Ditto on Pi taking more amps than advertised. Another catch though are
counterfeit SD cards. I only recently learned about them from a friend and
YouTube video but they can get into online stores sometimes without the
seller even knowing. I ended up finding two of mine bought from ham radio
expo ar
On Sat, Aug 10, 2019, 6:02 PM Bill Degnan via cctalk
wrote:
> The clearing of the deteriorating adhesive is documented here and there on
> the web, use heat to separate the outer from the inner screen. Remove the
> inner screen and clean the gunk from the inside of the outer screen...in
> summar
The clearing of the deteriorating adhesive is documented here and there on
the web, use heat to separate the outer from the inner screen. Remove the
inner screen and clean the gunk from the inside of the outer screen...in
summary ...here are some details
http://www.retrotechnology.com/restore/adm3
upper case is default... do you mean lower case? Ed#
In a message dated 8/10/2019 8:34:06 AM US Mountain Standard Time,
cctalk@classiccmp.org writes:
I can fix the RAM problem once I can see what is actually on the screen! ;)Also
the wire bracket with threaded ends that holds the flyback t
On 8/10/19 8:33 AM, Charles via cctalk wrote:
I also scrubbed off the black anti-reflective coating since it was
significantly scratched and peeled anyway.
um.. you didn't remove the aquadag from the outside of the crt, did you?
No worries Al, I got my EE in '81 back when CRTs were still in u
On 8/10/19 8:33 AM, Charles via cctalk wrote:
> I also scrubbed off the black anti-reflective coating since it was
> significantly scratched and peeled anyway.
um.. you didn't remove the aquadag from the outside of the crt, did you?
I decided just to fire it up and see if anything blew... it issued the
expected beep as it came up.
Set the switch to half-duplex and it does actually echo bell (Ctrl-G) and I
can see the screen moving as I type!
But there is some kind of garbage every other row, although the cursor
moves and t
> -Original Message-
> From: cctech On Behalf Of Douglas Taylor
> via cctech
> Sent: 10 August 2019 05:06
> To: General Discussion: On-Topic Posts
> Subject: Pertec Interface Cable Length
>
> I have a question about cable length - any electrical engineers in the house?
Its electronic
I have a question about cable length - any electrical engineers in the
house?
Connected a Qualstar 1260 tape drive to an Emulex TC02 qbus tape
controller in a pdp-11/53. The interface is pertec with 2 50 pin cables.
When I use a pair of short flat ribbon cables, 18 and 30 inches each, it
wo
> It doesn't work when I use a pair of 5 foot long flat ribbon cables.
> Are they too long? Do I need twisted pair type of cable? Is it
> possibly a termination problem?
These cables typically were twisted pair, at least inside cabinets.
(They might transition to round cables at bulkheads bef
On 8/9/19 9:05 PM, Douglas Taylor via cctech wrote:
> I have a question about cable length - any electrical engineers in the
> house?
>
> Connected a Qualstar 1260 tape drive to an Emulex TC02 qbus tape
> controller in a pdp-11/53. The interface is pertec with 2 50 pin cables.
>
> When I use a p
On 8/9/19 10:05 PM, Douglas Taylor via cctech wrote:
I have a question about cable length - any electrical engineers in the
house?
I'm not one.
Connected a Qualstar 1260 tape drive to an Emulex TC02 qbus tape
controller in a pdp-11/53. The interface is pertec with 2 50 pin cables.
When I u
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