iFlight Blitz Whoop is a powerful video transmitter designed especially for long-range and freestyle drones. The video transmitter has a large aluminum heat sink and switchable output power of 25/400/800/1600mW. The video transmitter supports 7-34V input voltage and can be powered directly from the battery. Frequency, bandwidth and transmit power can be set using the buttons or conveniently via the flight controller using the IRC Tramp protocol. The VTX table for Betaflight can be downloaded here. As the name suggests, the video transmitter has a 25.5x25.5mm M1.6 mounting holes.