DENON TU-380R
TU-380R : ¥ 30,100 (released in 1989)
TU-380RG : ¥ 34,000 (released in 1990)
Commentary
FM/AM tuner with 30-station preset function and remote control.
The FM tuner section is equipped with a low impedance output circuit of 500 Ω or less so that a clear signal can be sent to any amplifier.
In addition, the PLL comparison frequency is set to 100 kHz out of the audible band to eliminate beat and noise in the audio band. In addition, the front end is designed with high sensitivity using 3-series varactor diodes and j-FET, and the IF stage is equipped with a ceramic filter with constant amplitude and constant delay characteristics.
It is equipped with an RF attenuator that prevents interference from neighboring stations and maintains stable reception.
The AM tuner uses two 3-terminal high-sensitivity ceramic filters and an LC-type filter in the IF stage to reduce distortion. In addition, a low-impedance indoor loop antenna, which is resistant to pulse noise, is attached to the short-range station reception, enabling clear reception.
Equipped with a 30-station preset function, you can perform operations such as preset channel scanning and preset up/down using the included remote control.
The ON state of the RF attenuator can also be stored in memory.
There were black model TU-380R and gold model TU-380RG with side wood.
A remote control is included.
Model Rating
Type | FM/AM Tuner |
FM Tuner Section | |
Receiving frequency band | 76.0 mhz to 90.0 mhz |
Intermediate frequency | 10.7MHz |
Antenna terminal | F Type Stopper 75 Ω Unbalanced |
Practical sensitivity | 11.2dBf |
SN ratio 50 dB sensitivity | mono:15.3dBf stereo:38.5dBf |
Effective selectivity | 50 dB (± 400 kHz) |
Capture ratio | 1.5dB |
IF interference ratio | 85dB |
Image interference ratio | 45dB |
AM suppression ratio | 50dB |
Frequency characteristic | 20 Hz ~ 15 kHz + 0.5 -1.5 dB |
Signal-to-noise ratio (corrected for audibility) | mono:82dB stereo:78dB |
Total harmonic distortion rate (1 kHz) | Mono : 0.08% at 100% modulation Stereo : 0.15% at 90% modulation |
Separability | 45dB(1kHz) |
Output level | 0.8 v (at 100% modulation) |
<AM Tuner Section> | |
Receiving frequency | 522 kHz to 1629 kHz |
Intermediate frequency | 450kHz |
Antenna terminal | Terminal type With low-impedance loop antenna |
Practical sensitivity | 18 μ V |
One signal selectivity | 35 dB (± 9 kHz) |
Signal-to-noise ratio | 53dB |
Total harmonic distortion factor | 0.6% (at 30% modulation) |
Output level | 0.25 v (at 30% modulation) |
<General> | |
Power supply voltage | 100 VAC, 50Hz/60Hz |
Power consumption | 8W |
External dimensions (including knob, leg and terminal) | TU-380R : 434 mm wide x 73 mm high x 287 mm deep TU-380RG : 470 mm wide x 75 mm high x 287 mm deep |
Weight | TU-380R:3.1kg TU-380RG:3.1kg |
Included : Wireless Remote Control RC-114 | |
BATTERY | 2 UM-4 (C 4) |
External dimensions | Width 58x Height 125x Depth 19.5 mm |
Weight | 70g (including battery) |