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CTCSS Compatibility
in FRS Radios


If you plan to purchase FRS radios from multiple manufacturers be aware of the CTCSS differences in each radio. Some of the tones on one radio may not be available on other radios. The chart below was created for the magazine by reader, John M. Wildenthal. John also made this handy spreadsheet. You may also find tone information presented below at Bill Richardson's website.

Tone Cobra 250/300 Cherokee 465 Midland 75-510 Motorola Sport Motorola TalkAbout RadioShack 106
67.0 1 1 1   1 1
69.3   2        
69.4           2
71.9 2 3 2   2 3
74.4 3 4 3   3 4
77.0 4 5 4 A 4 5
79.7 5 6 5   5 6
82.5 6 7 6   6 7
85.4 7 8 7   7 8
88.5 8 9 8 B 8 9
91.5 9 10 9   9 10
94.8 10 11 10   10 11
97.4 11 12 11 C 11 12
100.0 12 13 12   12 13
103.5 13 14 13   13 14
107.2 14 15 14 D 14 15
110.9 15 16 15   15 16
114.8 16 17 16   16 17
118.8 17 18 17 E 17 18
123.0 18 19 18   18 19
127.3 19 20 19 F 19 20
131.8 20 21 20   20 21
136.5 21 22 21 G 21 22
141.3 22 23 22   22 23
146.2 23 24 23   23 24
151.4 24 25 24   24 25
156.7 25 26 25   25 26
159.8   27       27
162.2 26 28 26   26 28
165.5           29
167.9 27 29 27   27 30
171.3           31
173.8 28 30 28   28 32
177.3           33
179.9 29 31 29   29 34
183.5   32       35
186.2 30 33 30   30 36
189.9   34       37
192.8 31 35 31   31 38
196.6   36        
199.5   37        
203.5 32 38 32   32  
206.5   39        
210.7 33 40 33   33  
218.1 34 41 34   34  
225.7 35 42 35   35  
229.1   43        
233.6 36 44 36   36  
241.8 37 45 37   37  
250.3 38 46 38   38  
254.1   47        

Motorola Information at Southern C & E's
Motorola Radio Pages

Motorola has historically referred to CTCSS as "Private Line(TM)" or PL for short.

Thanks to Robert H. Eisner, [email protected], for compiling the information about the Radio Shack and Midland Radios and giving permission to post the data on this page. Robert's research was found first in the rec.radio.scanner newsgroup. Check this newsgroup for other FRS related discussions.

FCC

PRSG
.   . . 

Last updated July 23, 1999

GMRS Web Magazine / [email protected]