Frequency from 0 to 500MHz. With average power of 15 and for power of 100 . With Resistance of 50 ohms. Standing ratio less than 1.15. For Interphone dummy load antenna testing. DL-30A Dummy Load only, other accessories in the picture is not included! Item Type: DL-30A Dummy Load Model: DL-30A Size: 7.2x3.4cm/2.8x1.3inch Frequency: 0-500MHz Power: 15W(AVG)/100W(for ) Impedance: 50 OHM VSWR: Less Than 1.15 Connector: PL259-M Applicable Models: For -50 -40 RX-503 RX-502 Quantity: 1 Pc Note: 1cm=10mm=0.39inch No retail package. Color:Black Material:aluminum alloy Package Contents: 1 x DL-30A Dummy Load(The words on the product due to different product batches, but it not affect the use) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.