Wj-8718-19/Fe Hf Receiver Specifications - Watkins-Johnson Company WJ-8718-19/FE Instruction Manual

GENERAL DESCRIPTION WJ-8718-19/FE HF RECEIVER
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Table 1-1. WJ-8718-19/FE HF Receiver Specifications
Tuning Range 5 kHz to 99.99999 MHz.
Detection Modes Standard: AM, FM, CW, USB and LSB
Frequency Display 7 digit, LED's.
Frequency Resolution/Readout 10 Hz
Frequency Stability 6 x ^-8 per day> 2 x 10"6 per year.
Input Impedance 50 0hms, unbalanced, nominal.
Antenna Input Protection The antenna input withstands the
effects of RF power to +15 dBm and
static build-up.
IF Bandwidths (3 dB) Standard: 0.3, 1, 3.2, 6, and 50 kHz
IF Shape Factor IF BW 60 dB: 3 dB typical
0.3 kHz 7.0:1
1.0 kHz 4.5:1
3.2 kHz 2.5:1
6 kHz 2.3:1
50 kHz 1.8:1
Sensitivity (0.2-100 MHz, see CW Sensitivity for
extended frequency range).
AM Sensitivity J e
(6.0 kHz IF Bandwidth) A 1.7 uV signal 50% AM modulated at a
400 Hz rate produces at least a 10 dB
_,„. ^ .,. ., (S+N)/N ratio at the audio output.
FM Sensitivity v
(50 kHz IF Bandwidth) A 4.5 uV signal FM modulated at a 400
Hz rate to a 15 kHz peak deviation
produces at least a 17 dB (S+N)/N ratio
at the audio output.
CW Sensitivity
(0.3 kHz IF Bandwidth)
200 kHz-100 MHz A 0.4 uV signal produces a 16 dB
(S+N)/N ratio at the audio output.
50 kHz-200 kHz A 0.63 uV signal produces a 16 dB
(S+N)/N ratio at the audio output.
15 kHz-50 kHz A 1.4 uV signal produces a 16 dB
(S+N)/N ratio at the audio output.
5 kHz-15 kHz A 63 uV signal produces a 16 dB
(S+N)/N ratio, typically at the audio
output.
USB and LSB Sensitivity
(2.2 kHz SSB Bandwidth) A 0.56 uV signal produces a 10 dB
(S+N)/N ratio at the audio output.
Gain Control Modes Manual, Fast AGC, Slow AGC.
AGC and Manual Range 100 dB, minimum.
AGC Threshold 3.0 uV, typical.
AGC Attack Time 15 ms, maximum.
AGC Release Time Fast AGC: 25 ms, maximum.
Slow AGC: 4 sec, maximum.
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