Much swearing - was Re: Do-It-Yourself PDP-11 help!

[Gordon JC Pearce]

Gordon JC Pearce wrote:
> Hi all,
>   I've got what I believe is a PDP-11/73 of some sort - it lives in a 5U 
> 19" rack case with a couple of MFM hard disks, and appears to mostly be 
> made of third-party bits.

<foul Gaelic curses deleted>

On closer inspection, the termination resistor pack beside the "B" 
connector on my KDJ11-A is cracked.  How critical are the termination 
resistors, and what value resistor pack do I need?

Looking at circuit diagrams for termination cards, it looks like I want 
220 ohm resistors, going to +5V.

How critical are the bus termination resistors?

Gordon.