Both European PMR446 and the US FRS are limited to 0.5 W; GSM uses four times that. There are walkie-talkies with very small antennas too. The limiting factor is line-of-sight, in any case.
If you're fine with less than real-time audio, you can get much, much smaller and low power.
1) LTE frequencies are in the frequency intervals 600—900Mhz, or over the Ghz. Higher frequency means smaller antennas.
2) 5G cells are small and very dense, this means less power consumption.
3) LTE and 5G are based on CDMA, a technology that is way more efficient in term of bandwidth efficiency than the FM modulation used by a walkie talkie
> In rural areas and using low frequencies, I believe they can even be larger than GSM.
In Europe GSM is going to be dismantled. And techniques like beamforming and radio resource management reduce the power consumption for 5G base station and phones.
> No, the last CDMA based cell standards were 3G/UMTS and the Qualcomm equivalent (CDMA2000 or what it was). From then on, it’s all been OFDM.
Even if 5G is using more advanced modulations like OFDMA or NONA, the concept is the same if you compare the with FM used by walkie talkie: those are modulations way more effective in term of energy and information effiency than a traditional FM transmission
For a dasaset that live in RAM, the best solution are DuckDB or clickhouse-local.
Using SQLish data is easier than a bunch of bash script and really powerful.
Another alternative is Exasol that is factors (>10x) faster than Clickhouse and scales much better for complex analytics workloads that joins data. There is a free edition for personal use without data limit that can run on any number of cluster nodes.
If you just want to read and analyze single table data, then Clickhouse or DuckDB are perfect.
That's really interesting. One of my unfinished projects it's a system that take input from ADSB data and from a microphone and get a picture of a flying aircraft (I am living under the approaching path of a regional airport)
I don't know about AI antennas, but smart antennas[1] are a things since more than 15 years. Basically they are array of antennas that can change via software the directivity (mainly used in radar systems) or increase/reduce power transmission and direction (this is used in 5G cell).
This is probably one really fascinating projects, but there is no AI behind this kind of things.
It's just randomly trying new configurations and select the best ones in an evolving way.
During my master degree, I attended an antenna design course and I almost burnt my laptop trying to optimize a dipole array as a side project.
Stormshield is a very good product but it's mainly designed for industrial scenarios and lacks some features that are essential for an enterprise NGFW (i.e. the protocol inspection covers very few protocols compared to PA/Checkpoint/etc). Unfortunately the enterprise NGFW scenario is dominated by US or Israeli companies, even if some niches brands like Stormshield for OT and Clavister for telcos are Europeans
Stormshield firewalls offer a plethora of IPS protections and signatures, not just OT related ones. There are different licenses, offering varying protections and signatures.
Stormshield firewalls can certainly be used in enterprise settings. OT environments are an added bonus where Stormshield firewalls can be used as a protective layer.
Stormshield's IPS is its major strength, being very well integrated in the overall firewall design. The whole firewall rulebase is designed in terms of its IPS; I am not aware of any firewall on the market that has such a nicely integrated IPS.
Also, at the point where one runs out of IPS options to configure, whereby I'm not referring to signatures in the general sense of the term, and one also has adapted all of Stormshield's available signatures to the needs of the particular environment, the real fun of creating new custom IPS signatures begins.
Stormshield's roots date back to 1998's NETASQ, and so I would say they are of a similar pedigree as Check Point, in terms of their history.
Disclaimer: I'm a Stormshield Platinum Partner and hold a CSNTS.
I was in a intercontinental flight few weeks ago and when everyone was sleeping my wife was able to open Instagram and scroll the feed, while other websites were not accessible.
I did not have a PC with me, but I immediately guessed about they are doing filtering based on SNI.
Appliances like Allot or Sandvine are in this market since more than a decade.
https://old.reddit.com/r/meshtastic/comments/1qd2z97/mestast...
I doubt that BLE can propagate well over a cruise ship.
reply