N6AQ News
  • Vertcage 006

    80 Meter Vertical Cage Antenna

    Posted on November 2, 2011 | 3 Comments
    Today I finished the vertical portion of my 80 meter vertical antenna. This antenna shows lowest SWR at 3.810 and is about 175 to 200 khz wide. I can not give exact specs yet because the I still have to put down the ground radials....

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  • gs35b

    GS35-B x 2 Project The Russian Hammer!

    Posted on July 24, 2011 | No Comments
      I have started my 2x GS35b amplifier project. I had the sheet metal custom cut and bent to my specifications and shipped to me. The 19′ Rack is a Middle Atlantic Products cabinet that was donated to me by a fellow ham.  I would...

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  • RSS Antennas by N6LF
    • Some comments on chokes for 160m GP verticals December 11, 2011
      Recently I was asked about air-core coaxial chokes to be used for feedline isolation on a 160m ground-plane vertical. The following are some comments I made: Download 160m common mode choke […]
    • comments on elevated radials February 27, 2011
      I recently sent a note to the QST technical correspondence editor at the ARRL concerning the effect of radial system asymmetries in elevated radial systems. You can read this letter at: Download December 2010 letter to QST technical correspondence .... […]
    • ground systems for DXpeditions January 18, 2011
      I received an query from Bill, N7OU, regarding ground systems for multi-band verticals over saltwater. My reply to him can be found at: Download Seawater ground article . 73, Rudy […]
    • Relation between vertical height and radial length March 6, 2010
      In one of my earlier posts I had some information on the relationship between vertical height and optimum radial lengths. That information was buried in a larger document discussing several other items an was not that easy to find, so... […]
    • QEX letter to the editor February 16, 2010
      I recently sent the attached letter to the editor of QEX. It may answer some questions and correct some incorrect figure captions: Download QEX letter to the editor 1 […]
    • Series of QEX articles on ground system experiments December 31, 2009
      Last year I posted results from a series of experiments on ground systems for vertical antennas. That series of reports was converted with some modifications into a series of seven articles in QEX magazine. The ARRL has kindly given me... […]
    • New 600m station at WD2XSH/20 November 5, 2009
      Last August the FCC renewed and expanded the license for the 600m experimental group so for this new season I have rebuilt my antenna and completely redone the station. The following is a description of the current antenna and station... […]
    • A large ID clamp-on RF current transformer June 16, 2009
      Earlier this year I posted a description of a simple clamp-on RF current transformer. Since that time I have updated the design with a much larger ID and the core held in a spring-clamp that allows easy on/off in the... […]
    • Back to NK7U for more tests June 16, 2009
      Earlier I posted a report on the work done last October on the 80m 4-square at NK7U. After that work there were still many unanswered questions so I and W2VJN went back to NK7U at the end of May to... […]
    • An example of the effect of tower coupling on an array March 15, 2009
      It's well known that a nearby tower can affect the performance of a vertical array but I haven't seen any articles which give an actual example. Last fall I made such measurements on an 80m 4-square which clearly show just... […]