GMRS and FRS 
The FCC rules that govern the Public Radio Service Band such as GMRS, FRS, MURS, RC and CB's can be found at 
http://www.access.gpo.gov/nara/cfr/waisidx_06/47cfr95_06.html 
 
General Mobile Radio Service 
 
GMRS: 16 UHF frequencies, eight for simplex and repeater outputs, eight for repeater inputs. Inputs and outputs are usually paired 5 MHz. apart, but any pairing of an input and output frequency is legal. CTCS (Control Tone Coded Squelch) is usual on repeaters. FCC license required, may be obtained by any individual for personal communications. Equipment must be type-certified for use in the 450-470 MHz band, 50 watts max, any antenna.
 
GMRS Channel and Usage
Frequencies
GMRS Repeater Output / Simplex 1
462.550
GMRS Repeater Output / Simplex 2
462.575
GMRS Repeater Output / Simplex 3
462.600
GMRS Repeater Output / Simplex 4
462.625
GMRS Repeater Output / Simplex 5
462.650
GMRS Repeater Output / Simplex 6
462.675
GMRS Repeater Output / Simplex 7
462.700
GMRS Repeater Output / Simplex 8
462.725
GMRS Repeater Input 1
467.550
GMRS Repeater Input 2
467.575
GMRS Repeater Input 3
467.600
GMRS Repeater Input 4
467.625
GMRS Repeater Input 5
467.650
GMRS Repeater Input 6
467.675
GMRS Repeater Input 7
467.700
GMRS Repeater Input 8
467.725
 
Family Radio Service 
  
FRS: 14 UHF frequencies for simplex operation. The frequencies are interstitial between the GMRS frequencies. CTCS may be used. Two kinds of use operation allowed. 1) Unlicensed operation on any channel using FRS type-certified radios. These are hand-held, ˝ watt max, 2.5 kHz. deviation, with permanently attached rubber antenna. 2) Licensed operation on channels 1-7 by any GMRS license holder, 5 watts max, 5 kHz. deviation allowed, any antenna, using any equipment type-certified for GMRS. GMRS users may talk with unlicensed FRS users. GMRS users must transmit their GMRS call signs when using non-FRS type-certified equipment. 
 
FRS Channel and Usage
Frequencies
FRS Simplex 1 (GMRS 5 watts ERP allowed)
462.5625
FRS Simplex 2 (GMRS 5 watts ERP allowed)
462.5875
FRS Simplex 3 (GMRS 5 watts ERP allowed)
462.6125
FRS Simplex 4 (GMRS 5 watts ERP allowed)
462.6375
FRS Simplex 5 (GMRS 5 watts ERP allowed)
462.6625
FRS Simplex 6 (GMRS 5 watts ERP allowed)
462.6875
FRS Simplex 7 (GMRS 5 watts ERP allowed)
462.7125
FRS Simplex 8
467.5625
FRS Simplex 9
467.5875
FRS Simplex 10
467.6125
FRS Simplex 11
467.6375
FRS Simplex 12
467.6625
FRS Simplex 13
467.6875
FRS Simplex 14
467.7125
 
 
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Marshall County Alabama Repeater Systems 
MCARS