Emission Mode: AM, USB, and USB + Carrier
Variants: , ,
X06 is a diplomatic selective call system and it broadcasts on many different frequencies. It uses a series of 6 different tones in a repeating series (ex. 152346). Each tone corresponds to a certain number which is also listed below. CROWD36 data is also related to X06 and can commonly be heard after an X06 broadcast (usually on a different frequency). X06 has been active since the 1970’s and has 3 variants.
An X06 message is like an alert for the recipient that a message is
being sent, and the message usually is sent in CROWD36 data mode.
|1 = 840 Hz||2 = 870 Hz||3 = 900 Hz|
|4 = 930 Hz||5 = 970 Hz||6 = 1015 Hz|
X06a is a variant that uses two alternating tones instead of 6.
These broadcasts are less common than X06 as well. (scale ex. 121212)
X06b is a variant where one tone is used longer than the others
in the pattern. Although it usually has 5 tones, 6 can rarely be
heard. X06b is much more rare than a typical X06 broadcast.
X06c is a variant where the tones constantly repeat in a rising pattern (only 123456).