1.5-30MHz Shortwave Power Amplifier 100W for QRP Radio Power Boost. HF band shortwave power amplifier! Note: The amplifier only has no SWR protection circuit. Please use with the power SWR meter when the guest. Output power: High-grade not less than 100W (7MHz and 14MHz and 21MHz power 120W or more).Working mode: A has class (AB class). With transceiver status indicator, temperature warning indicator. Automatic bias control, automatic transceiver conversion circuit. Internal reserved large enough LPF installation position. Convenient for users to upgrade! If you need other special input power requirements, you can contact customer service, we will try to achieve the requirements of guests, but also need to increase the relevant costs! Please leave note for your special request e. Please do NOT leave negative or neutral feedback without any contact. We care about our valued buyers, if you have any questions, our Customer Service staffs will be very glad to help you. This item is in the category "Consumer Electronics\Radio Communication\Ham, Amateur Radio\Ham Radio Transceivers". The seller is "poe-28" and is located in this country: CN. This item can be shipped worldwide.