RX - 340 HF DSP

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Specifications
FREQUENCY COVERAGE: 50kHz - 30 MHz at typical sensitivity. Tunable down to 0 MHz with degraded performance (see Sensitivity tables) MODE: USB, LSB, ISB, CW, AM, Synchronous AM, FM; all standard.

TUNING RESOLUTION: 1 Hz steps.

FREQUENCY STABILITY: using built-in TCVCXO, provides +/-1 PPM over entire operating range 0 - 50 degrees C.

ACCURACY: All internal oscillators are locked to either internal or external frequency standard.

EXTERNAL FREQUENCY REFERENCE: 1, 2, 5, or 10 MHz ( +/- 1 PPM, 200 mv p-p into high impedance load). Receiver automatically switches to this reference upon application, at power up or after any serial link activity.

SPURIOUS RESPONSES: All spurious less than -119 dBm equivalent input - preamp on.

IMAGE REJECTION: 90 dB typical, 80 dB minimum

BFO: Tunable in CW mode only, +/- 8 kHz. Tuning in 10 Hz steps. Fixed frequency in SSB/ISB, disabled in AM and FM.

SYNTHESIZER LOCK TIME: 10 msec typical

ANTENNA INPUT : 50 ohm, unbalanced, BNC connector. 2.5:1 VSWR max @ receiver's tuned frequency.

SELECTIVITY : 57 bandwidths selectable from .1 kHz - 16.0 kHz. Shape factor 1.5:1 or better. (6 to 60 dB) Bandwidth is fixed at 3.2 kHz in ISB mode, and at 4 kHz - 16 kHz in SAM mode. Minimum bandwidth is 600 Hz in FM mode.

GROUP DELAY : no more than .1 ms variation over passband of 300 Hz to 3050 Hz.

ULTIMATE REJECTION: 70 dB minimum regardless of filter selected. L.O.

PHASE NOISE: -120 dBc/Hz @ 20 kHz offset typical, -110 dBc/Hz maximum.

IF REJECTION: 90 dB typical, 80 dB minimum.

MEMORIES: 100 memory store and recall.

OPERATING TEMPERATURE RANGE : 0 - 50 degrees C @ full specification. -10 to 60 degrees C with degraded performance.

SENSITIVITY:






(PREAMP OFF)


(PREAMP ON)
Mode BW SINAD Typical
dBm/uV Min
dBm/uV Typical
dBm/uV Min
dBm/uV
AM (50% mod @400 Hz) 6.0 kHz 10 dB -103/1.6 -101/2.0 -112/.56 -108/.9
FM (6 kHz dev @ 1 kHz mod) 16.0 kHz 16 dB -102/1.8 -100/2.2 -108/.9 -104/1.4
USB/LSB/ISB 3.2 kHz 10 dB -112/.6 -107/.7 -119/.25 -115/.4
CW .3 kHz 16 dB -116/.35 -114/.45 -124/.14 -120/.22

SENSITIVITY: LOW FREQUENCY RANGE (PREAMP OFF)

Mode


Frequency


Typical
dBm
CW @ 300 Hz BW
SINAD - 16 dB >500 kHz -116 dBm/.35 uV
100 kHz -115 dBm/.4 uV
50 kHz -114 dBm/.45 uV
20 kHz -107 dBm/1 uV
15 kHz -104 dBm/1.4 uV
10 kHz -94 dBm/4.5 uV
5 kHz -82 dBm/18 uV

DYNAMIC RANGE:

Mode


Noise Figure (dB)
Typ Min


3rd Order Intercept (dBm)
Typ Min
10 dB PREAMP ON 10 14 20 15
PREAMP OFF 17 19 30 25
15 dB ATTEN 32 34 45 40

2nd ORDER INTERCEPT: 75 dBm typical, 60 minimum.

WIDEBAND OUTPUT, 1ST MIXER: 45.455 MHz center frequency

IF OUTPUT, POST DSP: 455 kHz center frequency, bandwidth determined by filter selection

SIGNAL MONITOR OUTPUT, DELAYED AGC: 455 kHz, 16 kHz bandwidth, AGC delayed 40 dB

SIGNAL MONITOR OUTPUT, 2ND MIXER, NO AGC: 455 kHz, 16 kHz bandwidth

AGC: Fast, medium, Slow, Programmable. Manual gain setting is provided in all four modes, adjustable over 120 dB range. DUMP feature provided in all modes.

MODE ATTACK (dB/ms) HANG (sec) DECAY (dB/sec.)
FAST 0.8 0 1200
MEDIUM 0.8 0 100
SLOW 0.8 0 25
PROGRAMMABLE 0.01-1.0 0.01-99.9 0.01-99.9

AUDIO LINE OUTPUT: 0 dBm (+/- 3 dBm) Two 600 ohm outputs (one for each sideband in ISB mode ) to DB-15 connector, ungrounded center tap. In all other modes, signal is mono. Terminals may be grounded or shorted together without damage. Two additional mono outputs are provided, one AC coupled, one DC coupled.

HEADPHONE OUTPUT: 1/4" stereo phone jack. Stereo in ISB mode, switchable to LSB, USB or both. Mono in all other modes. 10 mw maximum into 600 ohms. Front panel volume control.

DIGITAL DATA OUTPUT: Provides post DSP IF and audio information in both serial and parallel data streams.

POWER REQUIREMENTS: 90-264 VAC, 48-440 Hz @ 30 watts nominal. Removable six foot line cord included.

DIMENSIONS: 5.25"H x 19"W (3U). Chassis depth 12.5" ( including front panel knobs, handles and rear panel connectors ).

WEIGHT: 12.5 lbs.

ADDITIONAL FEATURES:

Squelch: all mode

Passband Tuning: +/- 2 kHz in USB, LSB and CW

Mute: for use in transmit/receive applications, mutes audio and IF outputs. (revised 3/6/00)

Para mais informações: [Tens de ter uma conta e sessão iniciada para poderes visualizar este link]

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