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Check the listing for details. 2 5W RF Power Amp for HF VHF UHF FM Frequency Modulation Wireless Applications. Condition: New. Listed at 22.38 USD. 1-1000MHz 2.5W RF Power Amp HF, VHF, UHF, FM, and FM Frequency Modulation Power Amp Module for Wireless Transmission. Note: RF power amp are fragile devices. Before powering on and testing, for ensure that the input and output connections are properly connected and impedance matching is ensured.