[Milsurplus] [MRCA] Lunar Photos

[J. Forster]

See other post. The DG power supplies only failed because the inductors in
the switching supplies went bad and developed shorted turns. The later,
potter inductors worked just fine.

-John

====================


> I did that to my system. It got to the point of requiring more time to
> repair than it ran. Mostly connector issues, then those massive power
> supplies.
>
> I had a military surplus DG machine which was pretty solid but obviously
> had cost a heck of a lot more.
>
>
> Peter
>
>> On Apr 26, 2014, at 1:01 AM, Bob Camp <ham at kb8tq.com> wrote:
>>
>> Hi
>>
>> I can’t say I had any *good* experiences with the Diablo
>> drives….they seemed to be really good at going out of alignment the
>> instant you turned your back. We were taking a sledge to some modern
>> drives at work today. I really wish I could have done the same to a few
>> of those drives “back in the day”.
>>
>> Bob
>>
>>> On Apr 25, 2014, at 6:57 PM, Peter Gottlieb <nerd at verizon.net> wrote:
>>>
>>> I had pretty good experiences with DEC drives RX01 and RY01, RK05,
>>> RM-something, terminals VT52, 55 (such an odd printer in it!), and 100.
>>> Also some of their printing terminals. DEC used Teletypes too and I had
>>> both Diablo and Wang drives which I wasn't happy with.
>>>
>>> DEC was in the business of making peripherals too.
>>>
>>>
>>> Peter
>>>
>>>> On Apr 26, 2014, at 12:32 AM, "J. Forster" <jfor at quikus.com> wrote:
>>>>
>>>> Well, DEC made it's own peripherals. DG bought peripherals from
>>>> vendors in
>>>> the business of making peripherals. They worked a lot better. Viz:
>>>>
>>>> Digitronics (PTR)
>>>> Teletype    (PTP)
>>>> Diablo      (RHD)
>>>> AlphaDate   (FHD)
>>>> BeeHive     (VDT)
>>>> Centronics  (LPT)
>>>> Calcomp     (PLT)
>>>>
>>>> The later DG peripherals generally sucked.
>>>>
>>>> YMMV,
>>>>
>>>> -John
>>>>
>>>> ===================
>>>>
>>>>
>>>>> Hi
>>>>>
>>>>> Well, back in the late 60’s and early 70’s most of our time on
>>>>> the DEC
>>>>> machines was spend rebuilding drives and copying media…..
>>>>>
>>>>> Bob
>>>>>
>>>>>> On Apr 25, 2014, at 12:31 PM, Ray Fantini <RAFANTINI at salisbury.edu>
>>>>>> wrote:
>>>>>>
>>>>>> Platforms come and go at alarming speed these days. Not uncommon to
>>>>>> see
>>>>>> pallets of tapes being sold at Wallops or Goddard for next to
>>>>>> nothing.
>>>>>> The last couple years there have been almost endless lots of D1
>>>>>> digital
>>>>>> video cassettes, a huge expensive non compressed digital format for
>>>>>> analog NTSC Here at the university we just pulled some one inch C
>>>>>> format
>>>>>> video tapes we had from the nineties and found that all the local TV
>>>>>> stations no longer have that format and am now looking at trying to
>>>>>> find
>>>>>> a playback deck for that format. We still have a working 16 MM
>>>>>> projector
>>>>>> and am surprised by how many have come and wanted us to transfer
>>>>>> from
>>>>>> that to video. The problem is not that there is not the media out
>>>>>> there
>>>>>> but the equipment to transfer the old media to any current format is
>>>>>> the
>>>>>> issue.
>>>>>> In the last five or ten years I have been working with old DEC
>>>>>> computers
>>>>>> at home, maybe more then with radios. The thing that occupies the
>>>>>> most
>>>>>> time is rebuilding drives and copying media with one of the largest
>>>>>> ongoing projects being transferring old files to more modern
>>>>>> platforms
>>>>>> and getting modern systems to be able to push software to old
>>>>>> systems.
>>>>>> That's the big project around the shop these days.
>>>>>>
>>>>>> Ray F
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>
>