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Delta Electronics RG4B-240


Receiver/Generator, 240 VAC with Batteries

BSW PART: RG4B-240

RG4B-240
The RG-4 Receiver/Generator is Delta's newest model in its continuing line of precision RF generators and null detection receivers for impedance bridges. The RG-4 is designed as the ideal companion instrument for Delta's OIB-1 and OIB-3 MF Operating Impedance Bridges and the OIB-2 HF Operating Impedance Bridge. These bridges and the RG-4 form a complete portable impedance measuring system.

The RG-4 operating frequency range is from 100 kHz to 29.999 MHz in 1 kHz steps. The generator output is adjustable to 10 VRMS (2 Watts), 100 kHz to 20 MHz, and 4 VRMS (0.3 Watts) above 20 MHz. Receiver sensitivity is 5 microvolts with separate front panel gain controls for RF and audio levels. Generator to receiver isolation is greater than 120 dB.

In noisy environments or under conditions of interfering signals, the generator can be modulated by an internal 50 Hz square wave and the receiver's coincidence detector circuit will provide clean positive nulls. The generator can also be modulated by an internal 400 Hz signal at 90% modulation. When operated in this manner, the receiver provides both visual and audible null indications.

Frequency selection is accomplished by a front panel keypad that controls a precision phase locked loop digital frequency synthesizer. The operating frequency is displayed on a large LCD front panel readout. To expedite field tests, nine storage registers provide recall of frequently used frequencies. Frequency increment and decrement keys provide manual sweeps of a chosen frequency in 1, 10, 100 or 1000 kHz steps. Separate 5 kHz increment and decrement keys simplify FCC required antenna impedance sweeps.

Rechargeable batteries power the unit for field measurements for two and a half hours minimum at full RF output. The AC supply/charger operates at 240 VAC. The power supply will both power the unit and charge the batteries at the same time. Automatic switching to a "trickle" charge mode maintains full charge without battery damage. The lightweight construction combined with a rugged weatherproof aluminum case make this instrument equally at home on the service bench or in the field.

Delta RG-4 Features:
• Up to 2 watts output
• 5 microvolt receiver sensitivity
• 120 dB receiver/generator isolation
• 100 kHz to 29.999 MHz operating range
• Digital frequency synthesizer design
• Easy keypad entry operation
• 9 frequency storage registers
• Coincidence detector
• Large LCD frequency display
• Battery pack for portable operation

List Price
$17,650.00
Usually Available in 1-2 Weeks
Contact us for your Discounted Price


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