Indledning
This user manual provides comprehensive instructions for the installation, operation, and maintenance of your President Johnny III USA CB Radio. Please read this manual thoroughly before using the device to ensure proper function and safety. The President Johnny III USA is a 40-channel AM CB radio designed for reliable communication in various environments, featuring advanced functions like Automatic Squelch Control (ASC) and Weather Alert.
Sikkerhedsoplysninger
Always observe the following safety precautions to prevent damage to the unit or injury to yourself:
- Strømforsyning: Ensure the radio is connected to a 12V or 24V DC power source as specified. Incorrect voltage kan beskadige enheden.
- Antenne: Always connect a properly tuned CB antenna before transmitting. Transmitting without an antenna or with a poorly tuned antenna can damage the radio's final amplivligere.
- Installation: Install the radio in a secure location where it will not obstruct driving or interfere with vehicle safety systems.
- Fugtighed: Keep the unit away from water and excessive moisture. This product is not water resistant.
- Service: Forsøg ikke selv at åbne eller servicere enheden. Overlad al service til kvalificeret personale.
- Forslag 65 Advarsel: Dette produkt kan udsætte dig for kemikalier, som staten Californien kender til at forårsage kræft og fødselsdefekter eller anden reproduktionsskade.
Pakkens indhold
Når du åbner pakken, skal du kontrollere, at alle varer er til stede og i god stand:
- President Johnny III USA CB Radio Unit
- Microphone with coiled cord
- Monteringsbeslag
- Strømkabel
- Brugervejledning (dette dokument)
Note: Mounting bolts are not included and must be sourced separately.
Figure 1: Product packaging for the President Johnny III USA CB Radio.
Produkt overviewBetjening og funktioner
The President Johnny III USA CB Radio is equipped with a range of controls and features for optimal performance and user convenience.
Figure 2: Front panel and microphone of the President Johnny III USA CB Radio, showing main controls and display.
Kontrol på frontpanelet:
- VOL-SQ (Volume/Squelch) Knob: Controls the audio output level and adjusts the squelch threshold.
- Channel Rotary Switch: Selects one of the 40 available AM channels.
- RF GAIN Knob: Adjusts the receiver sensitivity to optimize signal reception.
- Multifunktions LCD-skærm: Shows current channel, S-meter, and various function indicators.
- LÅS -knap: Låser tastaturet for at forhindre utilsigtede ændringer.
- GEM Knap: Used for saving settings or memory channels.
- SCAN knap: Starter kanalscanning.
- NB/HI-CUT Button: Activates Noise Blanker and High-Cut filters for improved audio clarity.
- ALERT Button: Activates the Weather Alert function.
- FARVE knap: Changes the backlight color of the LCD display.
- MEM (Memory) Button: Accesses stored memory channels.
- ROGER BEEP Button: Toggles the Roger Beep function on/off.
- KEY BP (Key Beep) Button: Toggles the key beep sound on/off.
- 9/19 knap: Provides quick access to emergency channel 9 and common calling channel 19.
- WX (Weather) Button: Accesses weather channels.
- VOX Button: Activates the Voice Operated Exchange function for hands-free operation.
- F (Function) Key: Used to access secondary functions of certain buttons.
Figur 3: Diverse views of the CB radio, including side and rear panels with connection ports.
Nøglefunktioner:
- 40 AM Channels
- Manuel squelch og automatisk squelchkontrol (ASC)
- Multi-function LCD Display with S-meter
- VOX Function (Hands-free operation)
- ANL Filter and HI-CUT for noise reduction
- RF Gain kontrol
- Scan funktion
- Prioriteret kanalhukommelse
- Beep Function and Roger Beep
- Nøglelåsning
- Front microphone plug (6 pins)
- Eksternt højttalerstik
- External VOX microphone jack
- Weather Alert with 7 weather channels (162.400 MHz to 162.550 MHz)
Figure 4: VOX (Voice Operated Exchange) functionality is built into the unit for hands-free communication.
Installation og opsætning
Korrekt installation er afgørende for optimal ydeevne og sikkerhed.
Montering af radioen:
- Choose a secure and accessible location in your vehicle, away from airbags or other safety devices.
- Brug det medfølgende monteringsbeslag som skabelon til at markere borepunkter.
- Drill pilot holes and secure the mounting bracket using appropriate screws (not included).
- Slide the radio into the bracket and secure it with the provided thumb screws.
Strømtilslutning:
- Connect the red wire of the power cable to the positive (+) terminal of your vehicle's 12V or 24V power supply.
- Connect the black wire to the negative (-) terminal or a good chassis ground point.
- Ensure connections are secure and properly insulated.
Antenneforbindelse:
- Connect your CB antenna cable to the antenna jack on the rear of the radio.
- Ensure your antenna is properly tuned for the CB frequency band (26.965 MHz to 27.405 MHz) to prevent damage to the radio and ensure efficient transmission.
Microphone and External Speaker:
- Plug the microphone into the 6-pin microphone jack on the front panel.
- If desired, connect an external loudspeaker to the external loudspeaker jack on the rear for enhanced audio output.
Operation
This section details the basic operation of your President Johnny III USA CB Radio.
Turning On/Off and Volume Adjustment:
- Drej på VOL-SQ knob clockwise to turn the radio ON. Continue rotating to increase the volume.
- Drej på VOL-SQ knob counter-clockwise until it clicks to turn the radio OFF.
Squelch Control (Manual and ASC):
- Manuel squelch: With the radio ON, rotate the VOL-SQ knob fully clockwise to hear background noise. Then, slowly rotate it counter-clockwise until the noise disappears. This sets the squelch threshold.
- Automatisk squelch-kontrol (ASC): The radio features an automatic squelch system. To activate, ensure the manual squelch is set to minimum (fully counter-clockwise). The ASC will automatically adjust the squelch level for optimal reception.
Kanalvalg:
- Drej på Channel Rotary Switch to select your desired channel (1-40). The selected channel will be displayed on the LCD.
- Tryk på 9/19 button for quick access to Channel 9 (emergency) or Channel 19 (common calling channel).
Sende og modtage:
- To transmit, press and hold the Push-To-Talk (PTT) button on the microphone. Speak clearly into the microphone.
- Slip PTT-knappen for at modtage.
Weather Alert and Channels:
- Tryk på WX button to switch to weather channels.
- Tryk på ALERT button to activate the Weather Alert function, which will notify you of severe weather broadcasts.
VOX Function (Hands-Free):
- Tryk på VOX button to enable voice-activated transmission. The radio will transmit when it detects your voice.
- Adjust VOX sensitivity as needed for optimal performance.
Scanningsfunktion:
- Tryk på SCAN button to initiate scanning of all active channels. The radio will stop on an active channel.
- Trykke SCAN again to resume scanning.
Noise Filters (ANL and HI-CUT):
- Tryk på NB/HI-CUT button to toggle the Automatic Noise Limiter (ANL) and High-Cut filters. These filters help reduce impulse noise and high-frequency hiss for clearer reception.
RF-forstærkning:
- Drej på RF-VIND knob to adjust the sensitivity of the receiver. This can be useful in areas with strong signals to prevent overload or in weak signal areas to boost reception.
Vedligeholdelse og pleje
To ensure the longevity and optimal performance of your President Johnny III USA CB Radio, follow these maintenance guidelines:
- Rensning: Brug en blød, tør klud til at rengøre radioens yderside. Brug ikke slibende rengøringsmidler eller opløsningsmidler.
- Forbindelser: Kontrollér regelmæssigt alle kabelforbindelser (strøm, antenne, mikrofon) for at sikre, at de er fastgjorte og fri for korrosion.
- Miljø: Avoid exposing the radio to extreme temperatures, direct sunlight for prolonged periods, or high humidity.
- Antennejustering: Regularly check your antenna's SWR (Standing Wave Ratio) to ensure it remains properly tuned. An improperly tuned antenna can cause damage to the radio.
Fejlfinding
If you encounter issues with your CB radio, refer to the following common problems and solutions:
| Problem | Mulig årsag | Løsning |
|---|---|---|
| No power to the radio. | Løs strømforbindelse, sprunget sikring, problem med bilbatteri. | Check power cable connections. Inspect and replace fuse if necessary. Verify vehicle battery voltage. |
| Ingen lyd fra højttaleren. | Volume too low, squelch set too high, external speaker disconnected. | Increase volume. Adjust squelch (manual or ASC). Check external speaker connection. |
| Cannot transmit or poor transmission. | Microphone not connected, antenna issue, SWR too high. | Ensure microphone is securely plugged in. Check antenna connection. Have antenna SWR checked and tuned by a professional. |
| Dårlig modtagelse eller overdreven støj. | Squelch set too low, RF Gain too high, interference. | Adjust squelch. Reduce RF Gain. Activate NB/HI-CUT filters. Identify and mitigate sources of electrical interference. |
| Tastaturet reagerer ikke. | Nøglelåsen er aktiveret. | Tryk på LÅSE button to deactivate the key lock. |
If the problem persists after attempting these solutions, please contact President Electronics USA customer support.
Specifikationer
| Feature | Detalje |
|---|---|
| Antal kanaler | 40 om morgenen |
| Kanalvælger | Rotary |
| Vejrkanaler | 7 (162.400 MHz to 162.550 MHz) |
| Frekvensområde | 26.965 MHz til 27.405 MHz |
| Antenne impedans | 50 ohm |
| Strømforsyning | 13.8 V / 27.6 V DC |
| Dimensioner (B x D x H) | 4.92" x 1.77" x 5.91" (125 mm x 45 mm x 150 mm) |
| Vægt | ~1.54 lbs (~0.7 kg) |
| Vise | Multi-function LCD with S-meter |
| Særlige funktioner | ASC, VOX, ANL, HI-CUT, RF Gain, Scan, Priority Channel Memory, Roger Beep, Key Locking |
| Mikrofonstik | Foran (6 ben) |
| Eksterne stik | External loudspeaker, External VOX microphone |
Garanti og support
The President Johnny III USA CB Radio typically comes with a 2 to 3-year warranty. Please refer to the official President Electronics website for specific warranty terms and conditions applicable to your region and purchase date.
For technical support, warranty claims, or further information, please visit the official President Electronics USA webwebsted:
