Hello,
First the transistor used. The 2n222a or 2n3904 are excellent for
this type VFO.
I have tried to understand what problem you are having. I suspect
the range of tuning 0-230khz is either too small or too great for
you. The ability to adjust the frequency using the trimmer says
the coil and other components are close.
Allison
KB1GMX
--- In BITX20@..., kumar gautam <fromgautam@y...> wrote:
hi,
in my bitx20 vfo frequency is 4.000 to 4.230MHz or trimming the
trimmer i found 4.200 to 4.430 (i.e 0 to 0.230 MHz tuning range).
aftyer several changing in coil and various types of capacitor(2j or
2x type) i coul'd not achive the desired frequency. i used 2n2222a
transistors for VFO and BFO and for rest 2n3904.
kindly anyone help me in this regard
with 73's
de kumar gautam
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