Abstract: A traffic information warning system for conveying traffic information from a traffic advisory site to a vehicle is disclosed. The traffic warning site comprises an emergency vehicle, a roadside hazard, or the like. The system comprises a transmitter adapted for placement at the advisory site and a receiver adapted for placement at the vehicle. The transmitter includes a first oscillator for transmitting a first carrier signal having a first carrier frequency and a second oscillator for transmitting a second carrier signal having a second carrier frequency. The first carrier frequency and the second carrier frequency are spaced apart by a predetermined frequency difference. The transmitter also includes a modulator for modulating both carrier signals with an identical modulating signal reflective of a traffic situation.

Abstract: A base unit antenna for a cordless telephone system where the cordless telephone system comprises a base unit coupled via wires contained in a telephone cord to a telephone distribution system and a handset coupled to the base unit by a duplex radio communication link. The base unit includes a base unit antenna for transmitting and receiving the duplex radio communication with the handset. The antenna is preferably integrally contained in the telephone cord, but spaced from the telephone wires therein distribution system.

Abstract: An antenna internally contained within a housing of a cordless telephone is configured generally as a plate disposed opposite the earphone transducer, and away from the user's face in position for normal use. The antenna is disposed to lie generally vertically, and is counterpoised against a generally vertically disposed circuit board. Configuring the antenna generally as a plate and placing it outboard away from the user's face minimizes detuning effects during normal handling in use. Optional side extensions to the plate increase the antenna capacitance. An optional counterpoising shield may be interposed between the receiver-transducer and the antenna plate to further minimize detuning effects. Mode switches are disposed in a position on the handset remote from the antenna to further minimize detuning effects during switching operations.