PDP-11/34 filter and cable routing questions

lter/index.html> Hi John, I can only tell what I have seen on several BA11K boxen, the 10.5" high ones. The filter (if I understand what you mean) is on the outside of the box, above the white front panel. So, there is only filter material on the upper half of the box at the front side. On the 3 black metal pieces (at the outsides and in the middle) is a small band of plastic glued on which you press the filter foam. That is indicated with the "x"s. That small band of plastic is black, has glue on one side and "hooks" on the other side that will hold the foam. Foam is the "famous" brownish stuff that crumbles... ASCII art front view 11/34: ------------------------------------------------------ | x ____________________ x __________________ x | | x | | x | | x | upper part | x | | x | | x | 2 large | x |____________________| x |__________________| x | openings | x x x | |----------------------------------------------------| | | | | lower half | | with 11/34 | | console ------------------------------------------------------ I can make exact measurements this evening or tomorrow, because I have to open up my 11/34 anyway, to help an other list member. I have removed the foam, as its age made it crumble, as usual ... It is not that important as (IIRC) the air is blown through the box by the fans from the PSU at the rear side to the front! If you really want some kind of filter there, you can use the foam that your wife uses in the kitchen in the ventilator above the cooking place. In Holland that filter foam is just a few mm. thick and it is white. But that is not important, as on the 11/34 the filter foam is hidden behind a 5.25" filler panel. But I don't see much use in a filter at the front side, so I have nothing installed there (to obstruct air flow) besides the 5.25" filler panel. Dimensions: As long as it fits :-) That would probably be some 55 cm long and approx 13 cm high. Cabling: AFAIR, there is a 2 or 3 wire power cable, and a flat cable. A bit difficult to describe. I will shoot few pictures this week. - Henk, PA8PDP. This message and attachment(s) are intended solely for use by the addressee and may contain information that is privileged, confidential or otherwise exempt from disclosure under applicable law. If you are not the intended recipient or agent thereof responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender immediately by telephone and with a 'reply' message. Thank you for your co-operation.