> I couldn't find a 600R transformer, so I built the potential divider > version. It does work, but I seemed to get a lot of echo, or rather, the > other end got a lot of echo.
That transformer looks like a somewhat specialised item to me. If the local electronics shops don't have it, and I wouldn't hold my breath, perhaps an old phone might be a good place to butcher one from? Also try http://nz.farnell.com/ http://www.rs-components.co.nz/ (Post link + item number if you find it) Volker -- Volker Kuhlmann is list0570 with the domain in header http://volker.dnsalias.net/ Please do not CC list postings to me.
