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JRC NRD-535

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Desktop Shortwave receiver

The Japan Radio Company NRD-535 affords general coverage reception from 90 to 30000 kHz in AM, USB, LSB, CW, RTTY, FAX and narrow FM modes. A triple conversion superheterodyne circuit is employed to provide superb sensitivity and image rejection. Japan Radio has designed a special high-speed 1 Hz step PLL synthesizer to provide you with 1 Hz tuning resolution never before available. Display resolution is 10 Hz via a gorgeous display. A sophisticated 200 channel non-volatile scanning memory stores frequency, mode, AGC, ATT and IF filter selection. Channels can be scanned at a user-defined rate (.5 to 5 seconds/channel). Sweep reception can be adjusted from .05 to .5 seconds/step. Japan Radio's reputation for extreme stability continues with only ± 2 PPM drift (after 1 hour) making the NRD-535 the inevitable choice for the demanding non-voice modes such as Morse code, RTTY and FAX. Four independent filter positions are available. The WIDE position features a 4 kHz (@ -6dB) filter. The INTERmediate position features a 2 kHz (@ -6dB) filter. The NARRow and AUXiliary positions are not filled. (An empty AUX position results in a +12 kHz bandwidth). The AUXiliary positions can be used to mount optional filters. Any filter may be used with any mode (except FM). This is an exceptional feature that provides listener flexibility. The keypad features both MHz and kHz input. The dual-width noise blanker can be used to reduce or eliminate pulse noise (like auto ignition or the "woodpecker"). Other front panel controls include: SQUELCH, AF and RF GAIN and TONE. An AGC button permits the selection of AGC FAST, SLOW or OFF. The DIMMER button offers four brightness display levels. A built-in 24 hour clock timer is provided. The TIMER permits unattended listening/recording. The receiver can be programmed to be turned on at a particular time (on a set frequency, mode, bandwidth, etc.) and then turn off at a programmed time. A timer-out terminal connection is provided on the back panel of the set to activate a tape recorder. The NRD-535 contains a built-in RS-232 computer interface. There are antenna inputs for wire or coax fed. The AC input voltage is user selectable.

The NRD-535 offers Pass Band Shift (PBS). This effective control varies the apparent intermediate frequency for the IF filter by ± 1 kHz without changing the receiving frequency. This is a powerful means of eliminating or reducing troublesome adjacent channel interference. Because of the overcrowded nature of today's HF spectrum, annoying heterodynes can be found with increasing regularity. The Notch Control permits the listener to go into the signal and sharply "slice-out" the offending tone with very little loss in fidelity to the desired station. Notch attenuation is -40 dB or more.

Specifications
Type
Desktop Amateur HF Receiver 
Frequency range RX
0.09-30 MHz 
TX
Frequency stability
±10 ppm 5-60 mins ±2 after 1 hour 
Tuning steps
0.001 kHz 
Filters
Receiver
Modulations
AM / N-FM / CW / USB / LSB / RTTY / FAX 
Sensitivity
0.5 µV 1.6-30 MHz SSB/CW S+N/N=10dB 
Selectivity
AUX (12 kHz)
WIDE > 4 kHz
INTER > 2 kHz
NARR > 1 kHz in "D"
[FM] > 12 kHz 
Receiver system
Triple conversion superheterodyne 
IF-frequencies
1st: 70.45399 MHz
2nd: 455 kHz
3rd: 97 kHz 
Image rejection
> 70 dB (1.6 - 30 MHz) 
Audio output
1 W @ 4 ohms 
Transmitter
Modulations
RF-output
Connections
Antenna
SO-239 + Klemmen / schroeven 
Impedance
50 / 600Ω 
Electrical
Power requirements
13.8V DC or mains 
Current drain RX
TX
Physical
Dimensions (w×h×d)
330 × 130 × 280 mm (12.99 × 5.12 × 11.02 in)  
Weight
9.07 kg (20 lbs)  
Form factor
Desktop 
Manufactured
Between 1991 and 1998  
Other features
Memories
200 channels in 1 banks @ 5 chn/sec 
Usage
Amateur / Ham radio operators 
Manufacturer
JRC 
Model
NRD-535
Features
 
Manuals, Diagrams and Brochures
 
None available  
 
 
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