DG Experiments with some euro expensive UKW - radio - scanner (only for mini headphones) In these cheap devices is high-quality (phase Locked loop), PLL - chip (e.g. “CD9088CB”), which one can adapt also for other frequencies, approximately as detector for FE - resonances (narrow-band Rauschspektren etc.) Particularly favourably even if the radio still another LCD - frequency announcement has. Data sheet and circuit for “TDA7088T” (identically constructed with “CD9088CB” and “SC1088”) (pdf - 100 KB) http://www.chipdocs.com/pndecoder/da...AN/SC1088.html Partname: SC1088 Description: FM receiver circuit for battery supply Manufacturer: Package: SOP Pins: 16 Oper. temp.: -10 to 70 Datasheet: PDF (184K). Click here to download Download SC1088 data sheet he http://rds.yahoo.com/_ylt=A0geutsq1O1E._0AP45XNyoA;_ylu=X3oDMTE3YXQzN2w 1BGNvbG8DZQRsA1dTMQRwb3MDNARzZWMDc3IEdnRpZANGNzU1X zExMQ--/SIG=12f22f4sr/EXP=1156523434/**http%3a//matthieu.benoit.free.fr/sc1088.pdf%23search='SC1088' http://rds.yahoo.com/_ylt=A0geuuZS1....actDS=Start s |
#13
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Programming $10 Event Radio
Paul,
Can you take a picture of the chip? It'd be easier to identify that way... girmann Paul Dow (Remove Caps in mail address) wrote: The thing is easier to open than I thought. Just 2 small philips screws. I thought the case was glued. The only switches are the volume/power rotary switch/pot, and the two up/down/mode changing micro switches. It's all analog circuits except for a CD9088CB integrated circuit. I haven't had much luck finding a data sheet for it. Only wholesale sites that want to sell me 100,000 units. The manufacturer's logo is a triangle with _____ | | | | | | | |___|___| inside. I'm leaning toward John's idea that they use a low power transmitter to rebroadcast certain channels. B A R R Y wrote: Are there any "DIP" switches inside? These look like plastic blocks with a row of tiny rocker or slide switches. |
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