

Philips BX335U with Bluetooth receiver? How?
Hello :)
I am completely new to the world of vintage radios. This week I got this fantastic Philips BX335U from someone who wanted to throw it away!
https://www.radiomuseum.org/r/philips_bx335u.html
I tried everything and it can only receive one local AM radio station so I think it is broken? I don't really mind because it is beautiful as it is, just to look at it. But I have some questions:
Is it possible it would receive more stations with an antenna? If so how would I be able to find and attach an antenna that would be suitable?
I have heard it is possible to attach a Bluetooth receiver like you can use for car radios to these old radios without opening or altering them. I would not want to break it in any way because I think it is important to preserve old things for the future (I collect lots of old things). How would this work? I tried to find out but I cant find a guide for this particular radio and I am a bit hesitant to experiment with it on my own because as said I don't want to break it.
Following this, is it possible to also connect an external FM radio to it to still listen to the sound of the old radio but with a little help from outside? I don't see myself fixing the radio right now, maybe later though.
Hope to hear from you and have a good day.