RF20 – EPM handheld transceiver

RF20 EPM handheld multiband transceiver with improved resistance to electronic warfare is designated for use at the lowest tactical command levels for all kinds of military units. Depending on the type of selected frequency band, the transceiver is able to communicate in HF band with frequency modulation, with VHF RF13 transceivers, RF2050, RF2350 mobile transceivers and with airborne transceivers in Aircraft band I.

PN (RN): 2300.100.10

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;
• emergency erasure of operation data on fixed frequency channels, including encryption unit codes and information for FH networks including TRANSEC and COMSEC;
• transmission of tone calling (1000 ± 200) Hz, in VHF III band (1750 ± 25) Hz;
• acoustic signaling switching on/off by transceiver operator;
• display and keypad backlight activation;
• adjustable display contrast;
• battery pack voltage signaling;
• transmission power signaling on the display, transmission signaling by LED on the top panel;
• “reception only” mode, with transmission disabled;
• whisper mode with increased microphone sensitivity and decreased audio volume;
• displaying of servicing information – firmware;
• position, velocity and time display on the LCD with GPR23 receiver connected;
• easy to control;
• transceiver remote control via PRC20 protocol;
• automatic transition from increased output to nominal output with dropped nominal supply voltage;
• possibility of using bag for modular carrying system.

b) in fixed frequency mode
• max. 10 presets from the entire frequency range, fewer preset channels if occupied by FH networks;
• simplex or semi-duplex operation;
• 150 Hz sub-tone squelch or signal squelch (only signal in VHF II);
• voice operation via internal encryption unit compatible with RF13, RF2050, RF23 – in FM ranges;
• transmission and reception of short encrypted messages – FLASH, with the opposite transceiver identification;
• data transmission according to MIL-STD-188-220 (NET);
• channel parameter programming from keypad;
• preset channel scanning;
• 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;
• compatibility with RF2050 and RF23 transceivers and RX2050 receiver on simplex and semi-duplex channels;
• selectable frequency hopping operation mode – FH, DFF, FCS, MIX and IFF with quick transition to HLC, HLG or HLA;
• communication on the channel with a continuous carrier;
• iso-fixed frequency operation mode;
• 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 (with GPR23 receiver connected);
• own position sending by SMS (with GPR23 receiver connected).

Frequency range25.000 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 III140.025 MHz to 145.9875 MHz
Modulation type
Channel spacing
HF band25 kHz
VHF I band25 kHz; 12.5 kHz; 6.25 kHz
VHF II band25 kHz; 8.33 kHz
VHF III band25 kHz; 12.5 kHz
Number of operation channels at 25 kHz channel spacing
VHF I3121
Preset channelsten
Number of channels monitored in all special operation modes3 (two adjustable, third fixed at 121.500 MHz)
Max. number of programmable nets6
Nominal supply voltage7.2V
Limit supply voltage6.5 V to 9.5 V
Frequency band with special operation modes30.000 MHz to 87.975 MHz
Voice operation F3Eaccording to STANAG 4204
Types of special operation modes
FHfrequency hopping
DFFdigital fixed frequency
FCSfree channel search
MIXmixed operation FH and FCS
IFFiso-fixed frequency
CWcontinuous wave
Time to first synchronizationmax. 5 s
Synchronization hold with transceiver off and battery pack connectedmin. 48 hours
transceiver synchronization hold with battery pack disconnectedmin. 50 s
Transceiver current consumption
transmission (nominal power)1.6 A
transmission (reduced power)0.65 A
transmission (increased power)3.2 A
reception0.2 A
stand-by0.18 A
Operation time (transmission [2 W] : reception : stand-by = 1 : 1 : 10)
with LP1302 battery packmin. 15 hours
with LP20 battery packmin. 28 hours
Transmitter nominal output for FM2 W.
Transmitter nominal output for AM1 W.
Transmitter reduced output for FM0.2 watts
Transmitter reduced output for AM0.1 watts
Transmitter extended output for FM5 W.
Harmonics suppressionmin. 40 dB
Spurious suppression at > 25 kHz mistuningmin. 60 dB
Sensitivity0.5 µV at 12 dB SINAD
Non-linear distortion factorten %
Loudspeaker output power200 mW/8 Ω
Audio bandwidth
narrow band300 Hz to 3 000 Hz
wide band20 Hz to 11 000 Hz
Mechanical properties and resistance
Immersion1 m depth
Operating temperature range-40 °C to +70 °C
transceiver with battery packW 97 mm x H 217 mm x D 44 mm
LP1302 battery packW 79 mm x H 61 mm x D 44 mm
LP20 battery packW 76 mm x H 95 mm x D 45 mm
transceivermax. 0.85 kg
LP1302 battery packmax. 0.3 kg
LP20 battery packmax. 0.45 kg
Average ranges in a medium undulated and wooden terrain at nominal power
with AS1301 short tape antenna0.8 km
with AL1301 long tape antenna5 km
RF20 - EPM handheld transceiver set
PN (RN): 2300.000.10

Set consists of RF20 EPM handheld transceiver and accessories. The RF20 multiband transceiver with improved resistance to electronic warfare is…

RF20 - Set with modular carrying system elements
PN (RN): 2300.000.62

Set consists of RF20 EPM handheld transceiver and accessories. The RF20 multiband transceiver with improved resistance to electronic warfare is…