Icom IC-746 Instruction Manual

46
6
FUNCTIONS FOR TRANSMIT
6-5 Speech compressor
[MIC GAIN]
[SSB]
[RF PWR]
Connect microphone here
ALC
Po
S
1
20 50
3 5 7 9 20 40 60
100%
ALC zone
[AM/FM]
[COMP GAIN]
The RF speech compressor increases the average RF
output power, improving signal strength and readability
in SSB and AM modes.
➀ Push [SSB] or [AM/FM] to select SSB or AM mode.
➁ While menu set 1 is selected, push [F3](CMP) to
turn the speech compressor ON.
•“COMP” appears when the function is ON.
➂ Set the [MIC GAIN] to the 9 to 12 o’clock position.
➃ While speaking into the microphone, adjust [MIC
GAIN] so that the ALC meter reads within the ALC
zone whether you speak softly or loudly.
➄ Use the monitor function (see previous page) to
check that any distortion to your transmitted audio
is at a minimum.

Icom IC-746 Specifications

General

Mode	SSB, CW, RTTY, AM, FM
Receiver Type	Double conversion superheterodyne
Antenna Connector	SO-239
Voltage	13.8 V DC ±15%
Impedance	50 ohms
Output Power	100 W (SSB, CW, FM, RTTY), 40 W (AM)
Current Drain	TX: 20 A
Sensitivity	AM: 2 µV
Selectivity	CW: 500 Hz (-6 dB)