I noticed this unusual tower a while ago. It has formations of spikes pointing downwards at an angle, as well as a single spike on top of the tower with a sort of a dish under it.

Does anybody know what these are for?

It might be that this is nothing unusual at all. I’ve just never noticed this type of configuration before.

Location of this particular tower:   59°15'44.74"N  18°06'20.06"E  (google)


There are at least five of these things on this tower:





The top:




Full views:




  

They are high gain discone antennae, used for the broadcasting and receiving of VHF & UHF radio signals (commonly used by ham radio and a variety of business and industry). They have an extremely wide band of operation, so these could be being used to intercept a broad range of radio transmission although there is no indication of the application of this particular device from your photos.