OK so now that the easy stuff is done, I can start digging into the second drawer of IC's.... this time random tubes of IC's and also some new components bought in the recent years, but I of course long forgot what all that is. That will be much more fun as I have no idea what's in there, it's gonna be a surprise.
Morning here, doing my first check of leboncoin.fr ads, and saw that :
https://www.leboncoin.fr/bricolage/2182739080.htm
Apparently posted last night at 21H14min
A cool Tektronix DMM 916, looks well featured, for only 20 Euros.
Guy says it reads current OK but all other modes are defective and the display is stuck reading : " Probes ".
Sounds like something that could be fixed... or at least well worth a shot at only 20 Euros.
Sadly like anything worth anything on this website, it's already sold, I am too late !
Not that I could have bought it anyway, but still...
So really that goes to show there are sometimes decent stuff out there... but you need to run your searches every 5 minutes day and night, never sleep, never work, never eat/cook, never go to the toilets, never go out to buy groceries... no, you need to be 24/7 on the site running your searches/keywords constantly. I can't do that, I am not a robot
That is effing amazing, Pat. What is the sampling "gate" time on that thing? Somewhere between .75 and 2 seconds it looks? Does not appear to be exactly fixed duration, either...
Ooooooh... you know something, Pat... they make LED dash panel bulbs in that base...
No, wait... before you go looking for the lynching rope, hear me out.
Those 328 bulbs are rated 6V; that means the unladen voltage is probably more like 7-8V. Should still be plenty for a 12V LED bulb. But here's the thing... running at considerably less current than those filaments, iffy contacts become much less of a problem, so might help in the long run.
And as a bonus... you can change the color... could have that luscious Emerald Green they're making now... or that deep pigeon's blood red like those old HP gear with the Siemens (I think?) LED displays... or even orange to match all your nixies.
mnem
... 2400nm was unarmoured, 300nm armoured. ...
I don't think 2.4 micrometres of armour is going to make much difference.
Sigh. The other nm in common use all around the world, i.e. not just USA.
But you knew that
So newton-metres then...?
mnem
Nautical miles?
... 2400nm was unarmoured, 300nm armoured. ...
I don't think 2.4 micrometres of armour is going to make much difference.
Sigh. The other nm in common use all around the world, i.e. not just USA.
But you knew that
So newton-metres then...?
mnem
Nautical miles?
Never mind...
... 2400nm was unarmoured, 300nm armoured. ...
I don't think 2.4 micrometres of armour is going to make much difference.
Sigh. The other nm in common use all around the world, i.e. not just USA.
But you knew that
So newton-metres then...?
mnem
Nautical miles?
Never mind...
Not me!
... 2400nm was unarmoured, 300nm armoured. ...
I don't think 2.4 micrometres of armour is going to make much difference.
Sigh. The other nm in common use all around the world, i.e. not just USA.
But you knew that
So newton-metres then...?
Nautical miles?
Never mind...
Not me!
numpty modulated.
... 2400nm was unarmoured, 300nm armoured. ...
I don't think 2.4 micrometres of armour is going to make much difference.
Sigh. The other nm in common use all around the world, i.e. not just USA.
But you knew that
So newton-metres then...?
Nautical miles?
Never mind...
Not me!
numpty modulated.
near mexico
... 2400nm was unarmoured, 300nm armoured. ...I don't think 2.4 micrometres of armour is going to make much difference.Sigh. The other nm in common use all around the world, i.e. not just USA.
But you knew thatSo newton-metres then...?Nautical miles?Never mind...Not me!numpty modulated.near mexicohttps://youtu.be/HE6EP3Z0PSU -Patnight marish....
* adds fuel to the fire *
https://www.ebay.co.uk/itm/325245934818
I doubt that cable is for sub-sea use, almost all such cables have at least one layer of steel, and much thicker envelopes.
But it is not a trivial cable either: It could transfer between two and thirty thousand simultaneous telephone conversations, depending on the route and repeater spacing.
I doubt that cable is for sub-sea use, almost all such cables have at least one layer of steel, and much thicker envelopes.
But it is not a trivial cable either: It could transfer between two and thirty thousand simultaneous telephone conversations, depending on the route and repeater spacing.It looks a lot like the terrestrial "coax cables" which were a big deal in Oz back in the early 1960s, before microwave links became widespread.
When the old PMG's Dept ran such a cable from Perth to Geraldton, back around '62/'63, They used the "direct burial system", & had a crew with several Cat D9s ripping a trench.
A large part of the route became very "heavy going" for the ripper assemblies, which were lasting a lot shorter time than had been predicted.
After discussions, Cat sent an Engineer, who was "embedded" with the crew, & "burnt the midnight oil" a lot examining the damage to the rippers.
Ultimately, following his insights, Cat made some new ripper blades which did have the predicted life.
I wonder if they would go to such lengths today-----I somehow doubt it!
Another point is that the cable is extremely inflexible, and would be very difficult to draw between exchanges. On land they would have used single coax cables, and added more as and when extra capacity was required.
Another point is that point-to-point microwave links were preferable to coax: faster/easier to install, higher capacity.
I doubt that cable is for sub-sea use, almost all such cables have at least one layer of steel, and much thicker envelopes.
But it is not a trivial cable either: It could transfer between two and thirty thousand simultaneous telephone conversations, depending on the route and repeater spacing.It looks a lot like the terrestrial "coax cables" which were a big deal in Oz back in the early 1960s, before microwave links became widespread.
When the old PMG's Dept ran such a cable from Perth to Geraldton, back around '62/'63, They used the "direct burial system", & had a crew with several Cat D9s ripping a trench.
A large part of the route became very "heavy going" for the ripper assemblies, which were lasting a lot shorter time than had been predicted.
After discussions, Cat sent an Engineer, who was "embedded" with the crew, & "burnt the midnight oil" a lot examining the damage to the rippers.
Ultimately, following his insights, Cat made some new ripper blades which did have the predicted life.
I wonder if they would go to such lengths today-----I somehow doubt it!If it were for a ~400km trench(Perth to Geraldton = 373km straight line distance) you'd think so but these days an off the shelf microwave link solution would be way cheaper.....you just couldn't even get the machinery on the job for less !
Nowadays, it is pretty much, "back to the future", with direct burying of optical fibre being "all the go", & microwave pretty much having disappeared, except in "niche" applications.
A large part of the route became very "heavy going" for the ripper assemblies, which were lasting a lot shorter time than had been predicted. After discussions, Cat sent an Engineer, who was "embedded" with the crew, & "burnt the midnight oil" a lot examining the damage to the rippers. Ultimately, following his insights, Cat made some new ripper blades which did have the predicted life.
I wonder if they would go to such lengths today-----I somehow doubt it!
Out our ways most of the fibre is for backhaul and it passes many potential customers gates yet they don't get an option to connect to it.
I spent a year or so discussing this with the NZ manager of new HW rollout and while he was sympathetic the pre-existing last mile copper network was to remain for the foreseeable future.
Absolutely no vision past immediate ROI from the providers.
We jumped ship and went wireless with a Mom&Pop ISP.