11/73 into 11/03 chassis?

[Mark G. Thomas]

Jake,

> On Tue, Feb 9, 2016 at 11:27 AM, Noel Chiappa <jnc at mercury.lcs.mit.edu>
....
> > Really, it's not that hard to upgrade an H9270-A (or the H9273-A in a
> > BA11-N)
> > to Q22 (I have done several of the latter); the transplant you speak of
> > (were
> > it possible) is on the same order of magnitude of work.
> >
> >         Noel

On Tue, Feb 09, 2016 at 01:36:24PM -0500, Jacob Ritorto wrote:
> So, since grafting in the Micro backplane would involve butcher work, I'm
> now wholeheartedly convinced that I should be moving to your setup with the
> BA11-N/S boxes, Noel.  And I'm sold on the Q-22 backplane conversion
> (despite failing the first time I tried it years ago).  Going to study what
> prints I have, review previous advice and go for it.
> 
> Thank you for all the tips and hand-holding!

I just did this conversion to an oddball dual-wide backplane, and
it was extremely was easy. I used a bag of 50 pre-cut wire-wrap 
jumpers which were a few dollars from Jameco or Digikey.

This page (which even mentions Noel!) has clear information and 
pictures identifying the four pins involved:

   http://web.frainresearch.org:8080/projects/pdp-11/conv22.php

Mark

-- 
Mark G. Thomas (Mark at Misty.com), KC3DRE