Variable RF Coil 306uH - 680uH (code 116)

Up for sale a shielded variable coil, having a code #116.

The price is for 1 Coil (1 pcs).

It's easy to take off a coil winding for re-winding it up again according to your needs.

Dimensions (the picture has been taken from the coil #101):

Photo showing the coil with both shielding and winding removed:

#116 coil windings:

L₄₃ ... 195 turns (an inductance can be adjusted by the screw ferrite core in the range of 306 μH till 680 μH)

L₂₁ ... 2 turns

Both the windings L₄₃ and L₂₁ have been wound by the copper litz wire (3 thin insulated wires parallely) to improve a Q-factor.

This coil is great for tuning to 455 kHz with about a 220 pF capacitor in parallel with the main winding.

How to determine number of the winding turns if you know the wanted inductance:

You can buy these coils with different inductances from me:

#101:    45 μH - 100 μH

#103:    45 μH - 100 μH

#116:  306 μH - 680 μH

#207:    1.7 μH - 3.7 μH

#207A: 1.7 μH - 3.7 μH

#301:  101 μH - 225 μH

Photo showing different coils you can buy from me: