Ok, Serguei. The pictures help.
On 2016-06-20 09:04, Serguei wrote:
  Hi,
  Here what I have
 1. 
http://i.sypp.ru/sypp/hecnet/1.jpg monitor with R G B HD VD coax +
 right plug is svideo probably 
Connectors on the monitor itself is not that relevant. The output from 
the workstation will be just three coaxes, with sync-on-green. The 
monitor itself is a generic device, that can also use separate syncs 
(hence the connectors), but DEC didn't use those.
That was an odd mouse. Interesting. I actually did use a VS I many years 
ago, while at DEC. But I've long since forgotten any physical details.
  3. 
http://i.sypp.ru/sypp/hecnet/3.jpg VaxStation
itself. Look for this
 masterpiece :) 
Yes, this was the most useful picture.
   So how the jack for keyboard called? DEQNA - monitor
or ethernet AUI
 jack? if monitor so how to find such cable? what's this jack name? 
DEQNA is the ethernet controller. It has a DA-15 AUI connector. Bog 
standard thing.
The "keyboard" connector is another DA-15. It is the same connector for 
both keyboard *and* monitor. You'll have to find a matching cable. That 
cable will have a DA-15 at one end, and a block at the other end, from 
which there comes three coax cables for the monitor, and you'll have a 
4-pin modular jack, into which you plug your LK201 keyboard. It might 
also have a connection for a more standard DEC mouse, which have a round 
DIN-connector with 7 pins or so.
	Johnny
 
 Yours,
  Serguei
 20.06.2016 7:16, john connor ?????:
  Ho Lex,
  19 ???? 2016 ?., ? 22:46, Johnny Billquist
<bqt at softjar.se> ???????(?):
 Hi.
  On 2016-06-19 21:11, d wrote:
 Hello Guys,
 After 1 year fight i finally got VaxStation I ( VS20C-F2 ) + monitor
 VRT17-HA. But problem I haven't got keyboard ... and  no cable for this
 monitor to connect to VS ( 5 coax output on monitor to jack on VS)
 Problem that I can't find any technical documentation on VaxStation to
 get part numbers for this cable and keyboard
 Can somebody help? 
 I would assume the keyboard is the standard DEC thing, with a 4
pole
 modular plug. Any DEC keyboard with this connector should work, but
 back at the time, I believe it was the LK201 that it was delivered with. 
 if it
were dec423 i wouldnt ask you for help:)  i will send you photos
 with back panel later to show you the jacks
  Monitors... It wasn't that common to actually
have 5 coax cables on
 DEC equipment. I would suspect that only three were actually used.
 Which would be just the RGB signals. And DEC usually ran with
 sync-on-green. The question is what kind of connector is it on the VS
 side?
 DEC used a few different ones for different equipment. 
 this also i guess is not
very common , you will see on photo
 i will upload it somewhere and will send you url
 thanks in advance,
 Serguei
>     Johnny
>
> --
> Johnny Billquist                  || "I'm on a bus
>                                   ||  on a psychedelic trip
> email: bqt at softjar.se             ||  Reading murder books
> pdp is alive!                     ||  tryin' to stay hip" - B. Idol