Can DECT signals damage magnetic tape?

Hopefully this topic is relevant enough to be answered in this forum but I wasn't sure where else to ask it.

Basically my situation is that I have a baby due to be born in the next few weeks and have purchased a DECT baby monitor and I believe DECT signals and Wi-fi are fairly similar? What I am trying to do is understand if the signals this will give out will in any way damage magnetic tape such as VHS and Video8. I have a cupboard between my bedroom and the nursery that has many irreplaceable family videos etc. and only some have so far been converted to DVD. I am concerned that the signals this gives out will harm them in some way as I know magnetic tape can be affected by magnets.

I read on the net that DECT baby monitors and cordless phones etc. emit microwaves and electro-magnetic radiation (and maybe other stuff I am not aware of) so basically this concerns me a bit. I don't know if the signals could damage the tapes immediately or slowly degrade them over time?

Hopefully someone can shed some light on this, cheers.