Icom IC-751A Service Manual page 5

SECTION 1 SPECIFICATIONS
1-1 GENERAL
Number of semiconductors
Frequency coverage
Usable temperature range
Frequency control
Frequency readout
Frequency stability
Power supply requirements
Current drain (at 13.8V DC)
Antenna impedance
Weight
Dimensions
1-2 TRANSMITTER
RF power
Emission modes
Harmonic emissions
Spurious emissions
Carrier suppression
Unwanted sideband
Microphone
ATX variable range
: $SB_ (J3E)
: Transistors 59
(Australia, France: 61)
FETs 23
Diodes 336
ICs (Includes CPU) 64
: Ham Bands
1.8MHz ~ 2.0MHz
3.45MHz~ 4.1MHz
6.95MHz ~ 7.5MHz
9.95MHz ~ 10.5MHz
13.95MHz ~ 14.5MHz
17.95MHz ~ 18.5MHz
20.95MHz ~ 21.5MHz
24.45MHz ~ 25.1MHz
27.95MHz ~ 30.0MHz
General Coverage (Receive Only)
0.1MHz ~ 30.0MHz
> —10°C ~ +60°C (+14°F ~ +140°F)
: CPU based 10Hz step digital PLL synthesizer.
Independent transmit/receive frequency.
: 6 digit 100Hz illuminated FIP.
: Less than +200Hz from 1 to 60 minutes after power ON.
Less than +30Hz after 1 hour at 25°C.
Less than +350Hz in the range of 0°C ~ +50°C.
13.8V DC +15% (negative ground), current drain 20A maximum at 200W input.
AC power supply is available for AC operation.
: Transmitting
At 200 watts input Approx. 20.0A
Receiving
At maximum audio output Approx. 1.8A
Squelched Approx. 1.5A
: 50 ohms unbalanced.
: 8.5kg
: 306(322)mm(W) x 115(120)mm x 355(385)mm(D)
Bracketed values include projections.
200 watts PEP input
CW (AIA) : 200 watts input
FM (F3E) 200 watts input
RTTY (FIA) : 200 watts input
AM (A3E) 50 watts output
: SSB (J3E) Upper and Lower sideband
CW (ATA)
FM (F3E)
RTTY (FIA)
AM (A3E)
: More than 40dB below peak power output.
: More than 60dB below peak power output.
(Guaranteed for transmissions within the Amateur bands.)
: More than 40dB below peak power output.
: More than 55dB down with 1000Hz AF input.
: Impedance 600 ohms
Input level 12 millivolts typical
Dynamic or electret condenser microphone.
> +£9.9kHz