During the 1980s a lot of consumer devices suddenly got a lot smaller as large-scale integration using semiconductor ...

Specimen is a regenerative detector and two-stage audio amplifier utilizing three UV-199 .06 ampere tubes (missing). Panel controls include wavelength tuning and regeneration. Unit sold for $50 in ...

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Radio frequency fingerprint identification (RFFI) is an emerging device authentication technique, which exploits the hardware characteristics of the RF front-end as device identifiers. The receiver ...

Detection and Analysis of GPS L1-Band Radio Frequency Interference Using Spaceborne Global Navigation Satellite System Reflectometry Receivers ...