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Alive exposed dipole antenna | 5 dBd | N-Male interface | Cardioid | 136-174 MHz | Primus Electronics
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Building a cardioid loop antenna with a Cross Country Wireless Loop Antenna Amplifier + by Chris Moulding G4HYG
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Building a cardioid loop antenna with a Cross Country Wireless Loop Antenna Amplifier + by Chris Moulding G4HYG
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Building a cardioid loop antenna with a Cross Country Wireless Loop Antenna Amplifier + by Chris Moulding G4HYG
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The Loop on Ground (LoG): A Compact Receiving Antenna with Directional Capabilities › AN-SOF Antenna Simulation Software
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Figure 3 from A low-profile, compact, wideband antenna array with cardioid-shaped radiation patterns in the azimuth plane | Semantic Scholar
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