NTS

This page provides information and links related to the ARRL National Traffic System.

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Common Mode Currents

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 I was explaining to a fellow ham the other day about the need for baluns in the shack. For my purposes, I have a balun on my antennas that are naturally unbalanced. For example, feeding a dipole directly with a coax creates an unbalanced condition. This causes common mode currents to flow on the outside of the coax feed line. This causes the coax shield to radiate into space - most commonly, into your neighbors stereo system. To my surprise and delight, I ran across a YouTube video published by Gregg Messenger - VE6WO where he shows how common mode currents can occur on a feedline. How To Build A Terrible Antenna! Common Mode Current Experiments
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The Richard Meiss - WB9LPU - Telegraph Keys

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In the world of Amateur Radio, there are many hobbyists that combine their love for radio with a love for fine machinery. Here is one example of that combination. Richard Meiss, WB9LPU, has been designing and making home brew keys since 1998. The RotoTwin key, shown in the video below, is one of the most unique. But, his skill does not stop there. Check out the links below the video.   REFERENCES: WB9LPU YouTube Videos (it will make you weep!) WB9LPU's Key Corner W1TP Museum of Telegraphy (Richard Meiss Keys)
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Running A Beacon During Idle Time

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Table Of Contents Introduction Beacon List Beacon Station If You Hear Me Activity Log Introduction I was playing radio the other day and copied a 10 metre beacon on 28.1995Mhz.  I copied VVV VE3IIM/B EN94 73.  Super strong, no QRM and nil QRN. 599. S Meter S1 to S3. I looked him up on QRZ (Tim Smith, Hanover, ON N4N 2R5 Canada) and responded to his request for reception reports.  He responded and we had a nice email chat. Tim was very helpful and gave me some useful research links.  This gave me the idea of running my own beacon using my ICOM 7300 memory keyer capability. I setup a memory of VVV DE W7YV/B W7YV/B DN40 K with a 4 second repeat interval. I am sending this on 10M or 20M. Have not tried 40 or 80, yet, due to antenna issues. The results are intriguing. I was contacted by Jerry, AC5JM, the IARU Region 2 HF Beacon Coordinator informing me that I was not using a coordinated frequency. He provided a list of "clear channel" beacon freq...
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