RF2350 – EPM mobile transceiver

RF2350 mobile multiband transceiver with increased resistance against radio-electronic warfare is intended for installation in all tracked and wheeled vehicles and base stations. It is fully compatible with RF20, RF23 and RF2050 in simplex and semi-duplex frequency hopping channel. Depending on the selected frequency band, the transceiver communicates with older RF13 radio system transceivers and with other transceivers complying with STANAG 4204. The transceiver secures data communication in fixed frequency channels according to MIL-STD-188-220 standard (NET modem). Two types of modem can be used for data transmission in frequency hopping channels – P2P and NET. RF2350 transceiver includes a navigation receiver displaying navigation data on a display and transmitting the GPS data via frequency hopping radio channel using G-track service. The transceiver features one U-229/U audio frequency connector (complying with MIL-DTL-55116 standard) to connect standard headsets. Various acoustic devices such as SONETRONICS, CJ COMPONENT PRODUCTS, POWER TIME etc. can be connected to the connector.

The transceiver is manufactured in two versions: 2310.100.40 without the co-site filter and 2310.100.41 with the co-site filter.

The co-site filter allows simultaneous operation of multiple RF2350 transceivers or of one RF2350 transceiver with RF2050 transceiver in one vehicle in 30 MHz to 90 MHz operating band. There must be at least 1.5 m between the recommended types of vehicle antennas and spacing between receiving and transmitting frequencies of at least 10 %. The co-site filter must be used with all transceivers to guarantee compatible operation.

PN (RN): 2310.100.40

a) in all operation modes
• automatic self-test after power-up, with failure indication on the transceiver display (BITE);
• operational data programming from external units – PK20 or PK23;
• simplex or semi-duplex operation;
• emergency erasure of operation data on fixed frequency channels, including encryption unit codes and information for FH networks including TRANSEC and COMSEC keys;
• acoustic signaling switching on/off by transceiver operator;
• transmission of tone calling (1000 ± 200) Hz, in VHF III band (1750 ± 25) Hz;
• display and keypad backlight;
• adjustable display contrast;
• synchronous data transmission;
• transmission power signaling on the display, transmission signaling by LED on the top panel;
• operation channel signal reception signaling by a LED on the transceiver panel;
• transmitter overheat signaling LED on the transceiver panel with automatic switching to lower power output;
• signaling of active mode with co-site filter (version 2310.100.41);
• optional external cooling box for improved cooling efficiency;
• “reception only” mode, with transmission disabled;
• whisper mode with increased microphone sensitivity and decreased audio volume;
• loud received signal monitoring with volume regulation and LED signaling;
• transceiver remote control via RC20 remote control unit and PRC20 protocol;
• connector configuration for connecting one or two antennas;
• displaying of servicing information – firmware;
• position, velocity and time display on the LCD with external GPS antenna connected;
• easy to control.

b) in fixed frequency mode
• max. 10 presets from the entire frequency range 25 MHz to 145.9875 MHz, fewer preset channels if occupied by FH networks;
• 150 Hz sub-tone squelch or signal squelch (only signal in VHF II);
• voice operation via internal encryption unit compatible with RF13, RF1301, RF20 and RF2050;
• transmission and reception of short encrypted messages – FLASH, with the opposite transceiver identification;
• channel parameter programming from keypad;
• preset channel scanning;
• data transmission according to MIL-STD-188-220 compatible with modem MD13.1;
• operation frequency setting in 6.25 kHz, 8.33 kHz, 25 kHz or 1 MHz steps;
• transmission band for digital voice and data transmission 16 kbit/s according to STANAG 4204, edition 2.

c) in FH operation
• max. 6 network presets;
• operation in frequency range 30.000 MHz to 87.975 MHz;
• secure operation TRANSEC and secret operation COMSEC;
• simplex or semi-duplex operation with frequency hopping;
• selectable frequency hopping operation mode – FH, DFF, FCS and MIX with quick transition to HLC, HLG or HLA;
• communication on the channel with a continuous carrier;
• iso-fixed frequency operation mode without HLC, HLG and HLA monitoring;
• establishing of connection with fixed frequency transceivers through HLC and HLG monitoring;
• 121.500 MHz (HLA) frequency monitoring and transition to HLA with transmission disabled;
• late net entry with synchronization request;
• master transceiver switching depending on the network condition;
• transmission of warning message to all network participants;
• all transceivers authentication request;
• MASTER transceiver selective communication with a selected slave transceiver;
• transmission and reception of short text message, maximum 156 characters;
• preparation, saving and reading of up to 10 short text messages;
• transmission over notification (BREAK IN) by all transceivers;
• INTERLEAVING switching off for close-to-the-limits communication;
• data transmission at adjustable rates – 7100 bit/s, 4800 bit/s and 2400 bit/s (P2P);
• data transmission according to MIL-STD-188-220 (NET);
• CW mode suitable for use with external frequency converters;
• G-track, sending position reports via radio channel;
• own position sending by SMS.

Frequency range25.0000 MHz to 145.9875 MHz
Nominal input/output impedance50 Ω
Frequency ranges
HF25.000 MHz to 29.975 MHz
VHF I30.000 MHz to 108.000 MHz
VHF II117.975 MHz to 140.000 MHz
VHF III140.0250 MHz to 145.9875 MHz
Type of modulation
Channel spacing
HF25 kHz
VHF I25 kHz; 12.5 kHz; 6.25 kHz
VHF II25 kHz; 8.33 kHz
VHF III25 kHz; 12.5 kHz
Number of operation channels with 25 kHz spacing
VHF I3121
Number of preset channelsten
Number of frequency hopping channelsmax. 6
(25-29.975) MHz0.6 μV
(30-90) MHz with co-site filter/without co-site filter0.7 μV/0.5 μV
(90.00625-108) MHz0.5 μV
(117.975-140) MHz0.5 μV
(140.025-145.9875) MHz0.5 μV
Dynamic two-signal selectivity for adjacent channelmin. 57 dB
Suppression of intermediate frequenciesmin. 80 dB
Suppression of mirror frequenciesmin. 60 dB
Suppression of spurious receptions for detuning > 10 % from operating frequencymin. 70 dB
Nominal output powerFM 50 W
Nominal output powerAM 15 W
Reduced output powerFM 5 W
Reduced output powerAM 2 W
Harmonic suppressionmin. 60 dB
Spurious suppression at ∆f > 25 kHzmin. 70 dB
Time of continuous operation at +50 °C at duty cycle reception : transmission = 1 : 1without limit
Average ranges in medium undulated terrain at nominal power FF mode (with antenna 2.6 m)25 km
POWER SUPPLY (according to MIL-STD-1275B)
Nominal supply voltage12 VDC or 24 VDC
Limit supply voltage10 VDC to 33 VDC
Current consumption
• Transmission – nominal output power
at 12 Vmax. 25 A
at 24 Vmax. 12 A
• Receptionmax. 1.25 A (12 V)
Effectively transmitted frequency band
narrow band300 Hz to 3000 Hz
wide band20 Hz to 11000 Hz
Audio frequency levels of AF connector outputs
AF1 connector
narrow bandadjustable level/1 kΩ
wide bandconstant level 1000 mV/600 Ω
AF2 connector
narrow bandadjustable level min. 200 mW/8 Ω
narrow bandconstant level min. 775 mV/600 Ω
wide bandconstant level 1000 mV/600 Ω
REMOTE connector
narrow bandconstant level min. 775 mV/600 Ω
Audio frequency levels of AF connector inputs
AF1 connector
narrow band3 mV/∆f = 4 kHz
wide band400 mV/∆f = 4 kHz
AF2 connector
narrow band (NARROW/LINE)100 mV/∆f = 4 kHz
wide band400 mV/∆f = 4 kHz
REMOTE connector
narrow band (LINE)100 mV/∆f = 4 kHz
Built-in speaker sound pressuremin. 85 dB at maximum volume
Non-linear distortion factormax. 10 %
Received frequencyL1 (1575.42 MHz)
CodingC/A code
Number of channelsfifty
Horizontal accuracy2.5 m CEP
Velocity precision± 0.1 m/s
Time to accuracy acquisition – cold start40 s
GPS antenna connector typeSMA
Supply voltage for the preamplifier3.3 V/25 mA
Operating frequency range in FH modes30.000 MHz to 87.975 MHz
Number of monitored frequencies in FH modes3 (two programmable, third 121.5 MHz)
Frequency hopping modes
FHfrequency hopping
DFFdigital fixed frequency
FCSfree channel search
MIXmixed operation FH and FCS
IFFiso-fixed frequency
CWcontinuous wave
Time to initial synchronizationmax. 5 s
Time of autonomous synchronization holding48 h
Synchronization hold when disconnected from power supply50 s
Minimum number of operation frequencies for FH operationone
Hopping rate100 hops/s
Dimensions [w x h x d]
• without cooling block202 mm x 210 mm x 186 mm
• with cooling block202 mm x 231 mm x 186 mm
Weight8.5 kg
Operating temperatures-40 °C to +70 °C
Mechanical and climatic resistanceaccording to MIL-STD-810E
EMCaccording to MIL-STD-461E
Power requirementsaccording to MIL-STD-1275B
RF2350 operating instructions2310.010.42
RF2350 short operating instructions2310.011.42
Tactical communication, Military, Defence, Naval, Air Force
RF2350 - EPM mobile transceiver set
PN (RN): 2310.000.43

Set consists of RF2350 EPM mobile transceiver (without co-site filter) and accessories.

RF2350 mobile multiband transceiver with increased resistance against…