2 ms·
Actually, four cheap phones (4x Motorola C123) have been used, operating in parallel. :-) And they have furthermore been modified to remove filters that in "no
by cnvogel 16y ago
Actually, four cheap phones (4x Motorola C123) have been used, operating in parallel. :-)
And they have furthermore been modified to remove filters that in "normal" phones improve signal reception but for this particular application would prohibit you from listening to the base-station-to-phone direction.
- 246tNt 16y agoYes, 4 ... but the number is not really important, mostly depends on the activity of the cell. Also my code is currently highly sub obptimal (I use 1 entire phone to listent to 1 control channel ... in theory a single phone could dump 32 of them at once). And only one single of those was modified (the one used to dump the traffic/voice channel, the other only listen to the BTS)