Icom IC-7700 - Manual (Page 51)

3-13
D D Drive gain adjustment
The drive gain is active for all modes other than SSB
mode with speech compressor OFF. The [DRIVE] con-
trol adjusts the amplifying gain at the driver stage.
Before transmitting, monitor your selected operating
frequency to make sure transmitting won’t cause inter-
ference to other stations on the same frequency.
q Push [METER] (MF2) to select the ALC meter.
w Push [PTT] (microphone; SSB with [COMP] ON, AM
or FM), key down (CW) or push
(RTTY
or PSK) to transmit.
e While talking into the microphone, keying down or
transmitting, rotate [DRIVE] so that the ALC meter
reading is between 30 to 50% of the ALC scale. (see
left)
• Talk into the microphone at your normal voice level.
r Release [PTT], stop keying or push
again to return to receive. TRANSMIT
TRANSMIT
3
BASIC OPERATIONS
S
1
0
0
0 1
2
5 10
10
10 20
44 52V
50 100 150
200
250
15
3 1.5
I D
V D
dB
W
A
Po
SWR
COMP
ALC
5
9 + 20 + 40
+ 60dB
∞
Drive gain range
[DRIVE]
METER