Asian Fishing Fleets VHF Low 13 July 2023

[R4002]

Via the G8JNJ online VHF low band / HF online SDR (RaspSDR).

Starting time: 1550 UTC

27.6750 MHz FM 27.675 MHz FM CSQ - Asian fishery radio chatter, heavy QRM from Russian taxi dispatch and UK FM CB
27.7250 MHz FM 27.725 MHz FM CSQ - Asian fishery radio chatter, lots of 11 meter QRM (SSB, AM and FM)
27.7500 MHz FM 27.750 MHz FM CSQ - Asian fishery comms, mixing with taxi cab dispatch on 27.75 MHz FM, UK FM on 27.75125 MHz FM
27.8250 MHz FM 27.825 MHz FM CSQ - Asian fishery radio comms, heavy QRM
27.8500 MHz FM 27.850 MHz FM CSQ - Asian fishery radio comms, QRM from UK FM CB 27.85125 MHz FM and SSB comms and 27.845 MHz POCSAG pager
27.8750 MHz FM 27.875 MHz FM CSQ - Asian fishery radio network, strong QRM from paging signals on 27.885 MHz, UK FM CB and Russian taxis
27.9250 MHz FM 27.925 MHz FM CSQ - Asian fishery radio chatter, with the expected CB/freeband QRM
27.9750 MHz FM 27.975 MHz FM CSQ - Asian fishery radio chatter, QRM from 11m CB freeband and UK FM CB chatter
28.0250 MHz FM 28.025 MHz FM CSQ - Asian fishery comms, QRM from legal 10 meter amateur signals
29.1500 MHz FM 29.150 MHz FM CSQ - Asian fishery chatter, strong signals
29.7250 MHz FM 29.725 MHz FM CSQ - Asian fishery radio chatter, some QRM from FSK data bursts
29.8250 MHz FM 29.825 MHz FM CSQ - Asian fishing fleet comms, sporadic signals
29.8750 MHz FM 29.875 MHz FM CSQ - Asian fishery chatter, very busy
30.1000 MHz FM 30.100 MHz FM CSQ - Asian fishing fleet comms - QRM from FSK on 30.105MHz and POCSAG on 30.1 MHz
30.3000 MHz FM 30.300 MHz FM CSQ - Asian fishery radio comms, heavy fading
30.5250 MHz FM 30.525 MHz FM CSQ - Asian fishery radio chatter
30.7000 MHz FM 30.700 MHz FM CSQ - Asian fishery radio chatter, very deep fades
30.7250 MHz FM 30.725 MHz FM CSQ - Asian fishery chatter, good signals, very active
30.7500 MHz FM 30.750 MHz FM CSQ - Asian fishing fleet comms, also very active..basically nonstop
30.8000 MHz FM 30.800 MHz FM CSQ - Asian fishery radio network comms
31.1000 MHz FM 31.100 MHz FM CSQ - Asian fishing radio comms
31.1250 MHz FM 31.125 MHz FM CSQ - Asian fishing fleets, lots of fading
31.8000 MHz FM 31.800 MHz FM CSQ - Asian fishery radio chatter
32.7750 MHz FM 32.775 MHz FM CSQ - Asian fishery radio chatter, weak
33.4500 MHz FM 33.450 MHz FM CSQ - Asian fishery radio chatter
33.9000 MHz FM 33.900 MHz FM CSQ - Asian fishery radio chatter

Other signals (not 27.5 MHz - 39.5 MHz FM fishery radiotelephone, 25 kHz steps / 12.5 kHz [optional] steps)


29.7100 MHz FM 29.710 MHz FM - Very weak FM two-way comms noted, possibly US land mobile comms on 29.71 MHz FM
29.7200 MHz FM 29.720 MHz FM - FSK data bursts, mixing with FM voice comms on 29.725MHz FM
29.7600 MHz FM 29.760 MHz FM - UNID FM signal, weak modulation, voice - UNID
29.9050 MHz FM 29.905 MHz FM - FSK signal, MFSK (two carriers).  USB tuning 29.903 MHz or 29.904 MHz
29.9995 MHz FM 29.999 MHz FM - Carrier, right on 29.9995 MHz 29999.5 kHz. 
30.0000 MHz FM 30.000 MHz FM - Carrier - with "chirp"
30.0000 MHz FM 30.000 MHz FM - Carrier, right on 30.000.0 MHz 30000.0 kHz
30.0200 MHz FM 30.020 MHz FM - POCSAG paging signals, weak but tell-tale POCSAG waveform
30.0500 MHz FM 30.050 MHz FM - Military radio comms, UNID language - FM voice with wide deviation
30.1000 MHz FM 30.100 MHz FM - POCSAG paging bursts - POCSAG pager 30.1 MHz
30.1050 MHz FM 30.105 MHz FM - FSK data bursts
30.5550 MHz FM 30.555 MHz FM - POCSAG paging signals POCSAG pager (maybe offset 30.550 MHz?)
31.3250 MHz FM 31.325 MHz FM - EPARS data link (French traffic signal control data link - polytone data bursts)
31.4250 MHz FM 31.425 MHz FM - EPARS data link (French traffic signal control data link - polytone data bursts)
31.7500 MHz FM 31.750 MHz FM - UK Hospital On-Site Paging signals - POCSAG, various signal strengths noted
31.9750 MHz FM 31.975 MHz FM - EPARS data link (French traffic signal control data link - polytone data bursts)