On Sat, Jun 15, 2019, 03:28 Rob Jarratt via cctalk <cctalk at classiccmp.orgwrote: Is it actually MMJ, with the offset pin, like a DEC serial cable? Or is it just an RJ connector like a telephone handset? And is the SDL end the same type as on an IBM model M keyboard? I have a VAXmate buried in storage. With enough prodding I could dig it out and try to determine the pinout of the cable.

LK201 keyboards use a telephone handset type connector. You might try a handset cord, though it's possible those don't work because of not having enough copper in them. At least I remember being told that handset cords have "tinsel wire" in them, while LK201 cords use real wire. paul

Someone else has given me the information now, so no need to do anything. Thanks Rob From: Rob Jarratt <robert.jarratt at ntlworld.com> Sent: 14 November 2019 20:59 To: 'Jason T' <silent700 at gmail.com>; 'General Discussion: On-Topic and Off-Topic Posts' <cctalk at classiccmp.org>; rob at jarratt.me.uk Subject: RE: Connecting LK250 to VAXmate Hello Jason, I have all the bits necessary to make a cable for the LK250 now, without butchering the IBM Model M cable I bought (which turns out to only have 4 out of 6 wires). All I need now is the pinout. I have the VAXmate technical description which gives me pin numbers and signals for the cable, but I am not really sure how that maps to the connector pins. So, if you, or anyone else, could tell me the pinout for the LK250 cable I would be very grateful. From the technical description it looks like I may be able to get away with only 4 wires, not sure. Thanks Rob From: Jason T <silent700 at gmail.com <mailto:silent700 at gmail.com> > Sent: 15 June 2019 14:46 To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org <mailto:cctalk at classiccmp.org> >; robert.jarratt at ntlworld.com <mailto:robert.jarratt at ntlworld.com> ; rob at jarratt.me.uk <mailto:rob at jarratt.me.uk> Subject: Re: Connecting LK250 to VAXmate On Sat, Jun 15, 2019, 03:28 Rob Jarratt via cctalk <cctalk at classiccmp.org <mailto:cctalk at classiccmp.org> > wrote: I recently acquired a VAXmate with an LK250 keyboard. The problem is the keyboard came without the cable. It uses an 8-pin SDL connector and the usual tiny MMJ-like connector at the keyboard end. I don't know the pinout and I don't have the necessary crimping tools, is there any source for such a cable? Is it actually MMJ, with the offset pin, like a DEC serial cable? Or is it just an RJ connector like a telephone handset? And is the SDL end the same type as on an IBM model M keyboard? I have a VAXmate buried in storage. With enough prodding I could dig it out and try to determine the pinout of the cable.