Al Kossow
Documentation Wizard
https://www.ebay.com/itm/NOS-NEW-DEC-Qbus-Unibus-WireWrap-Socket-pdp-11-lsi-11-pdc/224397006739 be careful, soviet "qbus" boards don't have the same pin spacing
It's interesting that these connectors do show the "staggered" pin spacing, however.
It's not that--it's just that staggered pins haven't been standard practice for quite some time--and there was no good reason for the Russians to use that geometry.
the variation in pin-spacing is probably due to the russians using metric dimensions for everything. for instance, their TTL clones use 2.5mm instead of 2.54mm pin spacinghttps://www.ebay.com/itm/NOS-NEW-DEC-Qbus-Unibus-WireWrap-Socket-pdp-11-lsi-11-pdc/224397006739 be careful, soviet "qbus" boards don't have the same pin spacing