RF_Savage

11 ms·

61.
by RF_Savage 2y ago
The Freenode implosion also nuked chanserv and nickserv on Freenode side as well, so things happened there as well.
62.
by RF_Savage 2y ago
Does the Twitch IRC side still work? As their chat is based on IRC. I did participate on a few streams chat with a normal IRC client a few years back. Ah, Xircon, Quakenet and Counter-Strike. Those were the days.
63.
by RF_Savage 2y ago
Does it allow filtering Creative Commons version 4 only or all CC licenses jumbled? Mess up attribution and in pre-v4 CC license it reverts back to All Rights Reserved. This is the business model for some folks. 500 - 5000usd demand per inf
64.
by RF_Savage 2y ago
Barely more than a netlist.
65.
by RF_Savage 2y ago
There is also hamnet, which is partly internet routable and partly not on the 44Net IP block. https://hamnetdb.net/map.cgi It has interesting limitations due to the amateur radio spectrum used. Including total ban commerc
66.
by RF_Savage 2y ago
Shortened the title, as the original "Hardware and firmware reverse engineering primer: dissecting an FPV and video surveillance platform" did not fit.
67.
HW and FW reversing: primer: dissecting an FPV and video surveillance platform(subreption.com)
3 points by RF_Savage 2y ago|1 comments
68.
by RF_Savage 2y ago
For a desktop client hexchat/xchat works fine, imo.
69.
by RF_Savage 2y ago
It's wild reading old issues of VHF Communications and finding advertizements for buying the PCB's for this project. So I,guess people really did try to reproduce it as well.
70.
by RF_Savage 2y ago
Most Bluetooth being GFSK means the TX chain is completely non-linear to begin with, so the frequency error is an easier target for fingerprinting. That said, most also have ramp-up and ramp-down slopes on the transmission start and end
71.
by RF_Savage 2y ago
Violate billions or millions is what they used to nail warez folks with. So there is that.
72.
by RF_Savage 2y ago
For passive tags the power densities and antenna sizes in orbit would be genuinely use. For active tags it's a transponder like any other satellite tracker.
73.
by RF_Savage 2y ago
With some care, you can see the tag replies with a 10eur rtl-sdr, but the rest if the software stack does not exist for free. CISC will sell you a license to rent the software, but you need to provide your own rtl-sdr stick. Voyantic (n
74.
by RF_Savage 2y ago
That sounds very suitable for solar powered IoT and IIoT sensors, so the talk about GUI's feels confusing. Zephyr or freertos are perfectly fine with sub-2meg amounts if SRAM.
75.
by RF_Savage 2y ago
Because those are now trailing edge nodes, so cheaper and easier entry for everybody.
76.
by RF_Savage 2y ago
Retevis also now has RB24, a lora based mesh radio that does voice, but the details are very sparce. The system claims to do up to 32 hops, which has potential for some very decent range with a large enough population. https://ww
77.
by RF_Savage 2y ago
Sure, but that does not stop it from capacitively coupling it. Even tape or insulation from a wire can, be used to electrically lengthen or fine tune an antenna. But thats less about capacitance and more about the electrical lenght being lo
78.
by RF_Savage 2y ago
Even further summarized by Osmo A. Wiio: "Communication usually fails, except by accident."
79.
by RF_Savage 2y ago
A capacitance hat is a legit way to electrically lengthen an antenna. I have had decent success with them when finetuning antennas for lower bands.
80.
by RF_Savage 2y ago
Yeah. At they pulled a Sony on a smaller scale and have better relations with the local govt. The people who ordered it done will be fine.
81.
by RF_Savage 2y ago
They are part of the industry with better lawyers likely helps.
82.
by RF_Savage 2y ago
The Helsinki metropolitan area public transit system "HSL" used to be like that. Bus passes were first mifare and the DESfire after some upgrades, but the readers in the busses contained the transactions and worked offline. If
83.
by RF_Savage 2y ago
Yeah same here. Thought Sonnet had added some ML stuff into their EM simulator.
84.
by RF_Savage 2y ago
At least the civilian Starlink sats will not be able to do that. The transmit and receive frequencies are different and limited by hardware filters. They would be most useful for communications and possibly enable interference mapping. O
85.
by RF_Savage 2y ago
Nice work. Homebrew crypto and Lisp, sure a product of it's time.
86.
by RF_Savage 2y ago
That has been a solved problem for decades. The hard part is doing that during re-entry.
87.
by RF_Savage 2y ago
Exactly this, one has to keep their eyes open and give luck a chance to happen.
88.
by RF_Savage 2y ago
Not really in anyway, they are freeware. OpenRA might be GPL, but that's a complete re-implementation and extension of the original engine.
89.
by RF_Savage 2y ago
And many modern sound card IC sample at an effective rate of 192kHz and use internal DSP to downsample that to the requested sample rate. Much easier to design a good low pass filter on the cheap when your Nyquist frequency is on 96kHz i
90.
by RF_Savage 2y ago
Could have been the pulse frequency of old magnetostriction loss prevention rfid tags. The tone is not meant to be audio, but might be inadvertently emitted by the electronics.

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