River Portable Radio 300 MHz - 344 MHz

From HFUnderground

Russian UHF short range handheld radio service. Probably authorized or at least used in other former Soviet republics (CIS, etc.)

Portable UHF service, 300 MHz band. NFM

• 300 MHz - 300.525 MHz
• 301.125 MHz - 305.825 MHz
• 307.025 MHz - 308 MHz
• 336 MHz - 336.525 MHz
• 337.125 MHz - 341.825 MHz
• 343.025 MHz - 344 MHz

Output power 5w, full CTCSS and DCS selective calling, 5 kHz, 6.25 kHz, 10 kHz, 12.5 kHz, 25 kHz spacing. Specifications are from the "river radio" model Cruise-7, which appears to be a modified Yaesu handheld.

• 300.000 MHz - 300.525 MHz
• 301.125 MHz - 305.825 MHz
• 307.025 MHz - 308.000 MHz
• 336.000 MHz - 336.525 MHz
• 337.125 MHz - 341.825 MHz
• 343.025 MHz - 344.000 MHz

Possible pairing with 36 MHz offset (split)

• 300.000 MHz - 300.525 MHz with 336.000 MHz - 336.525 MHz
• 301.125 MHz - 305.825 MHz with 337.125 MHz - 341.825 MHz
• 307.025 MHz - 308.000 MHz with 343.025 MHz - 344.000 MHz

Total spectrum is 14.350 MHz. At 12.5 kHz channel spacing, that is 1148 channels. If the system is half-duplex or split, then 574 channels. At 25 kHz spacing the total available channels drops down to 574.

Additional research regarding this spectrum indicates that it may be allocated a shared service status with NB-IoT narrowband Internet of things.

Frequency allocation table and notes from Moldova indicate that a very similar frequency band is "shared", but information is sparse.

RN024 Within frequency bands 299.6 – 300.0 MHz, 300.525 – 301.125 MHz, 305.825 –307.0 MHz, 308.0 – 308.4 MHz, 335.6 – 336.0 MHz, 336.525 – 337.125 MHz, 341.825 –343.0 MHz and 344.0 – 344.4 MHz separate frequencies can be used by non-governmental users subject to agreement with competent state security entities.

See also:

• 325 MHz Short Range Radio Service - UHF service in the Philippines
• 350 MHz Short Range Radio - Indian license free walkie talkie service UHF service
• 351 MHz Digital Personal Radio Service - Japanese digital voice radio system, license free service, similar to DPMR446 specification for the PMR446 service