Kits A600 HF/VHF 600W linear amplifier kit F1500 160m-4m 1500W Low Pass Filter kit B1500 RF amplifier Backpanel Unit kit FL868 Narrow Band-Pass Filter for the 868MHz band P868 Low Noise Receive Amplifier with TX Bypass for the 868MHz band SP900 2-way RF Splitter for 810MHz-960MHz