Analog Video image Modulator PAL CVBS input UHF frequency
1. Do you have an Analog video image modulator, PAL standard, CVBS input, UHF frequency 470-800Mhz, 0dBm?

Yes, Please check the below model.
3.3-5V power supply
Mobile phone TV function
Regulator TV can directly search and receive channels
16 channels can be installed and tuned
strong penetrating power
19x15.5x3.5MM.
2. What is the demodulator receiver for your modulator?
At UHF frequency, regular portable analog tv can be the receiver.