GigActiv GA3005 - Extreme Wideband Active Antenna - Bonito Hamradio
Scanning/Receiving Antennas | Moonraker
WAN-97A Active Nomad Base Antenna | Scanner Master
Low Freq. Antennas
Amazon.com: MLA-30+ Loop Antenna, 100kHz-30MHz Active Receiving Antenna, Rainproof Loop Antenna for HA SDR Short Medium Wave Radio, with 10m Feeder,Built-in Low Noise Amplifier,for Rooftop,Balcony : Electronics
Active Antenna AA-7 HF/VHF/UHF, 3-3000MHz
Cross Country Wireless Active Antenna
Amazon.com: Bingfu VHF UHF Ham Radio Police Scanner Antenna Amateur Radio Mobile Radio Scanner Antenna Magnetic Base BNC Male Antenna Compatible with Uniden Bearcat Whistler Radio Shack Police Scanner Ham Radio :
Multicouplers
Simple Active antenna in SW/MW/FM bands - ElecCircuit
Active HF Customizable Loop Antenna for Portable Scanner Radio Receiver | eBay
Amazon.com: MFJ-1020C Indoor active antenna, HF : Electronics