It
is easy to find the inductance of an inductor using equation shown
on Figure 1.
However, very often ham use for implementation of the inductor
some normalized forms. So, it is possible to do tables that are
contained data for such forms.
Table 1 (Reference 1) contains data for
inductor coiled on a form in 18 and 20 mm diameter. L length in mm, N numbers of turns.
Example:
Inductor coiled on the form in 18 mm diameter by 10 turns on length
20 mm has inductance 1.153μHn.

Table 2 (Reference 1) contains data for
inductor coiled on a form in 25 AND 30mm diameter. L length
in mm, N numbers of turns.
Example:
Inductor coiled on the form in 30 mm diameter by 10 turns on length
20 mm has inductance 2.687μHn.
Table 3 (Reference 1) contains data for
inductor coiled on a form in 40 and 50mm diameter. L length
in mm, N numbers of turns.
