Recent submissions

Comment · 3 months ago
Comment · 2 years ago
Sometimes if they get to hot or following many many heating/cooling cycles the insulation varnish on the transformer windings starts to fail leading to short circuit issues.
Comment · 2 years ago
For a human who deals with student work or reads job applications spotting AI generated work quickly becomes trivially easy. Text seems to use the same general framework (although words are swapped around) also we see what I call 'word of the week' where whichever 'AI' engine seems to get hung up on a particular English word which is often an unusual one and uses it at every opportunity. It isn't long before you realise that the adage that this is just autocomplete on steroids is true.

However programming a computer to do this isn't easy. In a previous job I had dealing with plagiarism detectors and soon realised how garbage they were (and also how easily fooled they are - but that is another story). The staff soon realised what garbage these tools are so if a student accused of plagiarism decided to argue back then the accusation would be quietly dropped.

Comment · 3 years ago
Check if your phone has dropped to 2G. It is rare to find a location which only has 2G coverage but when it happens while voice/sms works OK data speed drops to almost zero.
Comment · 3 years ago
When my Mother first started wandering my first thought was there had to be some technical solution but I'm afraid the way that the mind with dementia works means that there isn't.

We tried both Airtags and GPS trackers but neither worked that well. My Mother was never one for carrying a handbag so wouldn't pick one up out of habit when leaving the house so they couldn't go in that. We tried attaching them to clothing or putting them in pockets but if something feels unusual or not as it should then she would remove it.

In addition GPS trackers need to be charged and we found the granularity of data from Airtags in the suburbs wasn't that great (sometimes only updating once an hour or so).

Comment · 3 years ago
Back in the late 80s I had a job servicing the 2 way radios used by bus drivers. Then you could smoke of buses & it caused a lot of problems not just for the passengers but for the electronics getting into volume controls , channel selector switches and that sort of thing. You would open up a radio and inside the contents had turned a yellowy brown colour , often it was impossible to make out the original colours of the wires. The trick was to put the entire radio circuit into a bath of luke warm water with washing up liquid. After 10 mins or so the nicotine residue would float up and form a yellow scum layer on top of the water. Quite disgusting.
Comment · 3 years ago
Once at a Farnborough air show many years back there was a display from an aircraft maintenance company with small sections of the skin of old airliners. On those if there was a small imperfection of the metal skin or the seal to the window or a door you could actually see a brown smear of nicotine on the white painted skin. It allowed ground staff to spot problems at an early stage.
Comment · 4 years ago
Comment · 4 years ago
No I must admit that is even lower than I thought they were capable of , yet somehow doesn't surprise me.
Comment · 4 years ago
Yes I'm seeing those as well. The pictures are just a little to perfect & the job history non existent.
Comment · 4 years ago
I never thought I would say this but LinkedIn seems to have gone even further downhill than it was a few years ago. You know things are bad when even the low end recruiters seem to have left the platform. These days 90% of the contacts/connect requests I receive are from dodgy pension "advisors" trying to get their hands on my pension pot cash.
Comment · 4 years ago
I bought an SoundBlaster16 DSP card on the basic premise it had a DSP on it as I wanted to do some audio processing. Not sure if it actually did have a DSP IC in it as Creative never released any info on how to program it. The disappointment was made up for because the day after my card arrived the supplier sent a second one by mistake then the day following a third one. They never realised their mistake so I was able to sell the spare two so had some spare cash for more useful toys.
Comment · 4 years ago
Not sure where you are but this may be linked to the number of resignations and vacancies in many big companies at the moment. I have been trying to buy some high value electronic instruments at work for the last 12 months but it is turning into a nightmare. Some suppliers won't reply to emails , others promise to arrange a sales engineer to visit but never do. Finally one company seemed interested and sent a pre-sales engineer who took details then vanished , then I was told that engineer was ill but another would come out to get the same info. They came out then the same happened again and I'm told the pre-sales engineer has left and another needs to be sent out.

This same pattern seems to be repeating a lot these days.

It's quite possible the manager who wanted the post you applied for has gone and your appointment had been forgotten about. HR would have been involved but don't like to leave their homes at the moment so this happens.

Comment · 5 years ago
Back in the day I used to have to repair the CRT monitors for these. They were incredibly heavy and you could do yourself serious harm just lifting one from a box onto your bench. The reason for the weight was that once you had removed the plastic cover there were several layers (depending on the model) of metal screening around the circuit boards. An unusually good level of EMC screening for that time. I presumed these things were all built to military/govt spec to prevent TEMPEST eavesdropping ? Anyway removing all of that wasn't a quick job.

As for the IT part of the workstations I don't ever remember them going wrong they just ran & ran.

Comment · 5 years ago
Thanks for your post. I'm aware of Jindalee and the Russian OTHRs which claim to detect aircraft (and I believe the claim) but they are very different from WSPR.

My station transmits 10 watts (and that's on the high side for WSPR) into an omnidirectional wire antenna. Some WSPR stations use directional yagi antennas but that information isn't contained in the WSPR data. A WSPR transmission lasts around 1 minute 50 seconds but the frequency shift/signal strength is only calculated the once during that transmission (not sure if by averaging). A transmission has to start within a second of the start of an even minute. Some stations are GPS locked but I just click the PTT on my radio to start the transmission while looking at the time on my digital atomic receiver clock.

In answer to your questions some WSPR stations transmit every 2 minutes while others like mine only transmit once or twice an hour.

Live from the official Hacker News API

A modern reader for Hacker News · SvelteKit + Skeleton