Asian Fishing Fleet Comms VHF Low 27.500 MHz - 39.475 MHz FM - VHF Low DX

[R4002]

Chinese fishery radio / Asian Dedicated FM
Fishing Boat Radiotelephone service going nuts this morning via UK receiver:

Just in the time frame between 1030 UTC and 1055 UTC: 

29.7750 MHz FM [CSQ] Asian fishery radio
29.8250 MHz FM [CSQ] Asian fishery radio
29.8875 MHz FM Russian language, I think
29.9250 MHz FM [CSQ] Asian fishery radio - extremely busy
29.9750 MHz FM [CSQ] Asian fishery radio
30.0000 MHz FM [CSQ] Asian fishery radio
30.0000 MHz FM Strong data signal - pager?
30.0250 MHz FM [CSQ] Asian fishery radio
30.0750 MHz FM [CSQ] Asian fishery radio
30.1000 MHz FM [CSQ] Asian fishery radio
30.1250 MHz FM [CSQ] Asian fishery radio
30.1500 MHz FM [CSQ] Asian fishery radio
30.2250 MHz FM [CSQ] Asian fishery radio
30.3000 MHz FM [CSQ] Asian fishery radio
30.3500 MHz FM [CSQ] Asian fishery radio
30.4500 MHz FM [CSQ] Asian fishery radio
30.4750 MHz FM [CSQ] Asian fishery radio
30.5000 MHz FM [CSQ] Asian fishery radio
30.5500 MHz FM [CSQ] Asian fishery radio
30.5625 MHz FM UNID traffic, Arabic?
30.6000 MHz FM [CSQ] Asian fishery radio
30.6250 MHz FM [CSQ] Asian fishery radio
30.6750 MHz FM [CSQ] Asian fishery radio
30.7750 MHz FM [CSQ] Asian fishery radio, very busy
30.8000 MHz FM [CSQ] Asian fishery radio, very busy
30.8125 MHz FM UNID voice traffic
30.8750 MHz FM [CSQ] Asian fishery radio
30.8950 MHz FM UNID language (30.895MHz is the frequency, double checked this)
30.9000 MHz FM Tail end of a FM voice transmission
30.9500 MHz FM [CSQ] Asian fishery radio
30.9625 MHz FM UNID voice traffic, Russian?
30.9750 MHz FM [CSQ] Asian fishery radio
31.0000 MHz FM [CSQ] Asian fishery radio, very busy
31.0050 MHz FM Polytone FSK data signal
31.0750 MHz FM [CSQ] Asian fishery radio
31.1000 MHz FM [CSQ] Asian fishery radio
31.1500 MHz FM [CSQ] Asian fishery radio, very busy good signals
31.2000 MHz FM [CSQ] Asian fishery radio
31.2750 MHz FM [CSQ] Asian fishery radio
31.3250 MHz FM [CSQ] French traffic signal control data
31.3250 MHz FM [CSQ] Asian fishery radio
31.4000 MHz FM [CSQ] Asian fishery radio
31.5000 MHz FM [CSQ] Asian fishery radio
31.6750 MHz FM [CSQ] Asian fishery radio
31.7000 MHz FM [CSQ] Asian fishery radio
31.7250 MHz FM [CSQ] UK POCSAG paging signals - hospital pagers
31.7450 MHz FM [CSQ] UK POCSAG paging signals - hospital pagers
31.7750 MHz FM [CSQ] UK POCSAG paging signals - hospital pagers
31.8000 MHz FM [CSQ] Asian fishery radio
31.9000 MHz FM [CSQ] Asian fishery radio
31.9750 MHz FM [CSQ] Asian fishery radio
32.0000 MHz FM [CSQ] Asian fishery radio
32.1000 MHz FM [CSQ] Asian fishery radio
32.1250 MHz FM [CSQ] Asian fishery radio
32.1750 MHz FM [CSQ] Asian fishery radio
32.2000 MHz FM [CSQ] Asian fishery radio
32.6750 MHz FM [CSQ] Asian fishery radio
33.1000 MHz FM [CSQ] Asian fishery radio
33.3250 MHz FM [CSQ] Asian fishery radio
33.4500 MHz FM [CSQ] Asian fishery radio
33.8500 MHz FM [CSQ] Asian fishery radio
34.0000 MHz FM Strong digital
34.0750 MHz FM [CSQ] Asian fishery radio


Radios sold out of China, but used worldwide.  480 channels, FM voice, regular simplex.  Carrier squelch CSQ.  No tone.  No CTCSS tone no PL tone no DCS / DPL.  DTMF/ANI and FSK based selective calling. 

27.5-39.5 MHz according to Chinese law.  Technically the last channel is 39.475 MHz. Radios display channel number only.   

Channel 001 is 27.5000 MHz FM [CSQ]
Channel 002 is 27.5250 MHz FM [CSQ]
Channel 480 is 39.4750 MHz FM [CSQ]

There are apparently variants on the market with switchable 12.5 kHz channel spacing instead of 25 kHz.  They’re advertised as 1000 channel radios, same 27.500 MHz to 39.500 MHz coverage…not sure how many of these are used in the 12.5 kHz mode.

Numerous other services, including an AM mode fishery radio service in Japan in the 35-40 MHz region. 

Others include the “DSB Fishery Radio” WSR-358 and WSR-388, along with Marine DSB Radiotelephone Radios, Marine CB Radios, etc.

DSB Radiotelephone coverages:
AM mode only

25.550 MHz to 30.500 MHz
25.550 MHz to 30.495 MHz
26.475 MHz to 27.275 MHz
26.470 MHz to 27.270 MHz
26.065 MHz to 28.755 MHz
26.760 MHz to 27.980 MHz

Marine CB Radiotelephone or Marine CB Radios Fishery Radios

AM mode and FM mode
or
AM, FM, USB, LSB

25.615 MHz to 30.105 MHz
25.615 MHz to 28.305 MHz
26.065 MHz to 28.755 MHz
25.165 MHz to 28.755 MHz
24.265 MHz to 29.655 MHz
26.515 MHz to 27.855 MHz

Note that 25615 - 30105 is a standard export CB radio band plan, as are 26065 - 28755, 24265-29655 and of course 26515 - 27855.

The “standard” AM and FM mode only Marine CB Radio coverage seems to be 26.065 MHz to 28.755 MHz.  For AM/FM/USB/LSB the coverage is either the same coverage, 25.615 MHz to 30.105 MHz or 24.265 MHz to 29.655 MHz. 

26.76 MHz to 27.98 MHz is the 1 watt double side band fishery radio service out of Japan.  1W DSB 27MHz Fishing Radio Japan 1-watt DSB fishery radiotelephone 26760 kHz 27980 kHz