1. Introduzione
Thank you for choosing the QODOSEN DX-286 Portable Shortwave Radio. This ultra-high sensitivity, full-band radio is designed to provide exceptional reception across AM, FM, LW, and SW bands, powered by the advanced TEF6686 chip. Its compact and lightweight design makes it ideal for use in various settings, including kitchens, desks, bedrooms, offices, and outdoors. This manual provides detailed instructions to help you set up, operate, and maintain your DX-286 radio for optimal performance.

Figure 1.1: QODOSEN DX-286 Portable Shortwave Radio
2. Prodotto finitoview
2.1 Caratteristiche principali
- Design portatile: Compact dimensions (5.27"W x 2.99"H x 1.18"D) and lightweight (7.1 ounces) for easy portability.
- Full-Band Reception: Supports FM stereo, LW, MW, and SW bands.
- Alta sensibilità: Equipped with DSP TEF6686 radio chip for enhanced receiving sensitivity and excellent selectivity.
- Archiviazione della memoria: Up to 1000 memory storage stations with Band ATS (Auto Tuning Storage).
- Funzioni di comodità: Includes sleep timer, alarm clock, and Universal time display.
- External Antenna Interface: Allows connection of an external antenna for improved signal reception.
- Visualizzazione chiara: Backlit LCD screen for easy viewing, soprattutto di notte.
- Batteria ricaricabile: Powered by a long-lasting 18650 rechargeable battery.
- Qualità audio: High-quality materials and components ensure good audio performance for both vocals and music.
2.2 Componenti e controlli

Figure 2.1: Front Panel Features and Functions
The DX-286 radio features a user-friendly interface with clearly labeled buttons and a multi-function knob. Key components include:
- Antenna telescopica: Extends for optimal FM, LW, MW, and SW reception.
- Schermo LCD: Shows frequency, time, alarm status, and other operational information.
- tastiera: Numeric buttons for direct frequency input and function selection.
- Manopola multifunzione: Used for tuning, step setting, squelch adjustment, and fast adjustment.
- Controllo del volume: Slider on the side for adjusting audio output.
- Presa per cuffie: Per l'ascolto privato.
- Porta di ricarica USB: For charging the internal 18650 battery.
- External Antenna Interface (ANT.): 3.5mm jack for connecting an external antenna.
- Pulsante di ripristino del sistema: Small pinhole button for resetting the device.
- Cavalletto pieghevole: Located on the back for convenient upright placement.
- Vano batteria: Houses the 18650 rechargeable battery.

Figure 2.2: Internal Components and Design

Figure 2.3: Rechargeable Detachable Battery
Video 2.1: DX-286 Radio Commodity Overview and Operation Mode. This video provides a visual guide to the radio's features and basic operation.
3. Impostazione
3.1 Installazione della batteria
- Individuare il coperchio del vano batteria sul retro della radio.
- Far scorrere il coperchio per aprirlo.
- Insert the provided 18650 rechargeable battery, ensuring correct polarity (+ and - ends match the markings inside the compartment).
- Chiudere saldamente il coperchio del vano batterie.

Figure 3.1: Antenna Switching for Optimal Reception
3.2 Carica iniziale
Before first use, it is recommended to fully charge the battery. Connect the supplied USB charging cable to the radio's USB port and a compatible USB power adapter (not included). The charging indicator on the display will show the charging status.
3.3 Estensione dell'antenna
For optimal reception, especially for FM and SW bands, fully extend the telescopic antenna. For LW and MW bands, the internal ferrite rod antenna is primarily used, but extending the telescopic antenna can still improve reception in some cases.

Figure 3.2: Frequency Ranges and Tuning Steps
4. Istruzioni per l'uso
4.1 Accensione/spegnimento
Premere il tasto ENERGIA pulsante per accendere o spegnere la radio.
4.2 Selezione della banda
Premere il tasto FM, AM, O SW buttons to switch between frequency bands. The LW band is typically accessed within the AM band range or through specific settings.
4.3 Metodi di ottimizzazione
The DX-286 offers several tuning methods:
- Sintonizzazione manuale: Rotate the multi-function knob on the side to manually adjust the frequency.
- Ingresso di frequenza diretto: Use the numeric keypad to enter the desired frequency directly, then press FM or AM per confermare.
- Automatic Scan (ATS): Premere e tenere premuto il tasto AUTO pulsante per eseguire la scansione e la memorizzazione automatica delle stazioni disponibili.
- Ricerca sintonizzazione: Premere il tasto CERCARE button to automatically scan for the next strong station.
4.4 Archiviazione e richiamo della memoria
Per memorizzare una stazione, sintonizzarsi sulla frequenza desiderata, quindi tenere premuto il tasto IMPOSTATO button until the memory location flashes. Use the numeric keypad to select a memory slot, then press IMPOSTATO again to confirm. To recall a stored station, press the PAGINA button to navigate through memory pages, or directly enter the memory slot number.
4.5 Impostazioni di ora e sveglia
Premere il tasto TEMPO pulsante per view the current time. To set the time or alarm, refer to the detailed instructions in the included user's manual for specific button sequences.
4.6 Using External Antenna
Connect a compatible external antenna to the FORMICA. jack on the side of the radio. This can significantly improve reception, especially for distant or weak signals. Avvertimento: Do not use the outdoor external antenna during thunderstorms to protect against lightning strikes!

Figure 4.1: External Antenna Interface
4.7 Impostazioni audio
- Volume: Adjust using the slider on the side.
- Tone (Music/Voice): Premere il tasto M/TONE button to switch between music and voice tone modes for optimized audio output.
- Silenziamento: Adjust the squelch level using the multi-function knob in squelch setting mode to reduce background noise.
- Disattiva audio: Premere il tasto MUTE button for instant audio muting.

Figure 4.2: Music/Voice Tone Function
5. Manutenzione
Proper maintenance ensures the longevity and performance of your DX-286 radio.
- Pulizia: Per pulire l'esterno della radio, utilizzare un panno morbido e asciutto. Non utilizzare detergenti abrasivi o solventi.
- Cura della batteria: If the radio will not be used for an extended period, remove the 18650 battery to prevent leakage. Store the battery in a cool, dry place.
- Magazzinaggio: Store the radio in a dry environment, away from extreme temperatures, dust, and direct sunlight.
- Cura dell'antenna: Maneggiare con cura l'antenna telescopica per evitare piegature o rotture. Ritrarla quando non in uso o durante il trasporto della radio.
6. Risoluzione Dei Problemi
If you encounter issues with your DX-286 radio, try the following troubleshooting steps:
| Problema | Possibile causa | Soluzione |
|---|---|---|
| Nessuna alimentazione/La radio non si accende | La batteria è scarica o non è installata correttamente. | Caricare la batteria o assicurarsi che sia installata con la polarità corretta. |
| Ricezione scarsa/statica | Antenna non estesa, segnale debole, interferenza. | Fully extend the telescopic antenna. Try repositioning the radio. Connect an external antenna if available. |
| Il display è vuoto o bloccato | Errore di sistema. | Locate the small 'RESET' pinhole on the radio and gently press it with a thin object (e.g., paperclip) to reset the system. |
| I pulsanti non rispondono | Il blocco tastiera è attivato. | Check if the keypad lock function is enabled (refer to the user manual for specific lock/unlock instructions). |
7. Specifiche
- Dimensioni del prodotto: 5.28 x 1.18 x 2.99 pollici (5.27"L x 1.18"W x 2.99"H)
- Peso dell'articolo: 7.1 once
- Numero modello: DX-286
- Marca: QODOSEN
- Colore: Nero
- Caratteristica speciale: Portatile
- Tecnologia di connettività: USB (per la ricarica)
- Tecnologia del sintonizzatore: AM/FM (DSP TEF6686 chip)
- Fonte di energia: Battery Powered (1 x 18650 rechargeable battery included)
- Bande radio supportate: 4-Band (FM/AM/LW/SW)
- Gamma di frequenza FM: 64-108MHz (various regional settings available)
- Intervallo di frequenza AM: Frequenza
- Intervallo di frequenza SW: 1711-27000 kHz
- Intervallo di frequenza LW: Frequenza
- Componenti inclusi: 1 x DX-286 radio, 2 x Rechargeable Batteries, 1 x USB Charging Cable, 1 x Dedicated Fleece Bag, 1 x Carrying Case, 1 x User's Manual.
8. Garanzia e supporto
The QODOSEN DX-286 radio comes with a standard manufacturer's warranty. Please refer to the warranty card included in your product packaging for specific terms and conditions, including warranty period and coverage details. For technical support, troubleshooting assistance beyond this manual, or warranty claims, please contact QODOSEN customer service through the contact information provided on the product packaging or the official QODOSEN websito. Conservare la ricevuta d'acquisto come prova d'acquisto ai fini della garanzia.