I have built RF chokes for 7MHz using 31 mix ferrite cores and RG-400. Now
I want to build one for my 50 MHz LFA. I asked google which mix to use and
one of the responses had this statement:
"For RFI common mode suppression use, mix 31 is effective from 1-300 Mhz,
mix 43 works from 25-300 Mhz, Mix 61 is for 200-2000 Mhz, and mix 77
favors.1-50
MHz. These frequencies are those of the interfering signal to be
eliminated, not the operating frequencies of the equipment to be protected.
See Mix Selectionfor other applications."
I don't understand the second part of this statement. Am I to use mix 31
for my 50 MHz LFA?
Thanks as always for your learned advice.
73,
Dave, K4TO
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