The Larsen KD4-270 is a respected dual band 2 meter/70 cm HT antenna. It operates as a full 1/4 wave on UHF and as a loaded 1/4 wave on 2 meters. Frequency range is 144-148 and 440-450 MHz. It has an attractive and durable PVC finish. Silver plated contact pin. Approximately 9 inches. Terminates to an un skirted BNC plug.