This was a system for drive-by reading of utility meters in the USA and was tested to FCC part 15 rules which we arranged with a UK test house. The receiver is featured below but the other components of the system were a transmitter and a field configuration device for it.
The receiver pictured was a battery operated handheld unit. It featured high sensitivity with good dynamic range
and operated in the 915MHz band. It incorporated on-board data decoding and storage for download via a serial link to a computer.
It also featured firmware that allowed for a large number of parameters to be configured via the serial link making the unit
very flexible in use, in addition, the firmware was field upgradeable via the serial link
For portable use it used a built-in rechargeable battery (with an on-board fast-charge circuit) and could be operated or recharged from the vehicle's cigarette lighter socket.
This unit was housed in a custom designed, sturdy aluminium enclosure.
Mostly surface mount technology was used with a 4 layer board.
The matching transmitters were designed in high quality plastic cases and sent the meter reading (water, or gas) and various status
messages to the receiver.