We have added many new products into stock in the past few weeks including Epcos / TDK Ferrite cores that are suitable for suppression of noise, and for use as chokes in power amplifiers on 137 and 472kHz. I have tried to keep the part number generic like the Fair-rite brand with T157 being a 1.57 inch diameter to make it easier to choose sizes. The FT157-T65 may be useful at reducing common mode RF on a telephone cable into an ADSL modem from low frequency 137 and 472kHz RF. As interest in the low and MF band increases, ferrites with a very high permeability like the T65 material become very useful as chokes and transformers in RF power amplifiers.
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