Connecting LK250 to VAXmate

[Paul Koning]

> On Jun 15, 2019, at 9:45 AM, Jason T via cctalk <cctalk at classiccmp.org> wrote:
> 
> On Sat, Jun 15, 2019, 03:28 Rob Jarratt via cctalk <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.

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