Shenandoah Valley Amateur Radio Club

Category: Antenna

  • ARRL Helps Radio Amateurs Comply with New RF Exposure Evaluation Rules

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    John AE7YH
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    [et_pb_section fb_built=”1″ theme_builder_area=”post_content” _builder_version=”4.21.0″ _module_preset=”default” custom_padding=”9px|||||”][et_pb_row _builder_version=”4.21.0″ _module_preset=”default” theme_builder_area=”post_content” column_structure=”1_2,1_2″][et_pb_column _builder_version=”4.21.0″ _module_preset=”default” type=”1_2″ theme_builder_area=”post_content”][et_pb_image src=”https://svarc.us/wp-content/uploads/2021/12/arrl_logo-150×150.png” _builder_version=”4.21.0″ _module_preset=”default” theme_builder_area=”post_content” title_text=”arrl_logo” hover_enabled=”0″ sticky_enabled=”0″ align=”center” url=”http://www.arrl.org” url_new_window=”on”][/et_pb_image][/et_pb_column][et_pb_column _builder_version=”4.21.0″ _module_preset=”default” type=”1_2″ theme_builder_area=”post_content”][et_pb_text _builder_version=”4.21.0″ _module_preset=”default” theme_builder_area=”post_content” hover_enabled=”0″ sticky_enabled=”0″] From ARRL.org –  ARRL The National Association for Amateur Radio® provides free, comprehensive resources to help radio amateurs ensure they are compliant…

  • Chasing the Backstory of Mountaintop Portable

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    John AE7YH
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  • IARU R1 Records on 134 and 241 GHz DK5NJ & DB6NT

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    John AE7YH
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    New IARU R1 Records on 134 and 241 GHz Amateur Radio Bands Tuesday, March 1st 2022 DK5NJ at the Leipzigerturm (797 m ASL) near Schmiedefeld JO50ON60BJ DB6NT at the Aschberg (913 m ASL) near Klingenthal JO60GJ03RO distance 92,8 km Air temperature 6°C at Aschberg Relative humidity 29% on the Aschberg DK5NJ and DB6NT worked in…

  • Important Changes To EZNEC

    Important Changes To EZNEC

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    by

    Elizabeth W4EHC
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    Last year, Roger Steyaert K7RXV made an interesting presentation to the club on the topic of network analyzers, one of which was a program called EZNEC. He just alerted us to an important announcement from Roy Lewallen, W7EL, about his retirement in 2022 and his release of EZNEC to the public domain. If you have ever…

  • Basic Antenna Principles Using Antenna Modeling

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    by

    Elizabeth W4EHC
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    This program by Mike Mladejovsky WA7ARK was recommended to us by club member Roger Steyaert K7RXV. The presenter is a knowledgeable retired professor. This video starts in the middle of the recording but at the beginning of his presentation.

  • Smith Chart Basics from Keynight Labs

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    Elizabeth W4EHC
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    This video explores Smith Chart basics, and uses that information to learn about the RF performance of a paperclip. Would this make a good antenna, at what frequencies does it resonate? A Smith chart makes this really easy to see.