Uhf/vhf.
If there's no VOR (i.e the aerodrome only has NDB and DME), you select the DME frequency that applies to the VOR - whether there's a VOR or not. Thus the frequency for the DME is always published as for a VOR.
How do you select a DME frequency when there is no VOR could you please explain further please. Is a UHF frequency assigned for each VHF frequency? Could you give me an example. Please.