Robert Young wrote .. > the BNC. Looking closely at OEM probes for those instruments you will > see a > little spring loaded pin. Plug on the probe and the pin makes contact > with > the ring. The simplest of these use a small resistor inside the probe > BNC > housing to indicate x1, x10, x100, etc range of the probe. Every Tek scope I've worked with required probes which have this pin to ring contact so that the scope scales itself automatically with the probe. I recently purchased a brand new 100mhz probe on ebay from a seller named avexprobes. I paid around $35 for it, and it came with some extras such as a probe BNC connector. Works well. I have a few tek 6105?? probes that I bought as a lot, majority of those work well, some are junk. Regards, Bob -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body