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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  • Weather
  • RSS 73′s.org Ham News Feed!
    • HamBrief 72 February 26, 2012
      Chris Matthieu (N7ICE) interviews Arthur White (N4TRQ) about his historic hamradio tweet through the International Space Station (ISS) and 73s.com to Twitter! https://twitter.com/#!/n4trqjedi/status/172767414616985600 […]
    • HamBrief 71 February 19, 2012
      Chris Matthieu, N7ICE, demos the 73s hamradio callsign lookup phone number (Voice and SMS) also accessible via an autopatch and a radio! […]
    • HamBrief 70 February 12, 2012
      N7ICE experiments with a FLEX-1500 SDR (software defined radio) from Flex Radio Systems for the first time. […]
    • HamBrief 69 January 29, 2012
      Chris Matthieu, N7ICE, demonstrates how to tweet from a ham radio using APRS and 73s.com! […]
    • HamBrief 68 January 21, 2012
      Chris Matthieu, N7ICE, demonstrates how to connect the JawBone Jambox to a Yaesu VX-8R using Bluetooth with voice-activated VOX! […]
    • Hambrief 67 June 9, 2011
      N7ICE gets a DSTAR update from N7GOC […]
    • 73s.org - HamBrief 63 September 1, 2010
      Jim, KH7WW, shows off his new backback portable HF rig while he talks to the BuddyPole guy! […]
    • 73s.org - HamBrief 62 July 19, 2010
      Williams Arizona HamFest 2010 […]
    • Hambrief 61 June 14, 2010
      QRP at Hamfest with KH7WW! […]
    • 73s.org - HamBrief 59 April 11, 2010
      Devry HamFest! […]
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  • RSS Antennas by N6LF
    • Elevated radial ground systems, some cautions! February 13, 2012
      Elevated grounds systems are frequently used in place of wires on or in the ground under a vertical. This kind of ground system can work very well but when there are only a few radials in the elevated system it... […]
    • Short antennas for 160m and 600m February 13, 2012
      Often it's not possible to erect a full 1/4-wave vertical, especially on 160m or even more so at 600m. It appears that we will be getting a 600m band 472-479 kHz where the wavelengths is about 2000'. That makes the... […]
    • 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... […]