Weather Data Source: Sharp Weather
 
Old 40
Channel,
Channel
Number
New 80
Channel,
Channel
Number
Frequency
MHz
Channel Purpose / Use
Channel
Spacing KHz
1
  
476.4250
Duplex - Repeater Output
  
 
41
476.4375
Duplex - Repeater Output
12.5
2
  
476.4500
Duplex - Repeater Output
12.5
 
42
476.4625
Duplex - Repeater Output
12.5
3
  
476.4750
Duplex - Repeater Output
12.5
 
43
476.4875
Duplex - Repeater Output
12.5
4
  
476.5000
Duplex - Repeater Output
12.5
 
44
476.5125
Duplex - Repeater Output
12.5
5
  
476.5250
Duplex - Repeater Output (Emergency Channel. EMERGENCY USE
ONLY)
12.5
 
45
476.5375
Duplex - Repeater Output
12.5
6
  
476.5500
Duplex - Repeater Output
12.5
 
46
476.5625
Duplex - Repeater Output
12.5
7
  
476.5750
Duplex - Repeater Output
12.5
 
47
476.5875
Duplex - Repeater Output
12.5
8
  
476.6000
Duplex - Repeater Output
12.5
 
48
476.6125
Duplex - Repeater Output
12.5
9
  
476.6250
Simplex
12.5
 
49
476.6375
Simplex
12.5
10
  
476.6500
Simplex -  4WD Drivers - Convoy, Clubs & National Parks
12.5
 
50
476.6625
Simplex
12.55
11
  
476.6750
Simplex - Call Channel
12.5
 
51
476.6875
Simplex
12.5
12
  
476.7000
Simplex
12.5
 
52
476.7125
Simplex
12.5
13
  
476.7250
Simplex
12.5
 
53
476.7375
Simplex
12.5
14
  
476.7500
Simplex
12.5
 
54
476.7625
Simplex
12.5
15
  
476.7750
Simplex
12.5
 
55
476.7875
Simplex
12.5
16
  
476.8000
Simplex
12.5
 
56
476.8125
Simplex
12.5
17
  
476.8250
Simplex
12.5
 
57
476.8375
Simplex
12.5
18
  
476.8500
Simplex - Caravan, Campers Convoy Channel
12.5
 
58
476.8625
Simplex
12.5
19
  
476.8750
Simplex
12.5
 
59
476.8875
Simplex
12.5
20
  
476.9000
Simplex
12.5
 
60
476.9125
Simplex
12.5
21
  
476.9250
Simplex
12.5
 
61
  
Reserved for Future Expansion
  
22
  
476.9500
Data Only ( No Voice- No Packet )
25
 
62
  
Reserved for Future Expansion
  
23
  
476.9750
Data Only ( No Voice- No Packet )
25
 
63
  
Reserved for Future Expansion
  
24
  
477.0000
Simplex
25
 
64
477.0125
Simplex
12.5
25
  
477.025050
Simplex
12.5
 
65
477.0375
Simplex
12.5
26
  
477.0500
Simplex
12.5
 
66
477.0625
Simplex
12.5
27
  
477.0750
Simplex
12.5
 
67
477.0875
Simplex
12.5
28
  
477.1000
Simplex
12.5
 
68
477.1125
Simplex
12.5
29
  
477.1250
Simplex  Pacific Hwy (N.S.W) and Bruce Hwy (Q.L.D) Highway Channel
12.5
 
69
477.1375
Simplex
12.5
30
  
477.1500
Simplex UHF CB - Safety Alerts, Weather and Disaster Warning
Broadcasts (EWN- Early Warning Network)
12.5
 
70
477.1625
Simplex
12.5
31
  
477.1750
Repeater Input
12.5
 
71
477.1875
Repeater Input
12.5
32
  
477.2000
Repeater Input
12.5
 
72
477.2125
Repeater Input
12.5
33
  
477.2250
Repeater Input
12.5
 
73
477.2375
Repeater Input
12.5
34
  
477.2500
Repeater Input
12.5
 
74
477.2625
Repeater Input
12.5
35
  
477.2750
Duplex - Repeater Output (Emergency Channel. EMERGENCY USE
ONLY)
12.5
 
75
477.2875
Repeater Input
12.5
36
  
477.3000
Repeater Input
12.5
 
76
477.3125
Repeater Input
12.5
37
  
477.3250
Repeater Input
12.5
 
77
477.3375
Repeater Input
12.5
38
  
477.3500
Repeater Input
12.5
 
78
477.3625
Repeater Input
12.5
39
  
477.37500
Simplex
12.5
 
79
477.3875
Simplex
12.5
40
  
477.4000
Simplex - Highway Channel
12.5
 
80
477.4125
Simplex
12.5
UHF CB Radio Frquencies Sorted Numerically into Frquency Sequence
Reserved for Future Expansion
With the introduction of 40 new UHF CB radio channels, added to the existing 40 channels, UHF CB radio has
now been upgraded to 80 channels. This frequency chart below has been numerically sorted by the frequency
numbers, instead of the channel numbers listed in numerical order. The purpose for this chart is to illustrate
the new frequency allocations provided.
The older original 40 channel frequency allocations were of a wide band spacing of 25 KHz (Kilohertz) between
each of the allocated 40 channels available to the band.
With the introduction to an extra 40 channels to the UHF CB band, the new allocated frequencies have been
slotted in between channels 1 through to channel 40.
The new 80 channel frequency allocations are now 12.5 KHz (Kilohertz) between channels 1 through to channel
80. The UHF CB frequencies are now spaced as Narrow Band frequencies.
The upside to these extra channels is, there are more channels to select from to allow for a channel that is not
busy with other people already on the channel.
The downside, narrow band radios sometimes experience interference from adjacent channels that may by
chance be in use at close proximity to each other radio antenna. This interference is called splatter.
Double click to edit
Simplified into Lay Mans Terms, but hopefully not too over simplified for the seasoned UHF CB Radio Operators