Pioneer F-515
¥ 29,800 (released in 1988)
Commentary
Digital synthesizer tuner that adopts silent servo circuit and CCTS circuit.
It is equipped with a silent servo circuit to cut off noise from PLL circuit and microcomputer.
By stopping the PLL circuit and microcomputer circuit after tuning is completed and receiving as an analog tuner, adverse effects such as harmonics of the clock frequency are suppressed.
By using a CCTS circuit that can receive with high sensitivity by equalizing the receiving frequency and the resonance frequency of the antenna stage, generation of distortion is greatly suppressed.
An AM servo circuit is mounted to reduce distortion of AM reception.
The AM tuning is an automatic gain control (AGC) operation, which reduces distortion by setting it to an appropriate state at the time of reception and at the completion of reception.
This greatly improves the low-frequency distortion and high-frequency characteristics of the AM.
FM/AM Random 24 station preset is installed.
A honeycomb chassis with excellent vibration characteristics and a large insulator are used to make it difficult for external vibrations to be transmitted to the circuit.
Components such as capacitors and resistors for audio equipment are also used.
ON/OFF of stereo / mono, AM servo and silent servo can be memorized.
Mode memory is installed.
DX/LOCAL mode memory is installed.
Model Rating
Type | FM/AM Digital Synthesizer Tuner |
FM Tuner Section | |
Receiving frequency | 76 MHz to 90 MHz |
Practical sensitivity | Mono : 13.2 dBf (1.26 μ V/75 Ω) |
S/N50dB sensitivity | Mono : 17.2 dBf (2.0 μ V/75 Ω) Stereo : 37.2 dBf (20.0 μ V/75 Ω) |
Signal-to-noise ratio | mono:82dB stereo:79dB |
Harmonic distortion factor (1 kHz) | mono:0.05% stereo:0.05% |
Effective selectivity | 60dB(400kHz) |
Stereo separation | 1kHz:44dB |
Frequency characteristic | 30 Hz to 15 kHz ± 0.8 dB |
Image interference ratio | 65dB |
IF interference ratio | 110dB |
AM suppression ratio | 57dB |
Antenna input impedance | 75 Ω Unbalanced Type |
<AM Tuner Section> | |
Receiving frequency | 522 kHz to 1629 kHz |
Practical sensitivity (attached loop antenna) | 350 μ V/m |
Selectivity | 40dB |
Signal-to-noise ratio | 54dB |
Image interference ratio | 40dB |
IF interference ratio | 55dB |
Rated Distortion Factor (AM Servo ON) | 0.19%(1kHz) 0.4%(100Hz) |
Antenna | Loop antenna (included) |
<General> | |
Output Level / Impedance | FM (100% modulation) : 650mV/5.1k Ω AM (30% modulation) : 150mV/5.1k Ω |
Power supply voltage | 100 VAC, 50Hz/60Hz |
Power consumption (Electrical Appliance and Material Control Law) | 10W |
External dimensions | Width 420x Height 85.5x Depth 318 mm |
Weight | 3.5kg |