1-5
1-2 SPECIFICATIONS:
Applicable from 50 kHz to 30 MHz, unless otherwise stated.
Power Supply: Internal, accepts 48-440 Hz line power, 90-264 VAC. 30 watts nominal.
Frequency Tuning System:
Tuning Range: 50 kHz to 30 MHz at typical sensitivity. Tunable to 0 MHz with
degraded performance.
Tuning Increment: 1 Hz minimum.
Synthesizer lock time: 10 mS nominal.
BFO: Tunable in CW mode only, ±8 kHz, 10 Hz steps. Fixed frequency in SSB and ISB
modes, disabled in AM and FM modes.
Accuracy: All internal oscillators may be locked to either internal or external frequency
standards. The internal reference is adjustable by a continuously variable trimmer,
allowing calibration to any desired accuracy.
Stability (internal standard): ±1 ppm within the 0-50 degrees C operating range.
External Frequency Standard: 1, 2, 5, or 10 MHz ±1 ppm, 500 rnV-2V p-p, high
impedance load. The receiver automatically detects and uses the external standard upon
application, at power-up, or after serial link activity. If the external standard slews far
outside the ± 1 ppm specified, internal circuitry will lose lock until the input returns to
within specification, or will re-lock at the next power-up or serial activity provided the
input is within spec. at a valid reference frequency (1, 2, 5, or 10 MHz). A frequency-
out-of-lock condition is always reported over the serial link. Removal of the external
frequency standard input immediately returns the receiver to the internal standard.
Tuning Method: Local tuning via direct keypad entry, step-arrow keys, or main tuning
knob. Remote timing via multi-drop RS-232.
Frequency Indication: Local indication via main alphanumeric display, 1-Hz resolution.
Remote frequency status reported via the RS-232 serial link.
Interface Connections:
RF Input:
Impedance: 50 ohms nominal
VSWR: 2.5:1 maximum in preselector passband.
Connector: Rear-panel BNC
Protection: Internal Surge Protector
Balanced Line-level Audio Output:
Two 600-ohm Lines
Level: 0 dBm nominal, center-tapped, ungrounded.
Connector: DB-15, 3 pins.
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