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39 results from messages in loopantennas

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  • Dave, I posted the pics of my old Ramsey shielded loop from '05 plus a couple of later creations in my John's Stacked Toroid Loop photo file. They are a final version of my Stacked Toroid Loop as a Palomar amplified loop head and a 7.5" FSL. Both designs from Everett Sharp. Both work extremely well on LW and MW. Litz would probably help the Ramsey as well a close winding it as well...
    lowalacrity@... Dec 13, 2013
  • Hi Dave, I will repost picture/s of the loop head I made for the Ramsey Signal Magnet. Not sure what happen to it. Long ago, Steve, the moderator suggested putting pics in the files section for better resolution. That may not be the case anymore.. So it will appear in the photos. My latest head is comprised of Everett's Stacked Toroid Loop for LW/MW and is used on a Palomar base...
    lowalacrity@... Dec 13, 2013
  • Rick, More to your actual question, In my experience, I haven't found that much performance improvement when using add-on loops to already high performing radios such as yours. They already have relatively large ferrite loops built in. With a cheap transistor radio, they make a huge difference. Same with the new generation of Ultra Lights, they have small ferrite rods that benefit...
    lowalacrity Jan 5, 2013
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  • Greetings, I recently fabricated one one of Everett's stacked toroid loop sticks as I wanted something high performance and relatively portable. I also wound the 3 litz coils on clear plastic forms to allow for interchangeability. The only difference that might affect performance, compared with Everett's, is the litz wire I used has fewer strands, (180 vs 330). I have copious...
    lowalacrity Jun 26, 2012
  • I have uploaded some pictures of a couple of new plug-ins for my Palomar base amp. They can be found in a new album called amplified air loops. I was impressed at how well the 4" air loop stacked up against my ferrite core heads so i decided to go big. I tried out my new 8" last night and was pleased to find it was worth the effort. It matched the performance of my best litz wound...
    lowalacrity Mar 18, 2011
  • ...Looks like you got what you needed, so, please disregard my suggestions. Good luck with your mag loop... --- In loopantennas@^$1, "lowalacrity" wrote: > > Ralph, > What is the diameter of the main loop? Unless you're looking to use it for specific need or just experimentation...
    lowalacrity Mar 16, 2011
  • Ralph, What is the diameter of the main loop? Unless you're looking to use it for specific need or just experimentation, not to decourage you, but you probably won't get much better results than off the whip. But then, I'm not sure without more info. An amplified loop might be considered? The Degen DE 31 comes to mind. I'm in the process of building a small 8" 20 turn tunable SW...
    lowalacrity Mar 16, 2011
  • Brian, That would be one of my creations, or should I say modifications. It was my own loop "head" coupled to a Ramsey Signal Magnet. It worked well and did an excellent job shielding noise out, (as did the stock rod assembly). Refer to msssages 655 and 686 in this group and various posts from #6-27 in the "ferriterodantennaexperimenters group. Let me know if you need any more...
    lowalacrity Oct 18, 2010
  • > I have a plan in finding ways to improve the LW reception when I get the KA-35 controller cable fixed. I was thinking about making the > ferrite rod antenna bigger so it can pull in better than the 4.5 inch > ferrite rod that it comes with it. > > Is it possible to improve the LW/MW reception with switching out the old ferrite loop stick with a 7.5 inch loopstick? > > Adam E...
    John Stumm Jul 21, 2009
  • --- In loopantennas@^$1, "Aimo Unto Olavi RUOHO" wrote: > > Hello, the Wise ones! > > I sent for ferrite rods from LY2KW in Lithuania and received 48 of > 10mm x 200 mm (3/8" x 8") rods. > > My question is: how to best construct a ferrite loop for lower SW, > the so-called Tropical bands between 60 m to 120 m.b.? > > I imagine, that it would look like a "T" to be able to rotate it...
    John Stumm Mar 15, 2008