FSB NUMBER: FSB10496 Government and Public Safety APC: 372 1301 E. Algonquin Road DATE: Mar-2011 Schaumburg, IL. 60196 EXPIRES: NONE

Page 1 of 2The information contained in this bulletin is intended for use by trained, professional technicians who have the proper tools, equipment, and training to perform the service described above. If applicable, enter this information or note this bulletin number and subject material in the appropriate equipment instruction manuals and make necessary schematic diagram changes. Labor and/or parts warranty reference is limited to products sold and in use in the United States. For products sold and in use Internationally, this bulletin is for informational purposes only. Radios that are Agency Approved must follow designated agency guidelines. MOTOROLA and the Stylized M Logo are registered in the US Patent & Trademark Office. All other trademarks, product, or service names are the property of their respective owners.

BULLETIN TYPE: Informational Only

SUBJECT: Public Safety Microphone (PSM) - performance issues. MODEL / SYSTEM AFFECTED: Any models of Motorola Solutions Public Safety Microphone (PSM) SYMPTOM: When using a PSM, the user may experience performance reduction of the radio and the radio’s ability to communicate with others. CAUSE: If the PSM cable is coiled, wrapped or extremely bent it may damage the coax wire inside the cable. RESOLUTION: For the best performance of your radio and public safety microphone (PSM), position the cable of the PSM across the body using a gradual, 90 degree angle; See Appendix A, Figure 1. Do not coil, wrap or cause the PSM cable to be extremely bent; See Appendix A, Figures 2 – 5. SEVERITY RECOMMENDATION: High - Perform Immediately PARTS REQUIRED (HARDWARE/SOFTWARE): NONE LABOR ALLOWANCE This is an informational bulletin. No labor warranty is implied, intended or authorized.

Attachments: Yes No

Attachment A: Special Instructions Sheet for PSM usage

FSB NUMBER: FSB10496 Government and Public Safety APC: 372 1301 E. Algonquin Road DATE: Mar-2011 Schaumburg, IL. 60196 EXPIRES: NONE

Page 2 of 2The information contained in this bulletin is intended for use by trained, professional technicians who have the proper tools, equipment, and training to perform the service described above. If applicable, enter this information or note this bulletin number and subject material in the appropriate equipment instruction manuals and make necessary schematic diagram changes. Labor and/or parts warranty reference is limited to products sold and in use in the United States. For products sold and in use Internationally, this bulletin is for informational purposes only. Radios that are Agency Approved must follow designated agency guidelines. MOTOROLA and the Stylized M Logo are registered in the US Patent & Trademark Office. All other trademarks, product, or service names are the property of their respective owners.

Appendix A Caution: For the best performance of your radio and public safety mic (PSM), position the cable of the PSM across the body using a gradual, 90 degree angle. See Figure 1. Do not coil, wrap or cause the PSM cable to be extremely bent. See Figures 2 -5. If you coil, wrap or bend the cable, this may damage the coax wire inside the cable. If the coax wire inside the cable is damaged, this may significantly reduce both the performance of the radio and the radio's ability to communicate with others.