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DF9CY - EZNEC Simulation files collection - Antenna modeling files for EZnec and 4nec2. ARRL antenna modeling files - .NEC, .YAG, and .EZ files contributed by various sources. KK4OBI - Bent and other dipole models - This web site is devoted primarily as a resource for amateur radio operators to see what happens if they bend a half-wave dipole ...
This page was last edited on 10 January 2025, at 16:10 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
German physicist Heinrich Hertz first demonstrated the existence of radio waves in 1887 using what we now know as a dipole antenna (with capacitative end-loading). On the other hand, Guglielmo Marconi empirically found that he could just ground the transmitter (or one side of a transmission line, if used) dispensing with one half of the antenna, thus realizing the vertical or monopole antenna.
The J-pole antenna is an end-fed omnidirectional half-wave antenna that is matched to the feedline by a shorted quarter-wave parallel transmission line stub. [5] [1] [6] For a transmitting antenna to operate efficiently, absorbing all the power provided by its feedline, the antenna must be impedance matched to the line; it must have a resistance equal to the feedline's characteristic impedance.
Isolation transformer. In classical transformers, there are two electrically separate windings of wire coils around the transformer's core. The advantage of transformer-type over other types of balun is that the electrically separate windings for input and output allow these baluns to connect circuits whose ground-level voltages are subject to ground loops or are otherwise electrically ...
In 1978, Petit Guillaume, one of the sons of the Seznec spouses, reportedly told one of his nephews that on the day of the tragedy (he was then 11 years old) he had heard Pierre Quéméneur making advances to his mother and having seen him on the ground, at his mother's feet, perhaps hit in the head with a candlestick.
Vezneciler Hamamı is a historic hamam located in the UNESCO World Heritage Site of the historic area of Istanbul. The hamam was built by Sultan Bayezid II in 1481. [1] [dead link ] It is located slightly north of the larger Bayezid II Hamam.
Vezneciler is a station on the M2 line of the Istanbul Metro. [2] The station is located under Şehzadebaşı Street and 16 Mart Şehitleri Street in the historical Fatih district of Istanbul.