|Frequencies||4152.5, 4231, 4290.5, 6249.5, 6416.5, 6444.5, 8312.5, 8587.5, 8703|
|Emission mode||QPSK 1500 bd|
|Location||35°26'46"N 140°10'52"E (Ichihara, Japan)|
|Known counterpart stations|
"Slot Machine" is a common nickname for a one-way communication system of the Japanese Maritime Self-Defense Force in Ichihara. Emits 24/7 on a number of frequencies. The modulation utilized is QPSK, at the speed of 1500 bd. Mostly commonly heard is its idling sequence, made out of several repetitive bit patterns - but occasional traffic is passed.
"Slot Machine" traffic
This modem is in use since 2001.
Recordings by LDO