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February 27th 10, 03:54 AM
posted to rec.radio.shortwave
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External ferrite bar for 2-6 MHz?
On Feb 26, 5:06*pm, "bw" wrote:
"bpnjensen" wrote in message ... On Feb 26, 9:44 am, wrote: On Feb 26, 9:54 am, Kevin Alfred Strom wrote: A word of caution! Be extra careful with the existing rod(loopstick). The wires on it are so fine that it may brake off very easily. RShack used to carry thin enamelled wire of various sizes. Experimenting is fun and sometimes the results are much better performers than ready made products. Actually, there is a company called Palomar Engineers in California which speacialized in small loop HF antennas,ferrite cores of various types and rf baluns.Fairly high quality products.- Hide quoted text - - Show quoted text - Thanks, Arthur - I noticed that when I opened the radio up - those connecting wires are no thicker than spider webs. *I certainly agree with Kevin's idea about trying some twists around the internal ferrite; I'm sure it would be quite helpful, but the reason you just suggested gave me pause. Anyway, I think first I will try an external parallel ferrite bar linked to my outdoor antennas, maybe with a variable cap for tuning, and see what happens. *That certainly can't hurt, and who knows? Maybe it'll help...or not! *I noticed a specific ferrite bar item at Stormwise that might be the ticket, with recommended number of turns for various freqs of interest. BJ Several websites have info on this. Both ferrite and larger air core loops. I don't have the links handy, check Bill Bowden Thanks, bw, I'll check that right now :-) |
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