Massimo, IZ3WWO has an EDDYSTONE 990S receiver, on which the main electronic board 6883 P / L  has been destroyed making it no longer usable. Massimo is looking for a replacement PCB 6883 P / L. Alternatively an  Eddystone 990S receiver for breaking from which he can  recover the part he needs. If you can help Massimo the contact him on nichisolomassimo@gmail.com