JRC firm has been established in 1915, the company produced a wide variety of products including marine electronics, measuring equipments for telecommunication, radio broadcasting equipments, and amateur radio equipments. For marine radiocommunications JRC produced a wide range of apparaturs both for ships and coast radio stations, from high perfomance receivers to high power trasmitters and today continue to have a leadership in the production of GMDSS equipments.
In this review it is showed the NRD 91 receiver which is the basic model followed by NRD 92 and NRD 93, today this equipments, not longer used in maritime communications, found a place in several amateur radio and SWL/BCL stations.
Here a clip with receiver tuned on the frequency of the Italian coast radio station NAPLES RADIO c/s IQH while trasmitting NW.
Factory JRC Japan Radio Co., Ltd.; Tokyo
Principle PLL, Phase-locked loop; ZF/IF 70455/455 kHz
Solid State Transistors and IC’s
Power Supply AC 100/110; 200/ 220 and DC battery 24 Volt
Audio output 1 W on 600 ohm
Materials Metal rack
Dimensions (LxHxD) 480 x 149 x 294 mm / 18.9 x 5.9 x 11.6 inch
Notes Wave range: 90 kHz – 29.9999 MHz
Optional desktop cabinet (dimensions 489 x 190 x 305 mm, weight 11.5 kg).
Net weight 7 kg / 15 lb 6.7 oz (15.419 lb)