Projects

00:00:57,265 –> 00:00:58,975

  • Seq, I'm in.
  • Captain.

00:00:59,058 –> 00:01:00,310

  • You were right.

00:01:00,393 –> 00:01:01,811

  • The skylight was a window pane.

00:01:01,895 –> 00:01:03,396

  • I've got serious interference.

00:01:03,480 –> 00:01:04,814

  • Weird. It's some kind of Modal.

00:01:04,898 –> 00:01:06,691

  • Looks like old code.

00:01:06,775 –> 00:01:08,151

  • It feels really familiar.

00:01:08,234 –> 00:01:09,986

  • Drop a pin. I'll signal for backup.

00:01:10,069 –> 00:01:11,738

  • I'm gonna check it out.
  • -Bugs?

00:01:11,821 –> 00:01:13,031

  • If the general finds out we've been fishing…

00:01:13,114 –> 00:01:14,783

  • A quick peek can't hurt.

00:01:14,866 –> 00:01:16,159

  • Did you hear that?

00:01:16,242 –> 00:01:17,619

  • Shit. I think our signal was traced.

00:01:17,702 –> 00:01:19,829

  • Bugs, this feels like a trap.

00:01:19,913 –> 00:01:21,039

  • Bugs!

Radio-Frequencies Protocols :

A protocol is for computing (quoted from Oxford langage):

" A set of rules governing the exchange or transmission of data between devices." Oxford Langage

The goal like it is said is to make travel information from A->B, and (maybe) then B->A etcaetera. This information has a weight and it has to move so : energy is spent, at least F(A->B). Another goals came obviously from the first depending on the case of use : spending the less energy possible, have the maximum range, transmit the most data possible, have the best yield, and be the most secure possible (I mean by that, that it can't be understood by a machine or an human on an undesired endpoint in a reasonable time at least at the time of conception and from the projected advances in technology), there are also another important points the latency, and the errors between the message sent and received. We will begin by enumerate some radio protocols, begin by saying their purpose. Then we gonna try to classify theses protocols by energy, data (raw and useful payload), power, range, frequencies and yield, security, latency, and error.

List (non-exhaustive) of Protocols

Protocol  Purpose
RFID Traceabitlity / Static Information Exchange
NFC Bank Operations / Static Information Exchange
GSM/GPRS/EDGE Calls / SMS / Internet
UMTS/HSPA/HSPA_advanced Calls / SMS / Internet
LTE/LTE_Advanced Calls / SMS / Internet / IoT
5G SA/NSA Calls / SMS / Internet / IoT
Wifi Internet / LAN / Calls (VoWifi)
Bluetooth Data exchange / Pairing devices
LoRa/SigFox Data exchange / IoT
GPS/Galileo Geolocalization

Radio-Telephony

  • Example of SFR:

Article 1

– The French Radiotelephone Company ("Société Française de Radiotéléphonie") is authorized to use, in the 900 and 1800 MHz bands, the frequencies allocated to it in Article 2 of this decision to establish and operate a radio network open to the public in metropolitan France. For this, it complies with the provisions of the specifications located in appendix 2 of this decision.

Article 2

– The GSM channels allocated to the French Radiotelephone Company are, in accordance with the definitions in appendix 1:

  • in the 900 MHz band, throughout mainland France: channels 75 to 124;
  • in the 900 MHz band, only in very dense areas: channels 63 to 74;
  • in the 1800 MHz band, throughout mainland France: channels 512 to 525 and 647 to 751

For others Operator (GSM)

Operator GSM900 DCS1800
Orange 1→62 527→646
SFR 63-74 & 75-124  512→525 & 647→751
Bouygues 975-1023 752-885

Free = ? (Free didn't invest much in 2G antenna since 2G will die in 2025 in France the use Orange roaming )

A5/1 Cracking

Download the tables :

a51_tables