SCR-58 Portable AM/FM Stereo Auto-Stop Single Cassette Recorder
(140-0725) Specifications Faxback Doc. # 39074
General:
Output Power (at 10% THD): ..................................... 0.85 W/CH
Power Supply: ...................... AC Adapter, 4 C Batteries, 6 Volts DC
Dimensions (HWD): ..................... 4 15/16 x 11 11/16 x 3 3/16 Inches
(125 x 297 x 81 mm)
Weight: ......................................................... 35.2 oz.
Cassette Deck:
Tape Speed: .................................................... 1 7/8 ips
Tape System: .............................................. 4-Track Stereo
Recording System: ................................................ AC Bias
Erasing System: ............................................. Magnet Erase
Radio:
Frequency Range: ........................ FM: 88-108 MHz, AM: 530-1710 kHz
Antenna: ................................ FM: Telescoping, AM: Ferrite Rod
Detailed Specifications
Power Requirements: ............................ 120 volts AC, 60 Hz, 10 W
Room Temperature: ............................ 77 degrees F (25 degrees C)
AM Band:
Speaker Impedance: ............................................... 4 Ohms
Output readings are taken across a non-reactive load.
Output reference level is 50 mW total power.
The generator output shall terminate in an IRE loop with the loop pointing
toward the rear of the receiver.
Modulation: ............................................... 1000 Hz, 30%
NOMINAL LIMIT
Frequency Coverage: ....................... 512-1750 kHz .... 520-1720 kHz
IF: .......................................... 455 kHz .......... +/-5 kHz
Antenna Sensitivity for S/N 20 dB at 600 kHz: 600 uV/m ......... 1000 uV/m
at 1000 kHz: 400 uV/m .......... 800 uV/m
at 1400 kHz: 400 uV/m .......... 800 uV/m
ACA at Reference Level at 1000 kHz: ........... 24 dB .............. 18 dB
AGC figure of merit: .......................... 50 dB .............. 40 dB
IF rejection at 600 kHz: ...................... 40 dB .............. 38 dB
Image rejection at 1400 kHz: .................. 40 dB .............. 35 dB
Bandwidth at 6 dB down: ....................... 6 kHz ........... 4-10 kHz
Output, at 10% THD at 1000 kHz
5 mV/m, 1000 Hz, 30% modulation: ........... 850 mW ............ 750 mW
Distortion at reference output
at 1000 kHz, 30% modulation at 5 mV/m: ....... 2% .................. 5%
Whistle modulation of 2 nd or 3 rd harmonic
at 1-100 mV/m: ............................... 8% ................. 15%
Dial calibration at 530 kHz: .................... -- ........... +/-20 kHz
at 1000 kHz: .................... -- ........... +/-50 kHz
at 1700 kHz: .................... -- ........... +/-80 kHz
FM Band:
Speaker impedance: ................................................. 8 Ohm
Use resistive load:
Reference output level: ............................................ 50 mW
Signal generator impedance: ...................................... 75 Ohms
Disconnect telescopic antenna cable.
The signal voltage in this specification or test data is the voltage appear-
ing across the tuner input terminals.
Modulation: .................................... 1000 Hz, 75 kHz deviation
1000 Hz, 75 kHz (L+R: 92%, pilot: 8%) deviation for FM/stereo
NOMINAL LIMIT
Frequency coverage: ....................... *87-109 MHz ....... 88-108 MHz
IF: ......................................... 10.7 MHz ....... +/- 0.3 MHz
IHF usable sensitivity at 90 MHz: ............. 8 uV ............... 16 uV
at 98 MHz: ............. 8 uV ............... 16 uV
at 106 MHz: ........... 8 uV/m ............ 16 uV/m
Sensitivity for 50 dB S/N at 90 MHz: ......... 10 uV ............... 20 uV
at 98 MHz: ......... 10 uV ............... 20 uV
at 106 MHz: ........ 10 uV ............... 20 uV
S/N ration at 1 mV input: .................... 55 dB ............... 50 dB
FM limiting, 3 dB, at 98 MHz: ................ 10 uV ............... 20 uV
IF rejection at 98 MHz: ...................... 60 dB ............... 50 dB
Image rejection at 106 MHz: .................. 26 dB ............... 22 dB
ACA 100 uV, +/- 400 kHz: ..................... 20 dB ............... 15 dB
Audio THD, 1000 Hz, 75 kHz deviation (1 mV): ... 2% ....................3%
Dial calibration at 88 MHz: .................... -- ......... +/- 1000 kHz
at 100 MHz: ................... -- ......... +/- 1000 kHz
at 108 MHz: ................... -- ......... +/- 1000 kHz
Output power at 10% THD,
1000 Hz, 98 MHz, 22.5 kHz deviation: ...... 850 mW ............. 750 mW
Capture ratio at 1 mV, 98 MHz deviation: ...... 5 dB ............... 10 dB
Separation 98 MHz, 1 mV, 100 Hz: .............. 25 dB .............. 15 dB
1 kHz: .............. 30 dB .............. 22 dB
10 kHz: .............. 20 dB .............. 15 dB
Indicator sensitivity 98 MHz: .................. 8 uV .............. 30 uV
Tape Section
MEASUREMENT ITEM INPUT TEST TAPE NOMINAL LIMIT
Output power at 1 kHz/channel
10% distortion 4 Ohm: MTT-112BN ....... 850 .............. 750
Maximum 4 Ohm: .... MTT-112BN ...... 1200 .............. 900
Signal to noise ratio 1000 Hz: .. MTT-112BN ...... 52 dB ........... 45 dB
Distortion 1000 Hz: .. MTT-118N ......... 2% ............... 5%
Erase ratio 1000 Hz: .. Blank Tape ...... 50 dB .......... 45 dB
Channel separation 1000 Hz: .. MTT-141N ........ 40 dB .......... 32 dB
Hum and noise volume at minimum: .................. 2 mV ............ 4 mV
Wow and flutter 3000 Hz: .. MTT-111N ........ 0.20% .......... 0.35%
Frequency response (1 kHz = 0 dB),
125 Hz -6.3 kHz (Playback): .. MTT-257 ....................... +/- 6 dB
150 Hz -6 kHz (Overall): ..... -70 dB ........................ +/- 6 dB
125 Hz -6.3 kHz (Dubbing): ... MTT-257 ....................... +/- 6 dB
NOTE: Nominal specs represent the design specs. All units should be able
to approximate these - some will exceed and some might drop slightly
below these specs. Limit specs represent the absolute worst condition
that still might be considered acceptable; in no case should a unit
fail to meet limit specs.
*European models must not be able to tune below 87.5 MHz.
Specifications are typical; individual units might vary. Specifications are
subject to change and improvement without notice.
(EB 4/22/97)
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