[Q] What are these parts?

[fusionimage]

hi! this is an old garage door opener from 1991.
i would like to know, of these parts are inductivities and what colorcode they use?
they have 5-6 pins

[nitro2k01]

Those look like trimmers (could be resistive, capacitive or inductive) and the dabs of paint probably just mean that the trimmer in question was calibrated.

[daqq]

Shielded tunable coils. Some of them might have a capacitor or some misc extra parts inside, but most of it is the inductor. You tune it by adjusting the height position of the ferrite core.

[TimFox]

Those are adjustable inductors:  slug-tuned coils.  They presumably tune the opener to the RF operating frequency.

[w2aew]

hi! this is an old garage door opener from 1991.
i would like to know, of these parts are inductivities and what colorcode they use?
they have 5-6 pins

They're certainly either adjustable inductors or IF transformers.  Unless there are some part number markings printed or stamped into the metal housings, you'd have to remove them to measure them.  You could use a technique like this video to measure them, whether they are inductors or tuned IF coils or transformers:

[fusionimage]

thanks a lot!

[mathias]

Tunable inductor is indeed most likely, but there also exist helical filters of this shape and size.

[SeanB]

With the age of that board that is not likely. Most likely the one on the bottom left is a 455kHz oscillator to do FM modulation on the crystal. the top 2 are to select harmonics of the crystal before they go to the final amplifier and the output tuned circuit, the black coil on the left with the thick silvered wire.

[fusionimage]

Ok, I'll try to reverse engineer it

fyi: the transmission frequency is ~40MHz