Beside the already mentioned and imo highly valid concerns, no concern regarding the curl some url and pipe to sudo?
> no concern regarding the curl some url and pipe to sudo?
We live in the time of Cargo, pip and npm. So no. /s
Show HN: An easy way of broadcasting radio around you (looking for feedback)
11–20 of 21 posts
Re: Show HN: An easy way of broadcasting radio around you (looking for feedback)
#12Luckily the FAQ already mentions why this is a bad idea. > Please note that due of the hardware of the raspberry pi, harmonics ARE generated on 3x, 5x, 7x and 9x the desired frequency. Those harmonics are polluting important services like emergency services a d others. Please do not use the GPIO of a Raspberry Pi to generate a high frequency to emit radio waves. Putting square waves on the air is always asking for tr…
I think it's more of a PoC of an exfiltration tool, not really something people will actually use.
Re: Show HN: An easy way of broadcasting radio around you (looking for feedback)
#13After seeing some comments, I'd wan't to specify something that isn't really mentionned in the readme or anywhere but, this project doesn't aim to replace professional setups nor cover long ranges (that would be absolutely irresponsible to try to). I think it's mostly aimed to cover a house, garage or to be in a sort of "big faraday cage" for your own personal use, if you have some pis and radios laying around.
Re: Show HN: An easy way of broadcasting radio around you (looking for feedback)
#14On requirements maybe include “antenna or shielded transmission line”
Technically, the pis gpio headers can act as a really, really short antenna, so it kinda works without, but you're right
Re: Show HN: An easy way of broadcasting radio around you (looking for feedback)
#15Beside the already mentioned and imo highly valid concerns, no concern regarding the curl some url and pipe to sudo?
Well, you can open the url in your browser, and inspect the code that is also on the github repo ;)
Re: Show HN: An easy way of broadcasting radio around you (looking for feedback)
#16Why is this useful (assuming the issues other people mention are fixed)?
If you have some spare rpis and a radio it can be pretty interesting to set it up to check on it, tho there are no "real world" utilities, since as the other comments mentions, it is illegal to use that as it is
Re: Show HN: An easy way of broadcasting radio around you (looking for feedback)
#17Luckily the FAQ already mentions why this is a bad idea. > Please note that due of the hardware of the raspberry pi, harmonics ARE generated on 3x, 5x, 7x and 9x the desired frequency. Those harmonics are polluting important services like emergency services a d others. Please do not use the GPIO of a Raspberry Pi to generate a high frequency to emit radio waves. Putting square waves on the air is always asking for tr…
> Syncing networked clients to play audio at exactly the same time is a solved problem. Say more?
I would guess solved but bot easy.
WebRTC makes it possible by timing is still limited to NTP who has is far above one sample, you couldn’t possibly get sample accurate playback but you could get it to within a mS or so.
Depending on how far away your sources are that might be fine, for instance two speakers in two rooms where you won’t get significant phase issues this is trivial to do(well trivial is an understatement but you can do it purely with web technologies).
Re: Show HN: An easy way of broadcasting radio around you (looking for feedback)
#18Hmm, so I can replace grandma's Christmas radio with my gangster rap playlist... interesting.
Re: Show HN: An easy way of broadcasting radio around you (looking for feedback)
#19Hmm, so I can replace grandma's Christmas radio with my gangster rap playlist... interesting.
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Re: Show HN: An easy way of broadcasting radio around you (looking for feedback)
#20After seeing some comments, I'd wan't to specify something that isn't really mentionned in the readme or anywhere but, this project doesn't aim to replace professional setups nor cover long ranges (that would be absolutely irresponsible to try to). I think it's mostly aimed to cover a house, garage or to be in a sort of "big faraday cage" for your own personal use, if you have some pis and radios laying around.
There is no "may be subject to local regulations and laws" (quoting from the project page); operating such a rig is flatly illegal in any civilized country. RF regulations are enforced by authorities at the national level and you can bet that if they have to go to the trouble of tracing down the RF signal from this (very easy to do), they will be bringing the legal equivalent of a can of whoopass with them. And they will not be mollified by claims of personal use.
Again, the project you forked from literally tells users never to attach an antenna; they have enough RF knowledge to know a tiny bit of signal can go a very very long way. You clearly do not.