Motorola filter replacement¶
In order to use the phone as a passive uplink sniffer, you will have to remove and replace the RX filters.
To replace filters on Motorola phones you will need:
Remove existing baluns¶
First you will need to remove existing balun:
Solder new baluns¶
Clean up the phone and solder HHM1526 and HHM1523C1 on the right places (the black dot goes up):
Solder ceramic capacitors¶
Last step is to solder ceramic capacitors 04025A150JAT2A and 04025A220JAT2A:
Thanks to Sylvain and Peter who made this possible.