Revolutionary dual-band transmitter design with fast switching greatly extends channel coverage and brings more possibilfes. Eficient PA and power calibration to power consistency across all channels. Metal triple shel structure and large centrifugal fan provide suffcient heat dissipation. Frequency precision:200KHz(Typ.);Channel customer:8+48CH;SIN(For 3MHz) 70dBc;Modulation type:FM;Antenna Port:SMA 50 Ohms;Frequency control:PLL;Video input level:1V0.2Vp-p(typ.);Frequency stability:100KHz(Typ.);Operating Temperature:-10-+70 Power Supply:DC 7-30V Control Protocol: Tramp Wiring& Settings:The antenna must be installed before use! The frequency of the antenna must correspond to the SMA interface definition! Controlled using a single button, the button integrates RGB lighting,blue for band, red for channel, and green for power level. When there is no operation. theRGB LED blinks cydically. the number of times the RGB blinks represents the current VTX status (when the green LED is always on,the VTX enters PITMODE). Long the button to enter VTX setting. at this time the RGB lights are lit altemately. release the button under the corresponding color light to enter the corresponding function seting. At this time, short the button to adjust the value. For setup via the flight controller, connect the DATA pin and use the protocol. Transmitter Antenna:The kit contains 2 antennas, red for 5.8G and gray for 4.9G. Polarzaton:RHCP Gain:1.8 dBi Bandwidth:4990-5200/ 5658-5945MHz V.S.W.R: Less than 1.5 Radiation pattern:Omni-directional Cable:RG402-SMA Due to different batches, there may be differences in product appearance and printed text, which not affect use. Colour:Black Material:Metal + Plastic Package Contents: 1 x Video Transmitter Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.