Danita 1240AM CB Transceiver

Introduction

The Danita 1240AM CB transceiver is a high-quality product designed for long-lasting and dependable service. To get the most benefit from this device, please follow the instructions in this manual carefully.

Note: In some countries, a license may be required to own and operate two-way radios. If you are unsure, it is advisable to check with your local telecommunication authorities.

For Your Safety: The Danita 1240AM must not be used in ways that could cause harm to yourself or others. For your safety and protection, do not use the Danita 1240AM in any way other than as described in this manual.

Manufactured by: Comitel A/S, DK-2100 Copenhagen, Denmark.

Device Overview and Controls

The Danita 1240AM features a compact design with essential controls for CB radio operation.

Front Panel Controls:

• Microphone Connector (1): Connects the microphone to the front of the transceiver.
• Squelch (2): This control adjusts the noise gate. Set it to the point where background static just disappears.
• ON/OFF Switch and Volume Control (3): This is a combined knob. Turning it clockwise powers on the unit, and further turning increases the volume.
• AM/FM Switch (4): Selects between AM (Amplitude Modulation) and FM (Frequency Modulation) modes.
• Channel Selectors (5): Push buttons used to select the desired operating channel.
• TX Indicator Lamp (6): Illuminates red when the unit is transmitting.
• RX Indicator Lamp (7): Illuminates yellow when the unit is receiving a signal.
• Priority Switch CH 9 or 19 (8): Provides quick access to channels 9 or 19. Channel 9 is often designated for emergency communications in some regions. In the "CH" position, channel selection is managed by the channel selectors (5).
• Channel Display (9): Shows the currently selected channel number in large, bright digits.

Rear Panel Connections:

• ANT (10): Connect your antenna here. The antenna and its cable should have a 50 Ohm impedance and be specifically designed for the 27 MHz CB band.
• EXT (11): This jack allows connection of an external loudspeaker or headset with an 8 Ohm impedance. Connecting a device here will automatically disable the built-in speaker.
• POWER (12): Connects to a 12 Volt DC power source, such as a car battery or a power adapter. Connect the red wire to the positive (+) terminal and the black wire to the negative (-) terminal. Ensure the system has a negative ground.

Operation

1. Ensure the antenna and power supply are correctly connected as described above.
2. Set the volume control (3) to a medium level.
3. Adjust the squelch control (2) until background noise is just silenced.
4. Hold the microphone 5-10 cm (2-4 inches) from your mouth.
5. To transmit, push and hold the PTT (Push-To-Talk) switch on the microphone. Speak in a normal voice.
6. Release the PTT switch to receive.
7. Adjust the volume control (3) to a comfortable listening level when receiving a signal.

Important Note on Transmission: The PTT switch must not be operated if there is no suitable antenna connected to the ANT (10) jack. Doing so can damage the transmitter.

Specifications

Transmitter:

• Output Power: FM 4 Watt, AM 1 Watt
• Modulation Type: FM+AM
• Modulation Deviation: 1.5 kHz
• AM Modulation: 80%

Receiver:

• Sensitivity: 0.5 µV for 10 dB SINAD
• Selectivity: 60 dB at ± 10 kHz
• Squelch Sensitivity: 0.6 µV
• Audio Output Power: 0.6 µV
• Intermediate Frequency: 10.7 MHz & 455 kHz

General:

• Channels: 40 (CEPT standard)
• Power Source: 12 Volt DC
• Current Drain: Transmitter 1.3 Amp, Receiver 200 mA
• Dimensions: 135 mm (Width) x 170 mm (Depth) x 35 mm (Height)
• Weight: 950 g

Service and Troubleshooting

If the transceiver does not function correctly, first check that all connections and controls are set according to the instructions in this manual.

If the problem persists, please bring the unit to your authorized dealer, along with a brief description of the fault.

Specifications are subject to change without prior notice.