Le Barrett 2050 est un émetteur-récepteur polyvalent et robuste de 1,6 MHz à 30 MHz, 125 W PEP, éprouvé sur le terrain qui peut être facilement configuré pour des besoins opérationnels et précis des clients. Le Barrett 2050 offre tous les modes communs de transmission HF, tous les formats actuellement utilisés appel sélectif, établissement de la liaison automatique MIL-STD 188-141B et une nouvelle génération, facile à utiliser, l'option Frequency Hopping. Le 2050, logé dans un chassis étanche en aluminium léger et extrêmement robuste, répond à la norme MIL-STD 810G pour la chute, la poussière, la température, les chocs et vibrations. En associant l'émetteur-récepteur 2050 avec d'autres produits de la série 2000, celui-ci offre une connectivité e-mail, fax, téléphone et données au sein d'un réseau HF et au-delà à la fois au réseau téléphonique international et l'internet. Caractéristiques du Barrett 2050
Appel sélectif
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Standards | Exceeds/complies with Australian/ New Zealand standard AS/NZS 4770:2000 and AS/NZS 4582:1999 Exceeds/complies with European standard ETSI 300 373 and associated Amendment A Exceeds/complies with EMC and vibration standard IEC 945 Complies with MIL-STD 810G for drop, dust, temperature, shock and vibration |
Transmit frequency range | 1.6 MHz to 30 MHz (continuous) |
Receive frequency range | 250 kHz to 30 MHz (continuous)* |
Channel capacity | Up to 500 programmable channels (simplex or semi-duplex) |
Frequency resolution | 10 Hz program mode 1 Hz tunable receiver |
Frequency stability | ±10 Hz or better than 0.3 ppm over temperature range -30°C to +70°C |
Operating modes | J3E (USB, LSB) - H3E (AM) - J2A (CW) - J2 (AFSK) Optional J2B (AFSK) with narrow filter |
Operating temperature | -30°C to +70°C humidity 95% relative, non-condensing |
Frequency hopping | 25 or 5 hops per second with external syncronisation unit (ESU) supplied when the option is fitted. The Barrett frequency hopping system requires no master station, all stations are synchronised and ready to communicate on switch on, synchronisation is not effected by propagation or local interference and there is no late entry synchronisation delay |
Supply voltage | 13.8 V DC +20% / -10% (negative ground) polarity protected. Over voltage protected. 100 to 260 VAC or 11 to 16 V DC with power supply |
Current consumption | 470 mA standby (muted, back lighting off) |
Selcall system | Based on CCIR 493-4, four and six digit systems. Protocol available for free distribution. Fully compatible with other major HF manufacturers' four and six digit systems including encrypted systems |
Switching speed | Less than 15 mS Tx to Rx, Rx to Tx |
* reduced sensitivity 250 kHz to 500 kHz
Sensitivity | -120 dBm (0.224 uV) for 10 dB SINAD - J3E Mode pre-amp on -110 dBm (0.708 uV) for 20 dB SINAD - J3E Mode pre-amp off |
Selectivity J3E | -1 kHz and + 4 kHz better than 50dB -2 kHz and +5 kHz better than 55dB -5 kHz and +8 kHz better than 60dB |
Selectivity J2B (optional) | -500 Hz and +500 Hz better than 60 dB The level of an unwanted signal above the level of a wanted signal that will reduce the SINAD of the wanted signal from 20 dB SINAD to 14 dB SINAD |
Blocking | -20 kHz and +20 kHz better than 71 dB - The level of an unwanted signal above the level of a wanted signal that will reduce the SINAD of the wanted signal from by 6 dB or cause and output level change of 3 dB |
Intermodulation | Better than 89 dBµV - The level of two unwanted signals, that are within 30 kHz.of the wanted signal, above the level of a wanted signal that reduces the SINAD of the wanted signal to 20 dB |
Spurious response ratio | Better than 70 dB |
Reciprocal mixing | Better than 105 dBµV |
In-band IMD | Better than 34 dB |
Audio output | 4 W into 4 ohm at less than 2% distortion |
Audio response | Less than 6 dB variation from 350 Hz to 2700 Hz. |
Input protection | Better than 30 V RMS from a 50 Ohm source |
RF output power | 125 W PEP voice ±1.5dB or 30 W PEP voice ±1.5dB or 10 W PEP voice ±1.5dB |
Duty cycle | 100% two-tone input signal with fan option |
Intermodulation Products | better than -31 dB below PEP (25 dB below two tone peak) |
Audio frequency response | Less than 6 dB variation 350 Hz to 2750 Hz |
Current consumption | Voice average less than 9 Amps typical Two tone less than 12 Amps typical |
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