Recording setup is not controlled by vex. Data is recorded by a dbbc3 with our internal setup scripts. It follows the following format:
Stream 1: DBBC3 IF A (4*32 MHz usb channels, X-pol) → bbc01-04: 4784-4816, 4816-4848, 4848-4880, 4880-4912 MHz
Stream 2: DBBC3 IF B (4*32 MHz usb channels, Y-pol) → bbc05-08: 4784-4816, 4816-4848, 4848-4880, 4880-4912 MHz