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:

motorola_filter_replacement_step_1_low.jpg motorola_filter_replacement_step_2_low.jpg

Solder new baluns

Clean up the phone and solder HHM1526 and HHM1523C1 on the right places (the black dot goes up):

motorola_filter_replacement_step_3_low.jpg motorola_filter_replacement_step_4_low.jpg motorola_filter_replacement_step_5_low.jpg

Solder ceramic capacitors

Last step is to solder ceramic capacitors 04025A150JAT2A and 04025A220JAT2A:

motorola_filter_replacement_step_6_low.jpg motorola_filter_replacement_step_7_low.jpg


Thanks to Sylvain and Peter who made this possible.

motorola_filter_replacement_step_1_low.jpg (330 KB) luka12345, 08/29/2011 08:56 AM

motorola_filter_replacement_step_2.png (1.94 MB) luka12345, 08/29/2011 08:56 AM

motorola_filter_replacement_step_2_low.jpg (189 KB) luka12345, 08/29/2011 08:56 AM

motorola_filter_replacement_step_3_low.jpg (581 KB) luka12345, 08/29/2011 08:57 AM

motorola_filter_replacement_step_4_low.jpg (388 KB) luka12345, 08/29/2011 08:57 AM

motorola_filter_replacement_step_5_low.jpg (359 KB) luka12345, 08/29/2011 08:57 AM

motorola_filter_replacement_step_6_low.jpg (419 KB) luka12345, 08/29/2011 08:57 AM

motorola_filter_replacement_step_7_low.jpg (206 KB) luka12345, 08/29/2011 08:57 AM

motorola_filter_replacement_step_1.png (4.23 MB) luka12345, 08/31/2011 09:12 AM

motorola_filter_replacement_step_4.png (4.33 MB) luka12345, 08/31/2011 09:13 AM

motorola_filter_replacement_step_7.png (2.63 MB) luka12345, 08/31/2011 09:15 AM

usermanual.pdf - FilterReplacementManual DRAFT (PDF) (2.51 MB) zecke2, 12/13/2011 11:43 PM