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| ROTEL RT-622 |
|
| 49,000yen(around the 1973 time) |
The FM/AM tuner which supplied the newest circuitry
technologies, such as IC.
Low noise FET and the triple variable
condenser are adopted as FM front end part.
IC circuitry technology is
adopted as IF stage and the MPX stage.
The ceramics filter is adopted.
The muting and the MPX filter are carried.
Two syntony
indications meter is carried.
Two output-terminals are carried.
|
| Form |
FM/AM tuner |
| <FM tuner part> |
| Antenna impedance |
300-ohm equilibrium
75-ohm unbalance
|
| Sensitivity (IHF) |
1.7 microvolts |
| THD |
0.5% or less |
| S/N ratio |
70dB or more |
| Image stonewalling ratio |
100dB |
| Spurious response |
100dB |
| Intermediate-frequency-jamming ratio
|
100dB |
| Capture ratio |
1.0dB |
| Selectivity |
80dB |
| Separation |
40dB(1kHz) |
| SCA supression ratio |
60dB |
| AM supression ratio |
50dB |
| <AM tuner part>
|
| Sensitivity |
20 microvolts (S/N=20dB) |
| Image stonewalling ratio |
50dB(1MHz) |
| Intermediate-frequency-jamming ratio
|
70dB(1MHz) |
| S/N ratio |
50dB |
| Selectivity |
30dB |
| <Synthesis>
|
| The semiconductor used |
Transistor: 25 pieces
FET: One piece
IC: Three pieces
Diode: 14 pieces
Ceramics filter: Five pieces
|
| Power consumption |
20VA |
| Dimensions |
Width 420x height 140x depth of 240mm
|
| Weight |
5kg |
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