I need a 6~20km long-range wireless HDMI video transmitter and receiver

Hola!

Which model to use when transmitting 1080 video and audio
over a distance of 6-20 km?

Requires the ability to program the parameters of the transmitter and receiver

COFDM
Rang de freqüència 280 – 300 MHz
RF impedance 50 ohms
Connector RF: grau de distància opcional
Retard inferior, el retard mínim d'extrem a extrem és de 250 ms
128-xifrat i desxifrat AES de bits

TX
– Transmit power 15 – 25 W
– Input video:1Vp-p,75ohm
– Input audio: estèreo
– Video program format: MPEG-2
– Input video 1080 50jo, 1080 60jo, 1080 24P, 1080 25P, 1080 30P, 1080 50P, 1080 60P, diversos modes són adaptatius.
– Video format: NTSC, PAL es pot configurar
Temperatura de funcionament : -20 °C ~ +50 ° C

RX
-94dBm at 8M
imatge de vídeo: 1080
Audio output mode stereo unbalanced 300 / 200mv
Temperatura de funcionament : -20 °C ~ +50 ° C

what is the price of such a transmitter and receiver?

According to the above demand, the below model is recommended.