Pioneer FM-B101
¥ 19,900 (around the early 1960 s)
Commentary
A general monophonic amplifier for AM/FM/SW broadcasting.
The FM Tuner section consists of Foster Seeley detection, one high frequency amplification stage, three intermediate frequency amplification stages, and one limiter stage.
6BM8 push-pull circuit is adopted for the amplifier section, and self-bias system is adopted.
Equipped with tone control and loudness control.
Model Rating
| Type | Stereo receiver |
| Tuner Section | |
| Circuit system | FM : Foster Shear detection, 1 stage high frequency amplification, 3 stages intermediate frequency amplification, 1 stage limiter AM : Superheterodyne MW-SW : 2-band (with intermediate frequency band) |
| Receiving band | FM : 76 MHz to 108 MHz AM : 535 kHz to 1605 kHz SW : 3.8 MHz to 12 MHz |
| Sensitivity | FM : 8 μ V (95 MHz detection output 100 mV, 30% modulation) AM : 100 μ V (1 MHz detection output 100 mV, 30% modulation) SW : 300 μ V (8 MHz detection output 100 mV, 30% modulation) |
| Amplifier Unit | |
| Circuit system | 6BM8 Push-Pull, Self Biased |
| Maximum power output | 10W |
| Distortionless output | 7W (1 kHz, 1% or less distortion factor) |
| Frequency characteristic | 20 Hz ~ 50 kHz ± 1 dB (Main Amplifier Output 500 mW) |
| Residual noise | 0.3 μ W or less (Tone Control Flat, Volume Minimum) |
| Input sensitivity (1 kHz input required for output of 7W) |
MAG:2.5mV X'tal:2.5mV Aux:150mV |
| Equalizer | MAG : NF Type RIAA |
| Tone control | CR Type, Bass/Treble |
| Loudness control | ON-OFF enabled |
| Output terminal | For Speaker : 8 Ω / 16 Ω Tape rec connector |
| <General> | |
| Vacuum tubes and diodes used | 12-ball 2-stone configuration 6AQ8x2 6BA6x3 6BE6x1 12AX7x2 6CG7x2 6BM8x2 6E5x1 6CA4x1 OA-70x2 |
| Power supply voltage | 100 VAC / 117 V (Switching Type), 50Hz/60Hz |
| External dimensions | Width 360x Height 137x Depth 310 mm |
| Weight | 8.5kg |