I was using this until last November! I believe it was putting out a decent amount of power. However, since I don't have an environment to verify its operation, its functionality is unconfirmed. This is an old piece of equipment, so I cannot offer any guarantees. Please understand that it is sold as-is, with no returns. WHISTAR Power Linear Amplifier 800 Features an RF connector and a power switch for signal amplification. - Brand: WHISTAR - Model: Power Linear Amplifier - Meter Display: With output meter - Connection Terminals: RF connector - Power Switch: With power switch Thank you for viewing.