Need help with coil inductor marking and reading !?

[coolpixs4]

Need help with coil inductor marking and reading !?
what does it mean?

I got this from datasheet MRF426, so I can't convert its parameters into real inductor values = ? uH
L3 — 7 Turns #20 0.38″ ID
7 turns = number of turns
#20 = ?
0.38" = ? copper wired diameter ?
ID = ?

 

[FvM]

#20 = ?
0.38" = ? copper wired diameter ?
ID = ?

0.38" = 9.6 mm copper wire? serious?

It's AWG 20 (0.8 mm) copper wire, ID is coil inner diameter.

 

[coolpixs4]

0.38" = 9.6 mm copper wire? serious?

It's AWG 20 (0.8 mm) copper wire, ID is coil inner diameter.

Thanks, so what does it means of 0.38" = ?

Anyway,
L1 — 3 Turns #16 0.25″ ID = ?uH
L2 — 6 Turns #16 0.5″ ID = ?uH
L3 — 7 Turns #20 0.38″ ID = ? uH or part number please

 

[FvM]

" is symbol for inch, I already translated to mm. These are self-elaborated coils, no part number, unfortunately no specified inductance. You can estimate the typical inductance by referring to online calculator tools, e.g. https://www.qsl.net/in3otd/indcalc.html

 

[betwixt]

ID = Inside Diameter, in other words the diameter of the core it is wound around.

Brian.

 

[Easy peasy]

simple air cored solenoid of few turns with ID ( internal diameter ) as stated above ....