Amateur Radio Stack Exchange
Amateur Radio Stack Exchange

Questions tagged [wifi]

52 questions
4
votes
1 answer

How does tuning in 2.4 GHz Wifi radios work?

I'm working with a Wifi chipset that has very poor documentation and I was wondering whether I should wait a bit after switching the channel or if I can send a Wifi frame right away. That's when I realized that I have no idea how tuning in Wifi…
AndreKR
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2
votes
1 answer

Is there an 802.11 Wi-Fi module that allows direct access to the PHY layer

I am looking for an RF chip that offers a set of bit-rates similar to the PHY bit-rates used in IEEE 802.11 (144 Mbps-900Mbps in 2.4/5GHz bands). I want to embed it on board with a processor with my own firmware. I wish to write my own MAC layer. To…
user1933458
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1
vote
1 answer

Find optimal position to place antenna

Given a number of mobile clients, is it possible to find a spot to place a wifi ap to optimize the reception for said clients? I use FSPL equation to calculate the signal from the clients' position: $$ \text{FSPL(dB)} = 20\log_{10}(d) +…
jrsall92
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1
vote
1 answer

Amateur licenced operation and wifi

Is it wise to use my call sign as SSID on 802.11x spectrum. I wish to be known. My question more pointently is, is it common for amateurs to ID on shared common wifi frequencies.
KB1DMR
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vote
1 answer

Where can I find a very long distance Wifi antenna with a range of 50-100 km? Or is it a DIY project?

I'd like to increase personal security by receiving Wifi connections 50-100 km away from physical device location, with high decibel to milliwatts (dbm) reading to overcome path attenuation by foliage and other obstacles. This would allow me to…
piece0fshite
0
votes
1 answer

Transmit data without line of sight - Legal, fast, cheap and error corrected

I go camping to France every year. There is a wifi station at 200 metres from where I camp, but I don't have a direct line of sight (it's on a slope). I can put a shoebox at the base station, but I prefer not to. I am willing to write the software…
redfast00
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0
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1 answer

How does wireless communication like wifi connect to different clients?

Does wireless communications like wifi, where different clients get different data, use different frequencies for each client? Or do they use the same frequency, but with time-divison multiplexing and encryption, so that no client can understand…
Sidd
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