There's this on ePay right now: https://www.ebay.com/itm/206568161235 which is not exactly what you're asking for, but may be pretty close. Disclaimer: I have no relationship or experience with the seller, proceed at your own risk etc. On Fri, Sep 25, 2026 at 4:09 PM Peter Ekstrom via cctalk < cctalk(a)classiccmp.org&gt; wrote:

Always tricky: I have one in the shed, use it occasionally when I want to say fire up an 11/03 with the WCS11, not sure if that combo would work in a BA23 Q22 type backplane. Does the 11/03 quad work in a BA23's Q22/Q22 slots? Will it blow up if half of it is in a Q22/CD slot? C On 9/25/26 12:09, Peter Ekstrom via cctalk wrote: proceed the I

It has the 18 bit Q/CD backplane, I have another 22 bit Q22/CD backplane in the closet here, holding a bunch of cards. Anyone got the little short 9270 or whatever it was that had the power supply and 4 full slots of Q18 (or maybe Q16. Hm. I wonder if I ever ran an 11/23 in it). That would suit my needs, then I could let this guy go. C On 9/25/26 16:37, Peter Ekstrom wrote: > Chris, > > I honestly have no idea. Does yours have the 8-slot H9278 backplane? > My 11/23+ uses a 9-slot H9276 Q/CD backplane. I don't believe H9276 > will fit in an 11/03 box though. > > I once tried to get an 11/23 up and running using an H9278. It worked > fine until I plugged in the RQDX3 board. > I probably missed something in my reading but it seemed like it should > work. The RQDX3 died though. > > I still have that H9278 in a box, but I don't plan to use it. If > anyone wants it... > > - Peter > > On Fri, Sep 25, 2026 at 4:05 PM Chris Zach via cctalk > &lt;cctalk(a)classiccmp.org&gt; wrote: > > Always tricky: I have one in the shed, use it occasionally when I > want > to say fire up an 11/03 with the WCS11, not sure if that combo would > work in a BA23 Q22 type backplane. > > Does the 11/03 quad work in a BA23's Q22/Q22 slots? Will it blow > up if > half of it is in a Q22/CD slot? > > C > > On 9/25/26 12:09, Peter Ekstrom via cctalk wrote: > > Yeah I am watching that one. Was just thinking I should ask here > too just > > in case. > > > > - Peter > > > > On Fri, Sep 25, 2026 at 11:54 Nadav Eiron > &lt;nadav.eiron(a)gmail.com&gt; wrote: > > > >> There's this on ePay right now: > https://www.ebay.com/itm/206568161235 > >> which is not exactly what you're asking for, but may be pretty > close. > >> Disclaimer: I have no relationship or experience with the > seller, proceed > >> at your own risk etc. > >> > >> On Fri, Sep 25, 2026 at 4:09 PM Peter Ekstrom via cctalk < > >> cctalk(a)classiccmp.org&gt; wrote: > >> > >>> Hi everyone, > >>> > >>> I may have asked this before, I can't remember... > >>> > >>> I have a PDP-11/23+ pieced together on an H9276 backplane, > sitting on the > >>> floor. I have rigged > >>> some fans to keep it cool, but I would love to have either a > complete > >>> BA11-S box, or the H9276-B > >>> cardcage for it. The cardcage doesn't have to have the > backplane since I > >>> already have one. > >>> > >>> Does anyone have either of these that they'd be willing to > part with? > >>> > >>> I am located in the US. > >>> > >>> - Peter > >>> >