[Heathkit] Input Coil for SB-301

[pato]

Fred: I do not know the numbers of turns, but I would do the
following to find the number of turns.
Method #1. Plat a chart of the number of turns of the other
the other band vs the bands.Draw a curve of all the points
and extend to the one of 80 meters. Normaly the line is a
soft curve.
Method #3. In the ARRL hand book find information on
inductions, Calculate the induction of the 40 meter coil.
Use this information to find the number of turns for 80
Method #3. With a grid dip, find the induction of the 40
meter coil and use this information to calculate the 80
meter coil.
The should a good experiment on coils.
I have  SB-301 and if you do not solve the problem, let me
know and will open mine and let you know.
Frank WB4EHB