I’m having a garage sale on Saturday 28 May 2016 to thin out my vintage computer collection a little. Everything put out for sale will be $5 to $20 per item – including large VAX machines. The items available include those shown below (and many more): The items include, for example: About 5 x VAX ..
I came across a hardcopy manual for MDB’s MLSI-CR11, which is a QBUS Card Reader Controller. It appears to be similar in function to the DEC CR11 UNIBUS controllers (M8290/M8291) except that it has a 50-pin I/O header instead of 40 pins. Freshly scanned manual can be found here -> http://avitech.com.au/?p..
This is a PDP-11/73 in a Webster Spectrum enclosure. The 11/73 board (M8192) appears to be the only genuine DEC board in the backplane. The Spectrum is mounted in a half-height rack that also houses a Cipher tape drive. The Cipher tape drive is a Model F880640-90-1025U, with Option E and 1600 BPI (according to ..
Melbourne has a number of weekend “Technology Markets” that rotate between venues. Today’s market is at RMIT in Bundoora. Vendors at these markets sell peripherals for modern PCs, mobile phone accessories and lots of pirated software and DVDs. A small contingent of Vintage Computer hobbyists, led by Ian Mavric, have turned out at today’s market. ..
I’ve started sorting through my collection of DEC PRO-350 and PRO-380 equipment. As part of this exercise, I will be imaging any original DEC floppy disks that I locate. I have today imaged a set of 8 disks which appear to be the installation disks for V1.5 of P/OS. I have not yet checked these ..
Going through some boxes of documentation, I found some rather obscure DEC “Field Service Tech Tips” (and DEC uNote #043) that relate to the RQDX controllers. uNote #043 is already online elsewhere, but I had not seen these Tech Tips before. The 4 documents that I have scanned are: DEC uNote #043 (RQDX Controller Status/Information) ..
This post has been converted to a webpage. It is available here -> http://avitech.com.au/?page_id=1964 Apologies for the inco..
The 871B Power Controller is a single-phase 240VAC power controller found in some PDP-11 systems. It has 6 switched power sockets. One of my holiday projects was to replace the faulty neon indicator in this Power Controller. I have just posted a short webpage with some information about this repair, and some reference information about ..
15-May-2021: Note this is a very old post – most of the items below are no longer available. It’s time to thin out my vintage computer collection a little. Below is a list of items currently available. My order of priority for finding new homes for this equipment is as follows: Free of charge (or ..
Last weekend I started to investigate a “decdatasystem” in my collection. I thought I only had the TU10W tape drive and RK07 hard drive. I was very surprised to find that below the TU10W is an entire PDP-11/34 chassis with the controllers for both drives. More information available here -> PDP-11/34 dec..
I’ve just put up a webpage with some reference information about various RS232 connectors, including the DEC423 MMJ connectors. If interested, please take a look here -> http://avitech.com.au/?pa..