SPECIFICATIONS
RECEIVE SPECIFICATIONS
384 ENVOY™ TRANSCEIVER REFERENCE MANUAL
Receive specifications
Table 30: Receive specifications
Item Specification
Type Software-defined radio
Superheterodyne/IF sampling DSP
IF frequencies 45 MHz
Sensitivity Frequency:
0.25 to 30 MHz
RF amp off:
0.5 [0.4] μV PD
–113 [–115] dBm
Frequency:
1.6 to 30 MHz
RF amp on:
0.2 [0.12] μV PD
–121 [–125] dBm
For 10 dB SINAD with greater than 50 mW audio output
Input protection Will withstand 50 V p–p RF from a 50 Ω source
Selectivity Greater than 65 [70] dB at –1 kHz and +4 kHz reference SCF USB
2400 Hz filter: –6 [–4] dB 300 to 2700 Hz
2750 Hz filter: –3 [–2] dB 300 to 3050 Hz
3000 Hz filter: –3 [–2] dB 300 to 3300 Hz
Desensitisation 10 dB SINAD reduced to 7 dB SINAD (2400 Hz filter)
−1 and +4 kHz
(ref SCF)
60 [65] dB
±10 kHz 75 [80] dB
±50 kHz 95 [100] dB
Blocking As for Desensitisation
For frequencies > ±50 kHz > 95 dB
Image rejection Better than 90 [95] dB
Spurious responses Better than 80 [85] dB
Self-generated signals > 0.15 μV PD: 20 MHz
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