ruslan

22 ms·

211.
by ruslan 6y ago
Although exiting, IRC was/is a whole different world! :)
212.
by ruslan 6y ago
rz@skyrocket:~ % man uucico No manual entry for uucico rz@skyrocket:~ % uname -a FreeBSD skyrocket 9.3-RELEASE FreeBSD 9.3-RELEASE #1: Fri Nov 27 20:28:19 UTC 2015 root@skyrocket:/usr/obj/usr/src/sys/SKYROC
213.
by ruslan 6y ago
uucp, uucico, tin and you are set. ;)
214.
by ruslan 6y ago
ex 2:5077/7 here. Almost any tech guy in early 90s was a Fidonet or Usenet user. That was the only mean of communication and source of technical information available worldwide, an informational Klondike for programmers, electronics en
215.
by ruslan 6y ago
From my point reducing electronics while adding more mechanical parts will most likely lead to both cost and size increase which will make product less attractive. Fast FPGAs are getting cheaper daily.
216.
by ruslan 6y ago
Can you please ellaborate more on why Lua is way better than JSON ? We use JSON a lot for configs and data exchange, cannot see how can we gain from switching to Lua. One of my developers suggested Lua, so I'm curious.
217.
by ruslan 6y ago
AFAIK, those are regular dishes with tracking system. Phased arrays do not require mechanical tracking as they use phase shift to direct radiation.
218.
by ruslan 6y ago
Ok, thanks. Designing a DYI terminal won't be easy for these bands.
219.
by ruslan 6y ago
Is there any decent resource explaining how the whole mesh of Starlink sattelites communicate to each others and to the ground ? Do they use RF radio or modulated laser ? What equipment should be used by end users and what frequency range ?
220.
by ruslan 6y ago
My way of thinking was about high load servers mostly, where your idea works well for personal computing. In both cases a whole computing system should be designed to allow easy replacement of depleted silicon. Nowadays electronics designed
221.
by ruslan 6y ago
Mainframes ? Well, maybe, but in a bit different way. Motherboards and cables do not wearout, bridges and network interfaces most likely don't either. CPUs and RAM do. Concider a symmetrical multiprocessor system with a lot many multi-
222.
by ruslan 6y ago
In an event when CPUs become spare part, computing devices should be designed to allow fast repare or even hot-swap. Similar to HDDs, one can maintain a constant supply of CPUs in store that allows to change wore out parts fast without devi
223.
by ruslan 6y ago
TclTk is extremely cryptic. I used to code IVR scripts for Cisco access servers in early 20th, most of them still in use today. A couple of unsuccessful attempts were made to customize them by other people, but nobody (including me myself)
224.
by ruslan 6y ago
FYI. МЦСТ, a developer of the E2K CPUs has recently published an "Effective Programming of Elbrus CPUs" guide which describes its ISA. The document is in Russian. Link: http://www.mcst.ru/files/5ed39a/dd0
225.
by ruslan 6y ago
Great. Here's one: When producing a placement file for a PCB, can component part numbers be exported ? Neither Cadence, nor KiCAD stores components in their PCB files, only footprints, so part numbers cannot be easily accessed.
226.
by ruslan 6y ago
I possess a license of this OrCAD, it is exremely limiting (in terms of Constrains at least). KiCAD is even more feature rich in this case, and free. :-)
227.
by ruslan 6y ago
A year and a half ago we abandoned using Cadence and Altium in favour of KiCAD. Extremely high cost of licensing was a reason, but not the only one. Our first steps with KiCAD were hard and tiresome, my engineers even tried to sabotage the
228.
by ruslan 7y ago
IMHO, he is not going to give new virus to the whole earth, the virus already exists hence freely speading by itself from host to host. The idea is to speed up spreading of "good" virus to preempt spreading of a bad one and finall
229.
by ruslan 7y ago
Daniel, can you please elaborate on this: "Unregulated spread by individuals is a solution" ? How do you envision it ? Virus is not an open source software, you cannot just "make your own copy" without a physical contact
230.
by ruslan 7y ago
I would say the opposite - UHF signal can bounce from plane traces, this effect is known to be used by some UHF radio amateurs to conduct long distance (beyond the line of aight) QSOs.
231.
by ruslan 7y ago
FIR filter alone cannot do this, but combined with special coding like Direct Sequence Spread Spectrum (DSSS) does it pretty well. For example, CDMA and GNSS benefit from using DSSS.
232.
by ruslan 7y ago
Isn't 50W that is max allowed power on UHF (432MHz) for amateur radio ? de R9LAJ
233.
by ruslan 7y ago
I often wonder why SO_RCVTIMEO/SO_SNDTIMEO avaiable for sockets but not for file descriptors. Setting timeout once then using classic read/write on blocking FDs is easy, meaning error code handling is appropriate.
234.
by ruslan 7y ago
Did not know that, thanks. I searched for dc inside bc and could find a reference to /usr/bin/dc, so I think bc still is just a wrapper. % uname -a FreeBSD skyrocket 9.3-RELEASE FreeBSD 9.3-RELEASE #1: Fri Nov 27 20:28:19 UTC
235.
by ruslan 7y ago
I would add bc to the list, very useful to make occasional calculations from command line using "human readable" syntax.
236.
by ruslan 7y ago
The site had not been updated when the patent issued, sorry about that. Patent # RU 2559714. Exchanging GPS data is just a part of the device, btw.
237.
by ruslan 7y ago
Don't get me wrong, I'm not a patent troll, neither I want to sue anyone - that is against my attutude (I consider myself an old time hacker rooting from late 80s :)). I'm just a co-developer and co-holder of the patent for a
238.
by ruslan 7y ago
I'm just curious why my comment regarding patent was deleted ? Yes we developed a device that implements this same idea of sharing GPS data over mesh (868 ISM) network and patented it in 2014. The patent is still valid and supported. I
239.
by ruslan 7y ago
Per what you say, it takes 9 key presses on HP and 8 key presses on a soviet to calc same expression. Which one is more effient ? ;)
240.
by ruslan 7y ago
Well, I admit that soviet calculators were of nearaly same size and same functionality as their western siblings. Some, were very interesting from engineering and use points.

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