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Publication Number: 172838 Rule Parts: 95A, 95B Publication Date: 04/17/2007
Keyword: Part 95 Subpart A, Part 95 Subpart BCombined General Mobile Radio Service (GMRS) and Family Radio Service (FRS) Device, Power Requirements

First Category: Radio Service Rules
Second Category: Part 95 Personal Radio Services

Question:   What are the technical requirements and special considerations for certification of a dual band portable GMRS and FRS radio operating in the 467 MHz band?



Answer:  

This device is authorized under the radio service rules in Part 95 Subpart A “General Mobile Radio Service” (Sections 95.1 through 95.183 and Appendix A) and Part 95 Subpart B “Family Radio Service” (Sections 95.191 through 95.194).  The technical requirements for this device are in Part 95 Subpart E “Technical Regulations” (sections 95.601 through 95.678 and Appendix 1).

Special considerations for certification for this dual band radio are:

Radiated Power:

The power selection must be automatic based on the service channels selected - users or other third party selections or configurations are not permitted.  The applicant must state how the power control is implemented and how users or third parties are prevented from selecting or configuring GMRS power when operating on FRS channels.

The power limit for a portable device (a small non fixed base station) operating on GMRS channels is up to 5 W Effective Radiated Power (ERP) and up to 500 mW ERP for 'FRS ONLY' channels.  The ERP must be measured for both modes and must be listed on the grant of authorization.

Bandwidth Requirements:

The authorized bandwidth for a GMRS channel is up to 20 kHz with a default of 12.5 kHz.  FRS channels are only authorized to occupy a bandwidth up to12.5 kHz.

Antenna Requirements:

Only an integral antenna is allowed to operate in the FRS and GMRS bands.

Manual Requirements:

The user manual must include information stating that operation on GMRS frequencies requires an FCC license, and such operation is subject to additional rules specified in Part 95 including prohibited communications in Section 95.183.

Radio Frequency (RF) Safety Requirements:

RF Exposure procedures for GMRS devices are found in publication # 447498of the FCC’s Knowledge Data Base (KDB), as well as "Evaluation Compliance with FCC Guidelines for Human Exposure to Radiofrequency Electromagnetic Fields" ( OET Bulletin 65) and associated supplement C.

Referenced Links:

Knowledge Data Base (KDB), publication # 447498: http://gullfoss2.fcc.gov/prod/oet/cf/kdb/forms/FTSSearchResultPage.cfm?id=20676&switch=P

OET Bulletin Number 65 is available at http://www.fcc.gov/oet/info/documents/bulletins/

 

 



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