====== Japan Radio Company tabletop receivers ====== The [[Japan Radio Company]] had an excellent reputation for it's maritime communications equipment, until 1977, when JRC launched a line designed for the amateur radio market, offering cleanly manufactured professional technology at an acceptable price. The company immediately earned an excellent reputation among radio amateurs. In the mid-1960s, a tube receiver with linear frequency dial 1 was already available: the [[NRD-1]] and a slightly slimmed-down version, the NRD-2. The NRD-10 series appearing 1974 was equipped with a digital frequency display. Parallel to the NRD-71 series of double conversion receivers with digital frequency display, the [[NRD-505]] appeared in 1977 as JRC's first receiver built for the amateur market, the standard version covered the range up to 30 MHz and had a price of US$ 2250 and could be equipped with a 4-memory option for an additional charge. This receiver, as well as its popular successor [[NRD-515]], could be operated in conjunction with a corresponding transmitter and was distinguished by its extremely simple operation and excellent signal post-processing as well as mechanical workmanship. The [[NRD-515]] also had an external memory option with 24 or 96 memory channels and a today very rare external frequency input keypad available for a hefty surcharge. The [[NRD-525]], which was presented in 1986 was considered as a reference receiver for a long time, it had a built-in frequency input keypad and 200 memories, search options and passband tuning. After the [[NRD-535]], the [[NRD-545]], the first receiver with digital signal processing (DSP), was introduced in 1998. In parallel, a lower-end set, the [[NRD-345]], was sold since 1997 as an entry-level model. On the other side of the spectrum, the professional receiver NRD-301A/302A was affordable for a few enthousiasts at a price of around US$10,000. ===== Tabletop receivers from JRC ===== {{tablelayout?colwidth="85px,-,110px,-,-,150px"}} |[[NRD-1|NRD-1E]]|1965 / 67|[[Triple conversion]]|90 kHz - 30 MHz|linear analogue display|[[NRD-1|{{:images-small:jrc-nrd1e.jpg?200|}}]]| |[[NRD-10]]|1974|[[Triple conversion]]|100 kHz - 30 MHz|digital display, 16 memories, solid state| | |[[NRD-1107]]|1977|[[Double conversion]]|1.6 - 25 MHz marine radio bands|Digital display, frequency selection with decade switches|{{:images-small:jrc-nrd1107d.jpg?200|}}| |[[NRD-71]]|ca. 1979|[[Double conversion]]|100 kHz - 30 MHz|digital display, memory option| | |[[NRD-93]]|approx. 1984|[[Double conversion]]|90 kHz - 30 MHz|digital display, 60 memories| | |[[NRD-301A]]|approx. 1977|[[Double conversion]]|90 kHz - 30 MHz|digital display, 300 memories, no keypad|{{:images-small:jrc-nrd301.jpg?200|}}| |[[NRD-505]]|1977|[[Double conversion]]|100 kHz - 30 MHz|digital display, optional 4 memories, matching transmitter NSD-500|[[NRD-505|{{:images-small:jrc-nrd505.jpg?200|}}]]| |[[NRD-515]]|1979|[[Double conversion]]|100 kHz - 34 MHz|Digital display, PBT, optional 24 / 96 memories, optional external frequency keypad, matching transmitter NSD-515|[[NRD-515|{{:images-small:jrc-nrd515.jpg?200|}}]]| |[[NRD-525]]|1986|[[Double conversion]]|90 kHz - 34 MHz|Digital display, 200 memories, PBT, noise blanker, optional PC control board & RTTY decoder|[[NRD-525|{{:images-small:jrc-nrd525.jpg?200|}}]]| |[[NRD-535]]|1991|[[Triple conversion]]|100 kHz - 30 MHz|Digital display, 200 memories, PBT, noise blanker, ECSS, PC interface, optional RTTY decoder|[[NRD-535|{{:images-small:jrc-nrd535.jpg?200|}}]]| |[[NRD-545]]|1998|[[Triple conversion]]|100 kHz - 30 MHz|Digital display, 1000 memories, PBT, [[DSP]], ECSS, PC interface, integrated RTTY decoder|{{:images-small:jrc-nrd545.jpg?200|}}| |[[NRD-345]]|1997|[[Double conversion]]|100 kHz - 30 MHz|Digital display, 100 memories, noise blanker, synchronous detector, PC interface|{{:images-small:jrc-nrd345.jpg?200|}}|