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.