Abstract: Cross-over modulation between radio frequency circuits and audio circuits is minimized in a wireless portable transceiver by locating all audio circuitry in a first section of the portable transceiver and all radio frequency circuitry in a second, separate section of the portable transceiver. In view of modality considerations in small portable transceivers, an audio signal is either radiated or received in the vicinity of the radio frequency circuitry. Isolation of the audio signal is achieved by routing this signal while in its acoustic form. Since audio signals in an electrical form are not routed around or near the radio frequency circuitry, cross-over modulation does not occur between the radio frequency circuitry and the audio circuitry.

Abstract: A throttle control for use with a return-biased throttle system in a motorcycle or similar vehicle, which includes a cam lever fitted with a cam body having a slidably mounted, spring-loaded internal plunger, which cam body is mounted in the motorcycle throttle housing with one end of the plunger in close proximity to the throttle cable drum and designed to bias against the cable drum and maintain the cable drum and throttle grip in fixed position upon manipulation of the cam lever.