RF23 – EPM handheld transceiver

a) in all modes of operation
• automatic transceiver self-test after power-up with failure indication on the display (BITE);
• programming with operational data using PK23 fill gun set;
• emergency erasing of operational data in fixed frequency channels, including encryption unit codes and FH network data, including TRANSEC and COMSEC;
• tone dialing (1000 ± 200) Hz, in VHF III band (1750 ± 25) Hz;
• acoustic signaling turning on/off by the transceiver operator;
• enabling of the display and keypad illumination;
• display contrast setting;
• battery pack voltage signaling;
• transmitter power signaling on the display;
• “receive-only” operation with suppressed transmission;
• operation mode with increased modulator sensitivity and reduced AF power;
• automatic transition from increased power to nominal power in case of supply voltage drop;
• service information displaying – firmware;
• simple control;
• displaying of position, time and speed on LCD with updates from GPS;
• AF connector configuration;
• AF connector status monitoring;
• remote transceiver control via PRC20 protocol;
• easy dismantling of the GPS antenna and connecting of external active or passive antenna via SMA connector;
• can be used with modular carrier system bags.

b) when operating at fixed frequency
• up to 10 preset channels from the entire frequency range, number of preset channels decreased when occupied with FH networks;
• simplex or semi-duplex operation;
• 150 Hz subtone squelch or signal squelch (only signal squelch in VHF II);
• voice operation via built-in encryption unit compatible with RF13, RF20, RF2050, RF2350 in VHF I;
• transmission and reception of short coded messages – FLASH with opposite transceiver identification;
• programming of radio channel parameters from the keypad;
• preset channel scanning;
• data transmission according to MIL-STD-188-220 (NET);
• operation frequency setting in 6.25 kHz, 8.33 kHz, 25 kHz or 1 MHz step;
• bandwidth for 16 kbit/s digital transmission of voice and data according to STANAG 4204, 2nd edition.

c) in FH mode
• up to 6 preset networks;
• operation in the 30.000 MHz to 87.975 MHz frequency band;
• secure TRANSEC operation and encrypted COMSEC operation;
• simplex or semi-duplex operation with frequency hopping;
• compatible with RF20, RF2050, RF2350 transceivers;
• selectable frequency hopping operating mode – FH, DFF, FCS, MIX and IFF with rapid transition to HLC/HLG or HLA;
• communication on the channel with a continuous carrier;
• establishing of communication with transceivers in fixed frequency operation mode through HLC/HLG monitoring;
• 121.500 MHz (HLA) frequency monitoring and transition to HLA with suppressed transmission;
• late net entry with synchronization request;
• master transceiver switching according to the network situation;
• transmission of warning message to all network participants;
• mutual authentication;
• selective communication of MASTER with a selected SLAVE transceiver;
• send and receive short text messages with a maximum length of 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.