New Toy - General Radio Model 1650a Impedance Bridge
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Woo Hoo! A new toy joins the shack's boat anchor collection. I used this device when I worked at Edo Western many years ago. See this page for a complete description.
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
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...
I enjoy working QRP and, usually, run 5 watts when working CW or SSB. Sometimes, I get grumpy and turn my power down as low as I can to 792 mW on my ICOM 7300. I figure, if they cannot hear me, they need a better antenna. HI HI There are 1000 Mile Per Watt awards that are offered to Hams that work stations on low power. I have a paper certificate around here - somewhere. I have learned that 1000 miles per watt is Child's Play. As this article shows, there are two ways to reach out and touch someone with less. Turn your power down and you will see. Fig. 1, Typical 1000 Miles/Watt Award The better your antenna, the better your chances. It has been said, "If you have $100 to spend on your hobby, put $90 into your antenna, $9 into your receiver, and $1 into your transmitter. Recently, I setup a CW 10 M beacon on 28.2365 MHz. It drives a 20 M Vertical tuned to 10 M and is on-air during daylight hours when I am not using the rig. I have been running it at about 5 watts (QRP) with d...
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