This LOT is one RF Bay, Inc. New 270-470MHz 4W RF Power Amplifier, Model Number: MPA-370 with SMA Female Connector. This unit provides 35dB gain, Pout greater than +37dBm with 9V DC power operation. This amplifier designed for 400MHz ISM Band wireless video transmitter amplification.Detail Spec on Web as follows. This item is in the category "Consumer Electronics\Radio Communication\Ham, Amateur Radio\Ham Radio Amplifiers". The seller is "rfextra" and is located in this country: US. This item can be shipped worldwide.