Hello -
I looked at the wrong line in the dtab file earlier.
The primary TMSCP address (where the TQK50 adaptor should go) is
174500. I accidentally gave the address of the first MSCP ('ra')
earlier.
So if you have both a TK50 and a TK25 the boards should be set like
this
TK25 172520
TK50 174500
Sorry for any confusion I caused.
Steven