There are two charts shown on this page:
1) Shows how the channels on a multi-mode CB can be converted to the UK
CB channels.
2) Shows all the channels and frequencies that will be available on
multi-mode CB radios.

Above: the popular Superstar 3900 multimode CB radio covering AM, FM & SSB
Multi-mode,
multi band CB radios have more bands than the usual two standard bands
( UK
& CEPT ) that are included on the majority of normal new CB
rigs that are on the market. Some multi-mode radios do not have a
frequency read-out that shows the operator what frequency is in use. In
these cases a chart that shows what frequency is allocated to each
channel on each band is a necessity.
Two such a charts are shown below.
Multi-mode rigs will often have between four and eight bands selected
by a switch or switches. For example a rotary band selector switch may
be marked A, B, C, D indicating four bands. Or there may be
twelve bands in two banks of six. Each bank of six bands would be
selected by a second
'hi / lo' switch. The rotary switch, in this case, might be marked G/A,
H/B, I/C,J/ D, K/E, L/F.
To use the charts below it is first necessary to determine which bank /
band represents
the "Mid Band" "Mid Block" (which is the CEPT / EU band in Europe and
the standard
CB band in the USA) and then, working either side of the mid-band, it
will be possible to see
which channel and frequency applies to any given setting. The first
chart shown shows the channels used on the UK CB band, and how they
relate to the channels on a multi-mode transceiver. The High Band is
the next band above the Mid Band and the High-High Band is one further
step up. For example Mid Band is position G on the Superstar SS-158EDX,
but other radios will differ.
Important:
It must be noted that the UK and New Zealand use non standard and
unusual channel spacing which do not fit in with this plan. To use the
UK and New Zealand bands on multi-mode rigs will take a little careful
adjustment of the clarifier control in order to
get on to the correct frequency!
Example: When
wishing to select UK Channel 25 on a multi-mode rig: Channel 39 on the
High Band would be selected which would give a frequency of
27.845 MHz , however the frequency of UK CB Channel 25 is
27.84125 MHz. The frequency must therefore be reduced using the
Clarifier otherwise reception will be distorted and the transmission to
other CB'ers will be off-frequency and also very distorted.
Because of this Multi-Mode rigs cannot be recommended when one only
wants to use the UK or New Zealand band, in such cases a standard CB
rig channelised for the UK or New Zealand would be a much better option.
How
To
Find The UK CB Channels On A Multi-Mode Radio
.
UK
CB
CHANNELS |
High Band
(H on SS158)
(E on SS 3900) |
High-High Band
(I on SS158)
(F on SS3900) |
Actual UK Frequency
Required
MHz |
|
1
|
16
|
-
|
27.60125
|
|
2
|
17
|
-
|
27.61125
|
|
3
|
18
|
-
|
27.62125
|
|
4
|
19
|
-
|
27.63125
|
|
5
|
19 +10 kHz (Alpha)
|
-
|
27.64125
|
|
6
|
20
|
-
|
27.65125
|
|
7
|
21
|
-
|
27.66125
|
|
8
|
22
|
-
|
27.67125
|
|
9 *
|
24 *
|
-
|
27.68125
|
|
10 *
|
25 *
|
-
|
27.69125
|
|
11 *
|
23 *
|
-
|
27.70125
|
|
12
|
26
|
-
|
27.71125
|
|
13
|
27
|
-
|
27.72125
|
|
14
|
28
|
-
|
27.73125
|
|
15
|
29
|
-
|
27.74125
|
|
16
|
30
|
-
|
27.75125
|
|
17
|
31
|
-
|
27.76125
|
|
18
|
32
|
-
|
27.77125
|
|
19
|
33
|
-
|
27.78125
|
|
20
|
34
|
-
|
27.79125
|
|
21
|
35
|
-
|
27.80125
|
|
22
|
36
|
-
|
27.81125
|
|
23
|
37
|
-
|
27.82125
|
|
24
|
38
|
-
|
27.83125
|
|
25
|
39
|
-
|
27.84125
|
|
26
|
40
|
-
|
27.85125
|
|
27
|
-
|
1
|
27.86125
|
|
28
|
-
|
2
|
27.87125
|
|
29
|
-
|
3
|
27.88125
|
|
30
|
-
|
3 +10 Khz
(Alpha)
|
27.89125
|
|
31
|
-
|
4
|
27.90125
|
|
32
|
-
|
5
|
27.91125
|
|
33
|
-
|
6
|
27.92125
|
|
34
|
-
|
7
|
27.93125
|
|
35
|
-
|
7 +10 kHz
(Alpha)
|
27.94125
|
|
36
|
-
|
8
|
27.95125
|
|
37
|
-
|
9
|
27.96125
|
|
38
|
-
|
10
|
27.97125
|
|
39
|
-
|
11
|
27.98125
|
|
40
|
-
|
11 +10 kHz (Alpha)
|
27.99125
|
Note 1:
* Indicates out of sequence channels
Note 2: The
+10kHz designation indicates that these channels require the
use of the 10 kHz shift switch - These are known as the 'Alpha'
channels.