Disclosed is a power supply circuit for vehicles, which can continuously supply a constant voltage without a complicated circuit configuration, even during a time when a surge voltage is applied. The capsules contain bubbles of air, oxygen, andor other gas surrounded by a water soluble shell or membrane of a suitable substance, e. The support includes a handle for simultaneously grasping the grip of a long gun with one hand, enabling the individual to support the shield and the long gun by the one hand. Advantageously, this light strand may be hung permanently and utilized year-round for major holidays and other suitable occasions. This may be accomplished by providing a host device having relatively short-range communications circuitry integrated therein, which circuitry may be operative to communicate with relatively short-range communications circuitry of a multi-protocol or long-range communications device that also includes relatively long-range communications circuitry. The reconstructed waveform can then be conventionally mixed and demodulated to extract useful signal information with enhanced receiver fidelity and sensitivity.