With the ability to make changes via FPV this is by far the best product. It will be hard for me to use another product.
Tramp HV 600mW 5.8GHz Video Transmitter
The all new Trampoline HV (TrampHV for short) is a tiny video transmitter with a huge set of features! At only 4 grams, it promises to solve the majority of issues and delays that race events have been experiencing.
Pit Mode: Pit mode transmits a tiny amount of power on a pre-defined frequency to allow for quad setup at a race event without disrupting the show.
Touch ’n’ Race: Transmitters are placed in Race mode upon arrival at a race event, and remain in that mode until the event is over. Race directors can, without powering up a model, define the frequency and power output of the transmitter in 5 seconds flat before a race starts. This means more practice runs, more qualifiers, and races which start and finish on-time
LapRF Compatible: LapRF uses the energy emitted by the 5.8GHz transmitter on the quadcopter to trigger a lap timer sensor.
Anti-Glitch: Anti-Glitch is a new technology which allows video transmitters to power up cleanly on their assigned channel without affecting neighboring channels.
Calibrated Power: Each and every TrampHV is factory calibrated to ensure precise power outputs, especially at the critical low-power race levels.