Model 101C Data Demodulator
This card plugs into an ISA slot which suggests it only uses the slot for power, as the Amiga's ISA slots are not active. The card was usually supplied with a custom TV programming system called the Sneak Prevue, based around an A2000 so is probably only of real use with this system. The card is some sort of data demodulator. It takes baseband video and extracts the encoded data stream and creates a contact enclosure for the local inserts of adverts etc, via the use of the Channelmatic VCR controller. The card itself says control data and EPG data on separate traces.