Specification: Impedance: 50 Ω Frequency range: DC - 160MHz Maximum transmitting power: 100W RF induction threshold: Less than10MW (1.8mhz-30mhz test) Opening time: Less than 20ms / release time: Less than 190ms Insertion loss: Less than 0.3dB @ 144mhz (typical value is 0.2db) RX isolation: 38dB @ 144mhz (typical 40dB) Gas discharge protection Power supply: 13.8V DC 200mA Colour: Black Material: Aluminum Alloy Package Contents: 1 x SDR Transceiver 1 x SMA to SMA Connecting Line 1 x PTT Control Line 1 Cord (Due to different product batches, the appearance , which does 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.