Thanks for the answers.. I already didn't say that i needed one exact
type. They will be used in HF transceiver projects(ie. VFO's, mixers,
BPF's and everything). I think that a toroid like T-50-2 would be
useful for many applications like those. As i said above i only have
access to Philips cores and i can't find a catalog to choose from. I
did a search on the net but didn't come accross anything handy. So if
any of you have used Philips cores in your applications i would like to
know what types do you use and what equivalents are out there for known
brands such as Amidon, CWS etc.

Thanks...