EK896

Specifications

High performance, triple-conversion, VLF / HF search receiver. After digitization of the third IF in a 16-bit ADC the processor assumes all signal processing tasks including 13 bandwidths, passband tuning, double notch filter. High dynamic range with +35 dBm IP3. 12 hardkeys for fast access to the setting parameters. Ideated in Germany.

Reference market : professional

EK896 specifications

General

Frequency coverage
0.0100 ~ 30.0000 MHz
Mode
CW / FSK / LSB / USB / ISB / AM / FM
Tuning step
1 Hz min

Receiver

Sensitivity
CW	0.4uV EMF (0.1~30 MHz, 10dB S/N, BW 300 Hz, pre OFF). 0.2uV EMF (0.2~30 MHz, 10dB S/N, BW 300 Hz, pre ON)
SSB	1.0uV EMF (0.1~30 MHz, 10dB S/N, BW 2.7 kHz, pre OFF). 0.4uV EMF (0.2~30 MHz, 10dB S/N, BW 2.7 kHz, pre ON)
AM	2.7uV EMF (0.1~30 MHz, 10dB S/N, BW 6 kHz, pre OFF). 1.0uV EMF (0.2~30 MHz, 10dB S/N, BW 6 kHz, pre ON)
Selectivity [2]
CW	150 Hz (-3dB) 300 Hz (-60dB)
SSB	2.40 kHz (-3dB) 3.52 kHz (-60dB)
AM	6.00 kHz (-3dB) 8.40 kHz (-60dB)
FM	8.00 kHz (-3dB) 10.40 kHz (-60dB)
ADC (Analog to Digital Conversion)
Resolution	16 bit
IF output frequency
1.44 MHz
IF output bandwidth
10 kHz (-3dB)
Gain RF to IF
18dB
Gain flatness
± 2dB
RF preamplifier
~10dB
IP2 (2nd order intercept point)
+70 dBm typ (1.5~30 MHz)
IP3 (3rd order intercept point)
+35 dBm typ (1.5~30 MHz)
RF maximum input level
100V EMF
Image rejection
>90 dB
IF rejection
>90 dB
Spurious response
-124 dBm typ
BFO range
± 5 kHz (10 Hz steps)
PBT (Passband Tuning)
Yes
Notch filter
Yes
NB (Noise Blanker)
Yes
AGC (Automatic Gain Control)
Automatic, manual or remote. Attack time <15 ms Decay time 0.025 / 0.15 / 0.5 / 1 / 3 s
Frequency stability
± 0.5ppm with temperature from -10°C to +45°C. ± 0.1ppm with OCXO unit [1]
Synthesizer settling time
5 ms
IF (Intermediate Frequency)
1°	41.44 MHz
2°	1.44 MHz
3°	25 kHz
IF roofing filter
10 kHz
Audio response
0.3~3.4 kHz

Features

Memory
1000 channels
Display
1 Hz frequency resolution Segment-bar signal meter
Antenna
BNC 50Ω VSWR <1.5:1 (<0.25 MHz, preamplifier ON) VSWR <3:1 (>5 MHz, preamplifier ON)
IF output
BNC 50Ω
Power supply
100~240 VAC
Audio output
Jack 6.35 mm headphone
I/Q output
Baseband signal
Connections
RS-232C RS-485 BNC (1 / 5 /10 MHz reference input) IF output (1.44 MHz) IF output (0 to 40 kHz / 455 KHz)

Mechanical and environmental data

Operating temperature
from -10°C to +45°C
Dimensions
426 (W) x 132 (H) x 460 (D) mm
Weight
~11kg

Optional oven-controlled frequency standard (OCXO).
Bandwidths example, 13 standard values available.

EK896 block diagram :

Rohde & Schwarz EK896 block diagram

EK896 photo gallery :

Rohde & Schwarz EK896 photo (with R&S EK895 receiver)

EK896 review

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