The first shortwave receivers from Trio were in Europe also sold under the brands Jennen and Lafayette.
The shortwave receiver 9R-59DS, launched in 1968, soon became very popular, the shortwave receivers R-1000, R-2000 and R-5000 set standards. Among radio amateurs, the „Twins“ receiver R-599 / transmitter T-599 are still appreciated as oldies; a variety of amateur radio transceivers improved the reputation of Trio - Kenwood until today.
Around 1980 the brand name Kenwood was used more widely, in 1986 the company was renamed Kenwood Corporation and in 1996 the addition „Trio-“ was dropped altogether.
9R-59 | approx. 1961 | Single conversion | 550 kHz - 30 MHz | AM / CW, analogue dial with bandspread on ham bands | |
9R-59DS | 1969 | Single conversion | 550 kHz - 30 MHz | AM / CW, 4 kHz filter, analogue dial with bandspread on ham bands | ![]() |
R-599 | 1970 | Double conversion | 160 - 10m - Ham bands | AM / USB/LSB, FM; linear analogue display | ![]() |
QR-666 | 1974 | Double conversion | 170-410 & 550 kHz - 30 MHz | AM / CW, analogue dial with bandspread on ham bands | ![]() |
R-300 | 1976 - 1979 | Double conversion | 170-410 & 550 kHz - 30 MHz | AM / CW, analogue dial with bandspread on ham bands | ![]() |
R-820 | 1978 | Double conversion | 6 ham and 5 broadcast shortwave bands | AM / USB/LSB, digital display 0.1 kHz, PBT, notch, NB | ![]() |
R-600 | 1982 | Triple conversion | 500 kHz - 30 MHz | AM / USB/LSB, digital display 1 kHz; 6 / 2.7 kHz IF filters | ![]() |
R-1000 | 1979 | Double conversion | 200 kHz - 30 MHz | AM / USB/LSB, digital display 1 kHz; 12 / 6 / 2.7 kHz IF filters | ![]() |
R-2000 | 1983 | Triple conversion | 150 kHz - 30 MHz | AM / USB/LSB, FM, digital display 0.1 kHz; 6 / 2.7 kHz IF filters, 10 memories | ![]() |
R-5000 | 1987 | Triple conversion | 100 kHz - 30 MHz | AM / USB/LSB, FM, digital display 10 Hz; 6 / 2 kHz filter, PBT, notch, NB, 100 memories, direct frequency input | ![]() |
RZ-1 | 1988 | Triple conversion | 500 kHz - 905 MHz | AM / USB/LSB, FM n/w, digital display 5 kHz, 100 memories |