![]() All measurement equipment used is NIST traceable. The Model 3121D tuned dipole antenna covers a frequency range of 30 MHz to 1 GHz and its behavior approaches to the theoretically perfect loss-less half-wavelength resonant dipole.Įach 3121D dipole is individually calibrated at 10 meters per ANSI C63.5, using the preferred three antenna method. ![]() ETS-Lindgren has made select physical improvements to the original design assuring optimal performance and years of trouble-free use.ĮTS-Lindgren's dipole offers an accurate standard for precise EMI measurements including FCC and EN compliance testing, site attenuation as described in EN55022 and ANSI C63.4, and antenna calibration as described in ANSI C63.5. Roberts while he was Assistant Chief Engineer at the FCC laboratory. The ETS-Lindgren Model 3121D Tuned Dipole Antennas are virtually identical to the optimally matched, compensated balun design used by Willmar K. The 3121D tuned dipole antenna's behavior approaches to the theoretically perfect half-wavelength resonant dipole.
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