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NetworkManager Will Now Roam For WiFi Signals More Aggressively
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Exact -dBm depend on radios, they also have certain inaccuracies, 80dBm reading could mean -78dBm in air. Or -82dBm. Or something. Different radios would show different numbers. At whch point radios with overlyoptmistic readings going to suffer even worse. Also radios would usually go for lower modulations, but -80dBm is barely workable for lowest .g modulations, slow and taking plenty of airtime (=risk of airtime problems in "dense" environments). So if it reads -80dBm ... one really better using something else at this poin, if there was such option. Even iDevices eventually show strange behavior being very reluctant to give up on weak AP, even if it barely transfers any data at all, while there is awesome powerful AP nearby, so manual re-connection immediately fixes that. But I thought point of automatic roaming is to ensure user do not have to do that manually.
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Originally posted by SystemCrasher View PostAt -80 dBm most wireless radios I've seen would be in "barely works" state, losing numerous packets, it wouldn't reasonably support e.g, watching video, except maybe few lowest youtube resolutions. Granted roaming only happens if there is something better found, I'm not sure how it can make things worse. Though it also subject to SNR, in desert -80dBm would be survivable, but in typical city it means signal is badly damaged by nearby wi-fi signals so it rarely makes through and overall performance is utter crap.
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Originally posted by Jabberwocky View PostI would prefer not to talk about this topic on this forum, but the lack of consideration prompts me to highlight a few things...
For example in EU you could literally run around with a KW-range radio emitter (say a poorly shielded cheap microwave oven, no shortages of that) and none would even notice, and it would not cause much disruption either. Someone will curse at their smartphone provider and that's it.
But then you get wifi routers that by law have to prolong boot times by 5 minutes or so to sense the 5Ghz frequencies used by local air traffic radars or some shit to avoid interfering.
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Originally posted by starshipeleven View PostDoes a country where 46 people are killed per day care about that? Because that's USA.
USA has estimated 332 million people. ZA has estimated 57 million people. If you compare the stat (46) from your post compared to the 2019 stat (58) and take population into account then a person living in ZA's chance of getting murdered is increased by 734% compared to someone living in USA. The official stats, that I mentioned, are based on end of March 2018 to end of March 2019 which was before the xenophobic attacks started that's currently taking place here, murder is expected to rise in 2020.
I'm not looking for a pity party, on the contrary I think the average South African and foreigners-in-ZA are doing a great job trying to work hard and keep order. If you do not agree that there's a connection between corruption and murder then we can agree to disagree.
Back on topic... IMO the amount of WISPs and ISM band congestion is going down in my area. Not due to regulations that are enforced, but rather due to reduced demand for internet over long range WiFi links. Government owned monopoly on landlines has been decreased drastically over the past 15 years. Investing in fibre is a no-brainer in urban areas (now that it's legal).
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Originally posted by Jabberwocky View PostIf you bribe someone you get unlimited power! In a country where 58 people are killed per day things like these doesn't really matter.
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Originally posted by linuxgeex View PostI sure hope that it keeps some statistics about its success rates so it's not madly hopping AP's pointlessly.
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Originally posted by grigi View PostWow, in South Africa the legal limit is 200mw and 100mw. So 5GHz is pretty much always superior.
But nobody enforces the limits, so one can easily get 1W radios, especially in the Amateur Radio circles...
ICASA's rules are quite complicated and, to my knowledge, have not been updated in many years. That said, according to "The Radio Frequency Spectrum Regulations of 2015 (Government Gazette No. 38641)" For wireless the 2.4GHz (2400-2483.5Mhz) has a limit of 100mW EIRP. For wireless the 5.8Ghz is more complicated...- Part1 (5150-5350Mhz) has a limit of 200mW EIRP and only allowed indoor
- Part2 (5470-5725Mhz) has a limit of 1W EIRP
- Part3 (5725-5875Mhz) has a limit of 4W EIRP (1W radio output power) and many strange/obvious/complex rules that goes with this one.
Most devices (which are approved by ICASA) have default radio power set to 100mW and use 6 to 10 dBi antennas, which violates ICASA's EIRP standards.
Back on topic, I like this change. I would have loved it it was configurable though.
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Originally posted by gQuigs View Post
I believe if you are scanning you can't do as much (or maybe any?) actual network traffic.
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I must be missing something: Why not scan at the lower levels but just pick the stronger signal?
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