[600MRG] Ferrite antennas

[Marshall Cross]

We make MF and H F ferrite loaded antennas for the government. There are hundreds of published papers on the subject. One lesson we learned 10 years ago is that efficient rod cores cannot be made by placing toroids next to each other in pvc pipes. We purchase our cores from National Magnetics in PA. Ferrites that are used as common mode chokes often have a high loss tangent so both mu prime and mu double prime are the two most important parameters to consider when selecting the best ferrite rod for the band of interest. If you are interested in experimenting with ferrite loaded receive antennas, let me know and I will Xerox some papers and textbook chapters for you. 73, Marshall, W1HK, #41.

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> On Feb 15, 2016, at 12:33 PM, Brian Pease <bpease2 at myfairpoint.net> wrote:
> 
> I work with ferrite rod antennas a lot, and can give some advice. See the website http://www.stormwise.com for antennas and info. There is a chapter on ferrite rod antennas in the /Ferromagnetic Core Design & Application Handbook /by Doug DeMaw, W1FB published by MFJ.  Mine is the second edition, 1996.
> 
>> On 2/15/2016 12:10 PM, david vanhorn wrote:
>> I am looking for a good reference on ferrite rod antennas.  Something like
>> the ARRL antenna book but focused on ferrite antennas.
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