> I cut the RFI Ferrite blobs off of all trash Keyboards and stuff. These > are great Ferrite devices. > > > > But what are they best for?
Bob, Check out this article from Chuck Councilman W1HIS: http://www.yccc.org/Articles/W1HIS/CommonModeChokesW1HIS2006Apr06.pdf He wrote it from the perspective of an HF operator, but there is a lot of useful information in it. Chuck is fairly generous with his time, contact me off list if you want his e-mail address. In my personal experience, equipment vendors are mostly required to test at >30MHz, so it would not surprise me if the pieces you pull off discarded equipment are well suited to VHF/UHF. Since the article was written, ferrite has become easier to obtain in small quantities. Mouser has worked for me - it might be easiest to buy exactly what you need rather than experiment with with whatever the junk box provides. But sorting through junk boxes is fun too! -Joe KM1P _______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
