37.225 MHz FM Russian Taxi Cab Radio Taxi YL Dispatcher 19 December 2023

[R4002]

Listening to 25-30 MHz and 30-50 MHz this morning on the G8JNJ “Flydog SDR”.  Lots of Russian LMR / PMR taxi cab comms on 26MHz, 27MHz, 28MHz and tons of out of band chatter all over the place.  Russians on 29.898 MHz USB (getting obliterated by POCSAG paging signals center on 29.900 MHz). 

37.225 MHz FM, with nice strong deviation 16 kHz bandwidth and very pronounced AC hum in the background, YL dispatcher Olga taxi controller 37,225 37.2250 MHz FM Russian Russia taxi cab radio comms VHF low.  The hum could also be a CTCSS tone in use, but it reminds me more of the 30-88 MHz military radio comms that have the tell-tale 400Hz aircraft power supply hum in the background. 

I know low band VHF radios like the Alinco DR-135LH cover 33 MHz - 48.5 MHz and 57.0125 MHz - 57.5 MHz, in regular wide FM (16K0F3E) and narrow FM (8K50F3E for the Alinco radio anyway).  12.5 kHz / 25 kHz steps, which fit this perfectly.  37225.0 kHz FM Russian taxi cab comms LMR land mobile radio VHF low band DX skip. 

Both 38.3750 MHz and 38.5750 MHz 85.4Hz PL tone are known Moscow taxi radio land mobile taxi radio dispatch frequencies, it’s possible that 37.2250 MHz is part of this same system. 

Moscow Russia Radio Taxi VHF Low Band PMR LMR Two Way Taxi Cab Radio system 30-50 MHz 37 MHz 38mhz band 85.4 Hz PL tone Moscow Oblast / Moscow Suburbs 37,225 38,375 38,575 85,4 PL tone CTCSS base mobile YL dispatcher

37.225 MHz possible additional part of this system. 

38.375 MHz 85.4 Hz CTCSS
38.525 MHz 85.4 Hz CTCSS

[R4002]

37.2250 MHz FM
38.3750 MHz FM
38.5250 MHz FM

all active with Russian radio taxi radio dispatch comms, 85.4 Hz tone squelch.  Russian PMR / LMR low band VHF 25-50 MHz

Other similar logs

37.125 MHz FM 77.0 Hz
37.225 MHz FM 85.4 Hz
37.225 MHz FM 100.0 Hz
37.375 MHz FM 100.0 Hz
37.400 MHz FM 167.9 Hz
37.425 MHz FM 114.8 Hz
38.275 MHz FM 94.8 Hz
38.275 MHz FM 97.4 Hz
38.375 MHz FM 85.4 Hz
38.525 MHz FM 85.4 Hz
38.525 MHz FM 100.0 Hz
38.575 MHz FM 100.0 Hz
38.725 MHz FM 156.7 Hz
41.300 MHz FM 100.0 Hz
41.525 MHz FM 179.9 Hz
41.800 MHz FM 100.0 Hz
41.800 MHz FM 173.8 Hz
41.800 MHz FM 179.9 Hz
42.200 MHz FM 110.9 Hz
42.425 MHz FM 100.0 Hz
42.425 MHz FM 179.9 Hz
42.675 MHz FM 162.2 Hz

Like the 38.375 MHz, 38.525 MHz 38.575 MHz frequencies, 41.3 MHz FM and 41.8 MHz FM both fall within military allocations, but they are using various PL tones - No doubt other tones are in use too, avoiding QRM from any military comms, local or due to skip.    12.5 kHz / 25 kHz spacing.

All appear to be Russian taxi cab radio comms - taxi controllers taxi cab dispatch voice traffic VHF low band 30-50 MHz 25-54 MHz 30-88 MHz 38MHz band 41 MHz band 42MHz band

29-36 MHz
35-50 MHz
37-50 MHz
42-50 MHz
36-42 MHz
33-48 MHz 48,5 MHz 33-48.5 MHz
57.0125 MHz 57.5 MHz