Section 1 Specifications - Icom IC-28A Instruction Manual

SECTION 1 SPECIFICATIONS
1-1 GENERAL
Frequency coverage
Frequency resolution
Frequency control
Memory channels
Usable temperature range
Power supply requirement
Current drain (at 13.8V. DC)
Antenna impedance
Dimensions
Weight
1-2 TRANSMITTER
Output power
Emission mode
Modulation system
Max. frequency deviation
Spurious emissions
Microphone
1-3 RECEIVER
Receive system
Modulation acceptance
Intermediate frequencies
Selectivity
Sensitivity
Audio output
Audio output impedance
ersior
IC-28A 5, 10, 15, 20 or 25kHz (programmable)
IC-28E 12.5 or 25kHz (programmable)
CPU based 5kHz (or 6.25kHz) step digital PLL synthesizer
Simplex and semi-duplex capability (programmable offset)
21 channels
—10?C ~ +60°C (+14°F ~ +140°F)
13.8V DC +15% (negative ground)
AC power supply is available for AC operation.
Transmit
HIGH (25W) Approx. 6.0A
LOW ( 5W) Approx. 3.0A
Receive
Max. audio output Approx. | 800mA
Squelched Approx. | 450mA
50 ohms unbalanced
140(140)mm(W) x 50(50)mm(H) x 133(148.5)mm(D)
Bracketed values include projections
0.95kg
HIGH 25W LOW 5W
16KOF3E
Variable reactance frequency modulation
+5.0kHz
More than 60dB below carrier
600 ohm electret condenser with push-to-talk and scanning switches
(IC-28E: 1750Hz tone burst switch)
Double-conversion superheterodyne
16KOF3E
1st 17.2MHz 2nd 455kHz
More than 12.5kHz at —6dB
Less than 25.0kHz at —60dB
Less than 0.18uV for 12dB SINAD
More than 2.4 watts at 1096 distortion with 8 ohm load
4 — 8 ohms