This RF Amplifier Board is MADE in the USA and includes 2 BLF188XR LDMOS Transistors and a Copper Heat Spreader (drilling and tapping is required). The transistors used are extremely rugged and can withstand an SWR mismatch for 65:1 or greater at all phase angles. The PC board is professionally fabricated and is designed to produce a very high efficiency (greater than 75%). The bias current is preset to 500mA and can be readjusted by use of 2 independent potentiometers. The board dimensions are 4" wide by 7.5" long.A large aluminum heat sink (not included) and forced air are required for cool / reliable operation. The board ships FULLY ASSEMBLED and TESTED with schematic, installation guidelines, and operating setup instructions. Amplifier Topology is Push / Pull. 3000 watts PEP Output Power (High Power Output). Operating Voltage 50 - 56 volts DC. Current Draw 40 - 50 amps. Input power 1.0 - 1.5 watts (depending on radio used). Watch my video to see the RF Amplifier in operation. This LDMOS amplifier is intend for use by suitably Licensed Amateur Radio Operators only and is not intended for Citizens Band (CB) or any other radio services where local and federal regulations prohibit its use. By purchasing this RF Amplifier you are agreeing to all terms and conditions stated herein. This amplifier used high level of electrical power. The item "LDMOS RF Amplifier 3000 Watt PEP 1.8-54 MHz with BLF188XR Devices & Copper Plate" is in sale since Sunday, November 5, 2017. This item is in the category "Consumer Electronics\Radio Communication\Ham, Amateur Radio\Ham Radio Amplifiers". The seller is "cca_car_bvt5zjxn2n" and is located in Suwanee, Georgia. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Chile, Colombia, Costa rica, Panama, Trinidad and tobago, Guatemala, Honduras, Jamaica, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Ecuador, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Peru, Pakistan, Paraguay, Reunion, Viet nam, Uruguay.