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I have a Non-Digital (Astrotype) TU-56 (dual dectape) clone. One of the heads has a few open windings so I'm looking for a replacement. Am interested in purchase or purchase/trade for some of my existing LSI-11 stock (lots of serial and parallel cards; a few tape and other interfaces plus some...

It will be interesting to see if prices for tube-based audio equipment starts going up. I though I heard most (new) power tubes come from Svetlana headquartered in St. Petersburg. Oh well, I can't afford to buy that stuff new anyway.

At this very moment I'm waiting on some old tech from Ukraine and Bulgaria. Small parts and of no real consequence to any projects, but I'm wondering if I will see them at all. They seem to be 'in motion' but I've had parts from some parts of Russia take 2.5 months to get here. Stuff from...

It's not very dense. I can see fairly clearly the 'bottom' of the individual heads and recognize the wires departing the windings. But it *is* mostly uniform, so perhaps you are correct. When I get this thing under a digital microscope, I'll snap some pics. I tried with my AO inspection...

I will do that. Ran into one of his old posts today re contacting Dave. Thanks for suggestion.

To followup last comment: I parked this domain back in 2015 and noted at that time the xx2247 LLC had been 'inactive' since 2010. It seems it was updated mid-pandemic in 2020 so perhaps there is a person there to contact now. If any of you know of a better back-channel to contact rather than...

I attempted to contact him when I found the xx2247.com was unassigned. I snapped it up to allow transfer back. It's been lying fallow for some time. I only put up this info web site for the stated purpose. If anyone knows how to get in contact with him, let him know it's available and I'll...

From visual inspection, they appear idendical to circa 1974 heads (which is about the time of this assembly, using IC datecodes.) If you compare your photo (first head in photo) to mine, they text layout is basically the same, except that the "READ / WRITE" on yours is "WRITE / READ" on mine...

Have you considered a cheap surplus reader? I have a Sanyo Denki 2702 reader and see they are still readibly available on eBay for about $50 including shipping. There's even one currently listed on Amazon for about $90 with free shipping to USA. Your shipping 'milage' may vary considering...

I have created a web site for displaying this (and other) projects. It can be found at http://xx2247.com -Gary

This may be old news, but I too ordered four HD1-6120-9 from UTSOURCE recently. Easy to deal with and the items arrived quickly, well packaged and extremely clean. I don't know what they actually do to 'refurbish' but the pins were bright and shiny and looked to have been never inserted in a...

The connector on mine isnt standard. It's a black bundle of five, 3 and 4 wire sets, each jacketed. Two of the sets are 4 wire (with the extra wire going to the 'shell' of the head assembly') The other three wires on each set goes to the three connections on each head (presumably high, low...

That was me.

Mistyped: Head is from Glendale CA. But in any seems to have disappeared into the ether.

The head is a Western Magnets from Gilmore CA. No part number; just a serial number around 20000. Conversation with another owner shows this was also a common form of head for 'real' TU-56 drives. All ICs in the system with date codes show about mid 1970s. I'm pretty sure it's Astrotype due...

I have what may be a prototype for an Astrotype DECtape drive. It appears only remotely similar to online photos I've seen. It's *not* a LINC tape drive. It was obtained about 20 years ago from an online seller and it's only now I've retired enough to consider tackling it to bring it back...