Ruud Jongeling <pe2bs@...>
Hello Uelson and Arv,
In my BITX20 and my new BITX8020 (IF-9MHz, not ready yet) I used FT37-
43 with 13 turns trifilair of bifilair, 0,3mm for all transformers in
the mixer, the demodulator and the driver stage.
In my DRM radio (3995 kHz, direct conversion) I used FT23-72 with 10
turns, trifilair, 0,2 mm in the mixer.
I have no experience with FT37-61.
--- In BITX20@..., Arv Evans K7HKL <arvevans@e...> wrote:
formers) I am probably not the best person to answer your questionabout
which ferrite type toroid core material is best for yourapplication.
Possibly some other member of the BITX20 forum could answer thisreasonably
easy to work with in winding the transformers. For my plastic coreBritish
turns required for a specific inductance for each type of ferritemix.
it is usually adequate to have between 7 and 11 turns per windingif you
are using ferrite based toroid cores. I am using 16 turns with mywant
theto construct it (T1, T2 and T3) with FT37-61 or FT37-43 which of
necessary?two would be better? And how many wire returns AWG would be
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