ELECTRONIC CIRCUIT

There are two LCD shutter adapters, which carry or generate the control signal for the LCD shutter glasses. There is the RF modulator, which modulates the NTSC video onto a television channel, and finally the VGA converter, which converts the NTSC video format to VGA format for display on a VGA monitor.
TV adapter
This adapter consists [...]

The circuit is very simple, it just has three transistors, but the transistor types have been changed for VHF/UHF transistors. You can use 2N2369, BSX19 or BSX20, or any small signal transistor with an “ft” of typically 400MHz or more. The transistor DC biasing is a little more tolerant to varying [...]