Consider one of these Diamond Antenna DL30 Series Compact Dummy Loads. Rated from 0 to 500 MHz, these RF loads allow you the opportunity to test your rig without tying up the airwaves with a test carrier. Capable of 15 watts continuous power, or up to 100 watts for short periods, these DL30 Series loads are available with either PL-259 or N-Type connectors. These units present your transmitter with a 50-ohm load and a maximum 1.15:1 SWR across their entire frequency range! DL-30 characteristics: * Frequency: DC to 500 MHz * Rated Power: 15 watts continuous, 100 watts peak * Connector: PL-259 or N-Type (depending on model) * Impedance: 50 ohms * VSWR: 1.15:1 maximum * Dimensions: 30mm Diameter x 75mm Length (1.18 x 2.95 in.) Use them to verify output power, compare your antenna efficiency to a known standard, or with your wattmeter to get tuned up.