Some radio walkie-talkie has a proprietary "codes" of the channels they are connected on.
Essentially, these are not any special codes, but just an ordering numbers 0~99 where each number corresponds to a specific frequency. The problem is that these proprietary radios do not provide any alternative way to directly specify certain frequency, leading often to a situation that no one knows what exact frequency is on the specific "code number" on the radio.
Walkie-talkie from e.g. Baofeng, where there are no such "codes" by
default, but all these frequencies are set directly, often needed to
be programmed ahead with
CHIRP. So a
user of Baofeng radio can further set, say
446.00625 to a code
120, which would correspond to a code
P1 on Midland G7, for
example. However, if CHIRP wasn't used or the radio was not prior
programmed, here is a helper mappings what frequencies are behind
Usage is simple. Someone with e.g. G7 Midland can say "I am on P1", so
you can look it up and find out that he is actually on
As simple as that!
Download printable PDF