Triband vehicle antenna

摘要: An antenna for simultaneous connection to a citizen's band transceiver, an AM receiver and FM receiver, particularly suitable use on vehicle such as automobile. The proper is center-loaded upstanding rod which, in the preferred form, telescopes downwardly retracted position where it does not protrude above ground plane. connected T-connected open stub transmission line resonant relatively high impedance signal-carrying line. former has inductive reactance which offsets capacitive of short effective length frequencies. substantially half wave so reflect at its far end equal present T-connection. also that provides action transforming low T-connection or base CB higher impedance, 50 ohms, Finally, line, because characteristic very capacitance therefore tend load radio. input terminal splitter containing circuits are turn two lines, one leading transceiver other AM/FM