| Power supply electric voltage: USB 5V |
| Electric current:10~20mA |
| Work frequency: VHF 170-230MHZ |
| UHF 470-860MHZ |
| Increase a benefit: 30 dB |
| Voice coefficient:≤ 3 dB |
| Output resistance:75 Ω or 50Ω |
| Halt wave:≤ 3 |
| Line:3M conector: IEC |
| Work temperature-20 ℃∽+85 ℃ |
| Keep temperature-40 ℃∽+90 ℃ Power supply: via DTV set top box (DC 5V/40mA) or by TV USB port (usb cable supplied) |




