This bloody thing has been going off for about six or seven hours at the flats my brother lives at, both with a fire alarm (false) & general fault. Shame it doesn't tell you which flat caused the problem.
David
Edit (not worth a new post) Sold for $182.50. Winning bid came in the very last second.
How many valves in it? What are they worth?
How many valves in it? What are they worth?
this is the warm RF probe, AC up to 30V
Telefunken E91AA = 6AL5W, EAA91 do the job also.
Now that’s rather sexy. Good for winter radio work
Well I didn't bid on this...
eBay auction: #283562586328
But I did put in a snipe on this, not expecting to win:
eBay auction: #202819208174
And then I won. So now I have a voltage calibration source.
(Attachment Link)
Between this and the stack of Tektronix gear, I guess I am more or less building a state-of-the art 70s calibration lab.
This bloody thing has been going off for about six or seven hours at the flats my brother lives at, both with a fire alarm (false) & general fault. Shame it doesn't tell you which flat caused the problem.
David
Looks vaguely familiar, is it a Proteus maybe?
In any case, it's definitely an addressable system, so there's no good reason why it shouldn't be giving an exact location.
In fact, BS5839 parts 13.2.4 a and b state that this should be displayed, and that there should be a geographic zone map adjacent to the CIE (control and indication equipment - the fire alarm panel) and any mimic/repeater panel.
The only possible (legitimate) reason for the panel not displaying this, is if the panel has been interfaced to an older, non-addressable system, in which case you can only get zone information.
The fire and subsequent fault are likely some halfwit burning some toast, and then removing the detector from its base in an effort to hide their mistake.
Back to the TE... the seller has marked my Solartron 7065 as posted now, he wanted to repair it before he sent it, and also offered a £20 discount for the delay, bringing the shipped cost down to £42...
Annndd I bought another boat anchor, semi-accidentally (I was expecting to get overbid):
And also, a nice (I believe) LCR meter, which wasn't cheap, bit of a bidding war, £169 shipped
These were around $2k new, if I'm not mistaken (hope I'm not).
And finally, saw this go for £90 + £11 shipping, seems expensive to me, or am I missing something?
Well I didn't bid on this...
eBay auction: #283562586328
But I did put in a snipe on this, not expecting to win:
eBay auction: #202819208174
And then I won. So now I have a voltage calibration source.
(Attachment Link)
Between this and the stack of Tektronix gear, I guess I am more or less building a state-of-the art 70s calibration lab.
So now you need a 70s DVM to measure the voltage source.
There are 11 Solartron 7075s for sale next week, but none of them have a lead. My spare one does
BTW, it's quiet a struggle to keep up with the thread..
Well I didn't bid on this...
eBay auction: #283562586328
But I did put in a snipe on this, not expecting to win:
eBay auction: #202819208174
And then I won. So now I have a voltage calibration source.
(Attachment Link)
Between this and the stack of Tektronix gear, I guess I am more or less building a state-of-the art 70s calibration lab.
There you go, fixed it for @med.
David
Your ticket to hell just got upgraded to Business class.
Even I agree that doesn't look right. Should remain all black.
At least the front panel was left alone.
That's not an invitation, either!
So now you need a 70s DVM to measure the voltage source.
There are 11 Solartron 7075s for sale next week, but none of them have a lead. My spare one doesI assume the shipping to the US would be more than the value of a 7075 too, plus how much would need altering for 60Hz use?
And finally, saw this go for £90 + £11 shipping, seems expensive to me, or am I missing something?
[/color][/b]
So now you need a 70s DVM to measure the voltage source.
There are 11 Solartron 7075s for sale next week, but none of them have a lead. My spare one doesI assume the shipping to the US would be more than the value of a 7075 too, plus how much would need altering for 60Hz use?
The mains voltage is "100-264V (no mains tap)".
The 50Hz/60Hz is set with a link between test points.
Mine comes in a wooden case made by the previous owner, the RAF.
I've had to "condense" three faulty 7075s into two working ones. I buggered one board with the slip of a scope probe. The RAF buggered the other's switches with a stupidly placed wooden support; I'll have to move that!
Mine comes with a lead. I took the lead and front panel socket from my buggered 7075. The lead and socket are (extortionately expensive) Fischer connectors, but have a different pinout for some reason.
I've just noticed the input impedance is only 1Mohm//150pF.
Bear in mind that calibration is done by many trimpots; you may regard that as an advantage or disadvantage I've tweaked it as best as I can.
You might, or might not, be able to get an idea of the shipping cost from another 7075 for sale: https://www.ebay.co.uk/itm/Schlumberger-Solartron-7075-Digital-Voltmeter-3/223747731227 That price is silly; I have no idea what offers they might accept.
BTW, it's quiet a struggle to keep up with the thread..