And in a recipe it is not possible to recover several items as if it was a grinder?
A grinder would be a workstation and would follow all the rules, so you would create a recipe that generates those parts after you "craft" it.
so to further your example into actual code
<recipe name="RadioScrapBundle" count="1" craft_area="workbench" tags="workbenchCrafting">
<ingredient name="radio" count="1"/>
</recipe>
<item name="RadioScrapBundle">
<property name="Extends" value="noteTestersDelightAdmin"/>
<property name="CreativeMode" value="Player"/>
<property name="CustomIcon" value="bundleSolarBank"/>
<property name="CustomIconTint" value="FFFFFF"/>
<property name="ItemTypeIcon" value="bundle"/>
<property name="DescriptionKey" value="questRewardElectricalPowerBundleDesc"/>
<property class="Action0">
<property name="Create_item" value="microchips,smallBatteries,resistors,copperWire"/>
<property name="Create_item_count" value="2-3,1-2,3,10"/>
</property>
</item>
If a mod has a grinder workstation in it, my assumption is that it behaves like a workstation so it has recipes tied to it that creates items when you place them inside of it and interact with it.