Icom IC-A4 instruction manual Specifications, DGeneral DTransmitter, DReceiver

DGeneral

DTransmitter

• Frequency coverage

: TX

118 to 136.975 MHz

• Output power

: 3.7 W (PEP)

typical

RX

108 to 136.975 MHz

1.0 W (CW)

typical

• Mode

: AM (6K00A3E)

• Modulation

: Low level modulation

• Number of memory channels

: 19

• Modulation limiting

: 80 to 100 %

• Acceptable power supply

: 9.6 V DC nominal

• Audio harmonic distortion

: Less than 10 %

(negative ground)

(authorized battery packs)

(at 60 % modulation)

• Usable temp. range

: –10˚C to +50˚C

• Hum and noise ratio

: More than 35 dB

• Frequency stability

: ±10 ppm (0˚C to +50˚C)

• Spurious emissions

: More than 60 dB

• Current drain

:

DReceiver

Tx

1.2 A (CW) max.

0.7 A (CW) typical

• Receive system

: Double conversion

Rx

55 mA typical

(at stand by)

superheterodyne

250 mA max.

(at AF max.)

• Intermediate frequencies

: 1st

28.95 MHz

• Antenna impedance

: 50 Ω (nominal)

2nd

450 kHz

• Dimensions

: 58(W)✕140.5(H)✕32.3(D) mm

•Sensitivity (with 50 Ω load)

: 1 µV (at AM 6dB S/N)

(projections not incl.)

• Squelch sensitivity

: 1 µV

• Weight (with BP-195)

: 425 g

(with 50 Ω load)

• Selectivity

: 8 kHz (at 6 dB)

25 kHz (at 60 dB)

• Spurious response

: More than 60 dB

• Audio output power

: 500 mW (at 10% distortion

(at 9.6 V DC)

with an 8 Ω load)

• Noise and hum

: More than 25 dB

• External SP connector

: 3-conductor 3.5 (d) mm/8 Ω