The Daiwa CS-201A is a heavy duty two position coax switch, good for use through 600 MHz, with low insertion loss. Handles up to 1500 watts. The switch grounds the unused position.

Specifications

frequency limit: 600 MHz. 
power rating: 1500 watts (DC-30 MHz), 1000 watts (30-150 MHz), 500 watts (150-600 MHz). 
VSWR: <.12 dB 
insertion loss: <.2 dB. 
isolation: 60 dB. 
impedance: 50 ohms. 
connectors: SO-239. 
size: 2.2"H x 2.8"W x 1"D. 
weight: 15 ounces.