The PARIS VHF repeater is working on 145.600 (shift -600KHz)
Guess this is probably the only that you could work from PARIS downtown with a handy TRX.
Note that all F repeater are between 145 and 145.787.5, and are using standard IARU channels.
If you're equipped, many other UHF repeaters are available.
You'll find a list on the following link:http://www.ref-union.org/cnrr/pre_liste.html
Concerning the club station, I found the followings on the net:
Radio Club de Nanterre (Close to Puteaux)http://f6kur.multimania.com/lastation.html
If you agree, will relay your question on a french forum, where more people should be able to answer your question.
Pse let me know, and I'll show your mail for direct answers.
In addition, if you'll be able to drive, we would be pleased to welcome you in our F8KFK club station, which is 30km N/E from Paris.
Enjoy your stay.
73 de Pat - F5MFO