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RF modulator is the part of a transmitter that converts an audio and/or video (or a data stream) signal into a radio frequency signal.
An rf modulator is commonly found inside such things as a video recorder/player or dvd player to allow it to be connected to an analogue tv through the aerial connection and your rf modulator is a stand alone type designed to do exactly that.
First of all, press the Caps Lock button, it really helps. Make sure that your PC's USB port is actually a USB 2.0 (or 3.0). There are no options to increase the speed of a flash drive, it is determined by the microcontroller used in the drive.
well an 8051 has a built in serial port BUT is VERY sloooow. 1. how far? A.short range you could use blue-tooth. B. longer range: There are some wireless modules in Nuts&Volts(magazine) C. go with a serial /ethernet adapter (very small) and then use a air card or cell phone.. FINS