The RF signal and the DC current supplying the amplifier use the cable simultaneously. Check another FM antenna booster circuit diagram. The RF signal is however prevented by LC filters from flowing ...

This means you can be very close to a powerful transmitter and it will still function as a good directional antenna. The current circuit diagram, BOM and source code are all available on [Byon’s ...

The circuit diagram in Figure 1 reveals the secret: dual-gate MOSFETs in positions T1 and T2. The first of these, T1, is configured mainly for low noise and antenna matching and the second, T2, for ...

[Edit: Fixed the misspelling of NMEA in our diagram. (accursed nyquil ... and support for an external antenna. By adding a power injector circuit, we can use a standard external active antenna.