A decentralized peer-to-peer messaging application that operates over Bluetooth

Post by Buttons840 » Tue, Jan 20, 2026, 6:48 AM UTC

modeless wrote: post #217

It's criminal that cell phones are bristling with incredibly advanced radio technology and yet they are by law not allowed to communicate directly with each other over a distance of more than a couple hundred meters without assistance from a licensed and centrally controlled base station. Meanwhile a $10 walkie talkie using primitive stone-age radio technology can go many miles with zero infrastructure, but by law is…

Post by lormayna » Tue, Jan 20, 2026, 7:59 AM UTC

lxgr wrote: post #310

lormayna wrote: post #297

Earlier quoted context omitted.

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

> 5G cells are small and very dense Not necessarily. In rural areas and using low frequencies, I believe they can even be larger than GSM. > LTE and 5G are based on CDMA 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.

Post by c16 » Tue, Jan 20, 2026, 8:42 AM UTC

maqp wrote: post #189

c16 wrote: post #159

Earlier quoted context omitted.

There are yes for Meshtastic. This map seems to have the highest coverage of people sharing their nodes, but in reality in my area there are significantly more which are not shown on the map. https://meshtastic.liamcottle.net/

Whoa, at the same time it's negligible but also a LOT more than I expected. Thanks!

Post by bcraven » Tue, Jan 20, 2026, 10:57 AM UTC

mlrtime wrote: post #105

bcraven wrote: post #56

Earlier quoted context omitted.

Back in the 2010s I used the 'Notes' applications to send messages via Bluetooth on my Sony Ericsson to chat with a girl in the next bunk. There was no signal in the remote Irish hostel so it was the perfect way to send messages covertly in the dormitory. Fun night!

Don't keep us guessing, what did you guys talk about :)

Post by niemandhier » Tue, Jan 20, 2026, 12:03 PM UTC

nunobrito wrote: post #61

niemandhier wrote: post #51

Earlier quoted context omitted.

Coll idea. One thing: This numbers exclude healthcare costs as you get older this gets more expensive. For countries with free healthcare, it is usually limited to people working there or citizens and ( in the German case ) recognised refugees.

For Portugal the "free" healthcare is extremely generous to anyone staying there, regardless if citizens or not. It does lose money, but then again Germany always pays the bill.