- 8 -
OPERATION
A
5.
RF GAIN CONTROL:
This control is used to reduce the gain of the RF amplifier
under strong signal conditions.
6.
SWR CAL CONTROL:
This SWR CAL control allows the user to calibrate the
SWR meter.
7.
TALKBACK CONTROL:
Adjust this knob for desired volume of Talkback. This is
used to monitor your own voice. Or example, you could use this feature to compare
different microphones.
8.
CHANNEL SELECTOR:
This control is used to select a desired transmit and
receive channel.
9.
FRONT PANEL METER:
The Front Panel Meter allows the user to monitor signal
strength, RF output power and SWR level.
10.
S-RF/CAL/SWR SWITCH:
In the S-RF position, the meter will indicate the strength
of the signal being received, as well as the relative RF output of transmission. When
calibrating the SWR meter, you need to put this switch in the CAL position. To use
the meter to measure the standing wave ratio, turn the switch to the SWR position.
11.
ANL/OFF SWITCH:
In the ANL position, the Automatic Noise Limiter (ANL) in
the audio circuits is activated.
12.
NB/OFF SWITCH:
In the NB position, the Noise Blanker (NB) is activated. The NB
is very effective in eliminating repetitive impulse noise such as ignition interference.
13.
PA/CB SWITCH:
Select the mode of operation. In the PA position, the radio acts as
public address amplifier. Your voice will come out of the speaker that is plugged into
the PA. SP. jack on the rear panel. The radio does not operate when you are in the PA
mode. In the CB position, the PA function is disabled and the radio will transmit and
receive on the speaker that is connected.
14.
TONE SWITCH HI/LO:
This switch changes tone quality in receive only. In LO
position, bass is increased and in HI position, treble is increased.
15.
CH19/NORMAL SWITCH:
Channel 19 switch is used for instant to information
channel 19.
16.
TX/RX LED:
The Red LED indicates the unit is in the transmit mode. The Blue LED
indicates the unit is in the receive mode.
- 9 -
OPERATION
A
17.
ANT LED:
This LED lights red when your SWR is higher than about 3:1. This is not
an exact indicator of 3:1 SWR, but it is an indication that you should check your SWR
reading.
18.
CHANNEL DISPLAY:
The channel display indicates the current selected channel.
REAR PANEL
1.
ANTENNA:
This jack accepts 50 ohms coaxial cable with a PL-259 type plug.
2.
DC POWER:
This accepts 13.8V DC power cable with built-in fuse. The power cord
provided with the radio has a black and red wire. The black goes to negative and red
goes to positive.
3.
EXT. SP:
This jack accepts 4 to 8 ohms, 5 watts external speaker. When the external
speaker is connected to this jack, the built-in speaker will be disabled.
4.
PA SP.:
This jack is for PA operation. Before operating, you must first connect a PA
speaker (8 ohms, 4W) to this jack.