H-RADIO 4.2

Indicators and Panel Quick Start

• S-meter: Press to change view (histogram or "waterfall" mode for low-frequency signals). Press and hold to turn metering on/off (RSSI/SNR signal quality) to reduce digital noise.
• Volume: Press to turn sound on/off.
  • SQ – indicator of a working squelch.
  • MF – simultaneous function indicator for listening to multiple frequencies (see page 5).
• Indicator panel for switching on circuit elements (click to display control buttons) (see page 3).
• Wi-Fi connection: Tap to turn on/off.
  • Indicator color: green - connection active.
  • Orange - no Internet connection.
  • Red - connection error.
  • Gray - no available networks.
• Battery charge level: Tap to display in percentage or volts.
  • A "Lightning" symbol is displayed while the battery is charging. As the charge level decreases, the color changes to yellow and red.

Status Panel

• Use of BFO generator for fine tuning of frequency.
• Automatic gain control (AGC) or attenuator.
• LF bandwidth.
• Range.
• Modulation.
• Setup step.

Main Screen (FM Band)

• Tuning frequency in MHz (press and hold to switch between VFO A/B).
• Signal quality: RSSI – level, SNR – signal to noise ratio.
• Stereo broadcast reception indicator. Press FM to turn on/off stereo reception.
• Current date and time.
• RDS information (station name, text, and program type).

Home Screen Buttons

Main Screen (SSB Modulation)

• Tuning frequency in kHz (click to directly set frequency without using BFO offset; numbers will change to white).
• Indicator of a variable digit in the frequency when tuning (click on the corresponding digit for installation).
• Indicator of wave propagation on the selected range (information obtained from the Internet). Color indicator shows propagation quality (red - bad, yellow - average, green - good).
• Information about the type of amateur radio communication used in the current range section.

Buttons

• HAM: Selection of amateur radio band (see page 6).
• BAND: Selection of broadcast band (see page 6).
• FREQ: Frequency setting / simultaneous mode listening to multiple frequencies (see page 5).
• STEP: Selection of tuning step (see page 6).
• BANDW: Selection of bandwidth (see page 6).
• MODE: Modulation selection / decoder modes (see page 6).
• VOL / MUTE: Volume control (see page 4).
• AGC: Automatic gain on/off (see page 4).
• ATT: Attenuator control (see page 4).
• BFO: Control of BFO oscillator/frequency generator SI5351 (see page 3).
• UP: Search for broadcast station up in frequency.
• DN: Search for broadcast station downward in frequency.
• SCAN: Range scanner (see page 8).
• LIGHT: Display brightness control (see page 19).
• MEMO: Memory of stations and cities (see page 9).
• RETRO: Retro receiver scale (see page 12).
• CB: Civil band CB channels (see page 11).
• FM: Fast switching of saved stations.
• FM: Band of current location (see page 11).
• RDS: RDS functions on/off.
• SETUP: Device settings (see page 13).
• INFO: Information about the device, settings, and wave propagation (see page 17).
• NEXT / BACK: Switching between pages.

H-RADIO 4.2

Quick Start Panel / BFO Generator

Panel for Quick Inclusion of Circuit Elements

Called up by clicking on the panel indicating the inclusion of circuit elements.

• BT: On/off the Bluetooth module to connect a wireless audio device.
• LNA: On/off HF preamplifier.
• HIZ: Antenna input impedance switching (50 Ohm/Hi-Z).
• LOCK: Locks the touch screen and encoder (press to open the lock panel).

Lock Panel

• SCREEN: Enable touch screen lock to prevent accidental taps.
• FREQ: On/off encoder rotation lock.

The locks are disabled by pressing the encoder button.

BFO Generator

To fine-tune to the transmitter frequency in SSB mode, use the BFO generator. Entering the oscillator trim mode is available for each amateur radio band using the BFO button or a long press of the encoder button. Each range retains its own BFO frequency value. The adjustment frequency value varies from -1999 to +1999 Hz. The adjustment step is displayed on the status panel and can be changed by pressing the STEP button. If the device uses an SI5351 generator, use the BFO button. Press the BFO frequency once, and the SI5351 frequency will be displayed. Resetting the BFO or SI5351 frequency to default values is done by long pressing the frequency.

H-RADIO 4.2

Adjusting the Volume and Signal Gain

Volume Control

To control the volume, press the VOL button or the encoder button once. To mute the sound, press the MUTE button or the volume indicator. To automatically mute the sound when there is no station signal, use the squelch. To adjust the squelch level, press in volume control mode to the volume value or once on the encoder button. The squelch level bar will be highlighted brighter and can be adjusted using the encoder. Squelch is not available for SSB mode.

Auto Gain and Attenuator

Use the built-in attenuator to control signal gain. Entering control mode for the attenuator is performed by pressing the ATT button. Set the required attenuator level using the encoder to eliminate overload at the RF input. The higher the value, the weaker the signal amplification. Press the ATT button again to exit the attenuator adjustment mode. The set level will be displayed in the status bar. Press the AGC button to enable automatic signal gain. The status bar will display the corresponding indicator. Press the AGC button again to set the maximum level of gain. The corresponding indicator in the status line will be extinguished.

H-RADIO 4.2

Entering Frequency

The CHANGE button is used to call additional buttons. Click => to return.

Direct Frequency Entry Buttons

Press the FREQ button on the main screen to enter the frequency or set the listening mode for multiple frequencies. Use the number buttons to enter the frequency. The units of measurement will be selected automatically. Use the dot to enter the FM broadcast frequency. To delete incorrectly entered numbers, use the ← | button. A frequency that cannot be set is displayed in red. Click OK to set the frequency. The range and type of modulation will be selected automatically. To exit without changing the frequency, press CANCEL. Press SCAN to enter multi-frequency simultaneous listening mode. This mode is not available for SSB.

For each range and type of modulation (AM or FM), you can create your own list of 7 frequencies to scan. The range will be selected automatically according to the entered frequency. MODE selects the type of modulation. OFF disables the frequency of the selected slot from scanning. ADD adds the current frequency to a free slot. DEL releases the selected slot. SCAN starts listening. The sound will be muted, and scanning of frequencies from the list will begin. When a signal appears on one of the frequencies, scanning will pause, and the frequency will appear in white. Tap the screen to exit the mode.

H-RADIO 4.2

Bands / Modulation / Bandwidth / Tuning Step

Decoder

Morse Code Decoder

For successful decoding, align the red mark on the "waterfall" with the signal while adjusting the frequency. Select the volume level so that the signal is clearly visible at the "waterfall" (usually volume 45). The yellow indicator will flash in time with the signal. The decode line displays the decoded characters and words per minute.

Digital Mode Decoders

To decode RTTY, PSK and Feld-Hell transmissions, align the red mark on the "waterfall" with the signal and adjust the volume. For RTTY L, use the left signal stream, and for RTTY U, use the right signal stream. To manually scroll the RTTY, PSK and FT4/FT8 decoding screen, press SCROLL and rotate the encoder. The SET button for RTTY sets the baud rate to 45.45/50/75 baud. For Feld-Hell, turn on/off anti-aliasing pictures. For PSK, switches between BPSK31 and BPSK63 modes. In FT4/FT8 decoder, it is used to set the time manually (see page 13). To move the Feld-Hell picture up or down for ease of reading, use the SCROLL button. Decoding FT4/FT8 broadcasts requires accurate setting of the time. Connect the receiver using Wi-Fi to the Internet or set the time manually. When the time is set, it is displayed in the UTC TIME line. For each FT4/FT8 gear, time, power, signal offset in seconds from the start of the session, offset frequency from the set one, and the transmission data packet are displayed.

H-RADIO 4.2

Range Scanner

• FREQ: Horizontal scale control.
• RSSI: Vertical scale control.
• SNR: Graphics contrast control. Rotate the encoder or press and hold in the center of the graph to set the default value.
• PAUSE: Press to stop scanning and listen to the broadcast. Turns on automatically when you move the cursor.
• STEP: Press to select the encoder setting step.

Press SCALE to call up control buttons for scale and contrast of the graph. Click => to return.

The screen displays the frequency at the cursor position. Rotate the encoder to move the cursor or select a location on the display. Indication of types of amateur radio communications (CW, DIG, SSB) is shown. The scale displays the initial and final scanning frequency and marks of found signals. The signal graph is based on RSSI and SNR of the signal, with adjustable scale step and chart scale.

H-RADIO 4.2

Memory of Stations and Cities

The CHANGE button is used to call additional buttons. Click => to return.

Station Memory List

The current frequency, modulation type, and range can be saved into the receiver's memory. To set settings from a saved memory cell, rotate the encoder to search for the desired cell, then press the encoder button, SET button, or the desired cell. The list display filter is set in the SETUP -> MEMORY LIST section (see page 14). To save the current settings, press the ADD button. To edit a saved cell, press the EDIT button. To delete a cell, press DEL. When saving or editing a memory location, you must enter the station name using the on-screen keyboard. Then, rotate the encoder to select a location where the station can be received: THIS – the station will be saved for the current city; ALL – the station is available in any city; NONE - there is no connection to the city. The current city is shown at the top of the list. Press CITY to go to the list of cities.

List of Locations (Cities)

For correct display of time and distribution of stations in the cities you are located in, add your location to the cities memory. Just like city stations, you can add, change, and delete. After editing the city name, you must rotate the encoder to select the time zone. Press SCAN to search and save FM stations in the range (see page 10). Use the FM button to go to the list of saved FM stations for the city.

Automatic Search for FM Stations

During the search process, the current frequency and the number of stations found will be displayed. You can abort the search at any time without saving the list of found stations by pressing the CANCEL button. When the search is complete, save the stations found. Then press the FM button and change the station names created automatically. You can edit the list on your computer (see page 19). Saved station names will be used in FM mode (see page 11) and in the retro scale (see page 12).

FM Channel Mode

Stored FM stations can be switched as a channel list. To enter FM mode channels, press the FM button on the main screen. This mode displays the station name, frequency, RDS information, stereo reception indicator, and time. Switching channels is done by rotating the encoder or by pressing the PROG+ and PROG- buttons. The STEREO button turns on/off reception of a station in stereo format. The RDS button turns on/off receiving RDS information. To exit FM channel mode, press the FM button.

CB Channel Mode

It is possible to listen to CB civil band channels. To enter the CB channels mode, press the CB button on the main screen. In this mode, the channel number, letter grid designation, frequency, modulation type, and time are displayed. Channels are switched by rotating the encoder. Switching grids is done using the GRID+ and GRID- buttons. The EU button turns on/off the European frequency grid. The AM, NFM, LSB, and USB buttons enable the corresponding type of modulation. To exit CB channel mode, press the CB button. In channel modes, the search for stations up and down in frequency also works using the UP and DN buttons. To change the theme, tap on the screen in the center. Four themes are available.

The SET button is used to call additional buttons. Click => to return.

H-RADIO 4.2

Retro Receiver Scale

To display the retro scale, press the RETRO button on the main screen. The scale will display stations of the selected band and cities stored in memory cells. Navigation along the scale is carried out by rotating the encoder or sliding on the touch screen. To automatically advance the scale to the next station, quickly swipe the screen in the opposite direction and release. Rewinding will stop at the first available station. The rewind direction is changed by rotating the encoder. To stop, press the screen or encoder. To change the scale scale, click on the red 1:1 indicator on the right and, while pressing, move the scale indicator to the desired position. At the top, there is a volume indicator (press to mute the sound on/off). The screen displays the current frequency, the name of the band and city, as well as the time and battery charge.

• CITY: List of cities.
• BAND: Band selection. The ranges are divided as in retro receivers by the passage of waves depending on the time of day. Color indication shows propagation conditions.
• STEP: Selection of tuning step.
• VOL: Volume adjustment (rotate the encoder to change).
• BFO: BFO oscillator setting (available for SSB modulation).

Modulation switches automatically depending on the range at the cursor position. Indication of range and types of communication is provided.

H-RADIO 4.2

Settings

To enter setup mode, press the SETUP button on the main screen. Settings are divided into pages. Switching pages is done by rotating the encoder or using the PREV and NEXT buttons. Click WIFI for connection settings (see page 15). Press RESET to load default settings. To save settings, press SAVE or EXIT and confirm saving.

RADIO

• ITU region: Select the region on the map.
• RDS time: Get time from RDS.
• FM band start in 64 MHz: Beginning of the FM band.
• Save step individual for band: Step can be saved for modulation type or for each range (only until restart).
• RBDS program type: American standard RDS TP.

PERSONALIZATION

• Frequency digit backlight: Imitation of seven-segment indicators.
• Highlight the frequency in SSB in color if the BFO is not zero: For tuning in SSB mode. Oscillator BFO bias. When the offset is not equal to zero, the frequency digits are displayed darker.
• Buttons: Click to change the appearance of the buttons.
• Language: Select the interface language.
• Setting clock: Manually setting the date and time. Set the date first, then the time. Choose the edit field on the screen and rotate the encoder for installation. When the seconds field is selected, the countdown stops. Click OK for precise installation, after which the countdown will resume.
• 24-hour time format: Choice of 12/24 hour format.
• Retro S-meter: Indicator display in retro style.
• Audio spectrum: Switching view S-meter / spectrum.

DISPLAY

• Screen saver: Enable screensaver (see page 19).
• Display light off in screen saver: Turn off the backlight after the period of inactivity has expired.
• Wait time to saver in minutes: Select after how many minutes the screensaver will turn on or the screen backlight will turn off after the last action.
• Screen orientation: Select the rotation angle of the display. Quickly rotate the screen at any time: press and hold the encoder and tap on the screen.

SCANNER

• Scanning SSB in AM modulation graph will be displayed for AM modulation when SSB is enabled.
• MEMORY LIST: View not city-linked stations in the list (stations with city label NONE are displayed). View all city-linked stations (stations linked to other cities are marked OTHER in the memory list). View only from current band stations in the list.
• BATTERY: Battery indicator display. Battery value in volts (display charge in volts or percent). Warning about an unacceptable battery level (a message will be displayed if the battery charge exceeds acceptable levels).
• HARDWARE: Encoder reverse (rotation direction selection). Encoder step (select encoder type). Beeper (selection of beeper sound).

ANTENNA

• LNA: On/off RF preamplifier.
• Hi-Z: Antenna input impedance on/off matching (Antenna Impedance Hi-Z/50 Ohm).

SI473x

• Mute: When turned on, the sound will be turned off when the receiver is turned on.
• Inversion GPO1: Invert control signal on pin GPO1.
• Inversion GPO2: Invert manager signal on pin GPO2.

DECODER

• Decoded data send to COM port: Decoded data can be received using the Putty program on a personal computer (connect your receiver using a USB cable and install the device driver).
• Feld-Hell picture smoothing: Image received when decoding a Feld-Hell transmission will be smoothed for easier reading.
• Cyrillic alphabet in CW: For the alphabet decoder, Morse will use the Cyrillic alphabet.

H-RADIO 4.2

Wireless Settings

BT/Wi-Fi

• Bluetooth: On/off for connecting wireless headphones or speakers.
• Wireless on: On/off the Wi-Fi module.
• Access point mode: Enables built-in hotspot. The connection can be used when there are no other access points to connect to the receiver (not currently used).
• Select AP: Displays a list of available access points (also available by pressing the WIFI button).
• Internet access watchdog timer: Used to restart the connection if there is no Internet access.

Available access points: Scanning access points takes a few seconds. Then the list and quantity of found access points will be output. Rotate the encoder to search. If no access points are found or the signal is too weak, check the Wi-Fi antenna connection (do not use the Wi-Fi module without an antenna).

• WAN: On/off Wi-Fi module.
• SCAN: Search for access points.
• SET: Establish a connection to the selected access point or click on the desired access point (when connecting for the first time, you will need to enter a password).
• DEL: Remove access point from saved ones.
• SAVED: List of saved access points.

Access Point Name Color: blue – access point in the list of saved ones; yellow – a connection attempt is in progress; green – connection active.

H-RADIO 4.2

Selecting Your Device Model

For the correct functioning of all components of the receiver, it is necessary to select the correct model. The currently selected model is displayed on the CONFIGURATION page. Here you can save or restore the settings configuration, as well as load the factory settings.

Click Select Model. If your device has not been modified and only contains components installed at the manufacturer's factory, you should rotate the encoder to select your model from the list. If changes have been made to your receiver or you assembled it yourself, then choose a model "Generic". Click "next". And then, by rotating the encoder and pressing the screen, check the boxes opposite those components that are installed in your receiver.

The following components are available for configuration:

• Battery charge level indication.
• Indication of the battery charging process.
• Additional Lock button (present in receivers ATS120 and ATS200 series).
• Bluetooth module.
• Morse code and digital communications decoder.
• HF preamplifier.
• 50 Ohm / Hi-Z antenna impedance switching circuit.
• HF range filters present in various models.
• Special mixer of ATS200 series receivers for aviation band.
• Non-standard connection of the mixer for the converter ranges to pin CLK 0 of the SIS351 generator.

Firmware Update

The firmware update can be installed using a PC or obtained automatically from a server updates. Information about the availability of an update is available on the UPDATE & LICENSE page. To update online, you must connect the receiver to the Internet. Then click "Update" embedded software. The update files will be searched for and downloaded. Read the information and run the update process. After updating the software, download additional files (localization file, etc.). If you need to revoke your activation key for use on another device, first obtain the code from the website. Log in to your account using your Email and activation key. Then revoke the key on this settings page.

Information Section

The section is entered using the INFO button on the main screen. This section contains several pages of information. To turn pages, rotate the encoder. Press the screen or encoder to exit the section. Here you can find information about the firmware version, settings and status of the equipment, Wi-Fi connection, device components, range limits, receiver manufacturer and model, serial device number, software developers and copyrights. Information on the passage of waves on the HF bands, obtained from the website HAMQSL.COM, is also available. The date and time of the last download of information are indicated.

H-RADIO 4.2

Virtual Encoder

In all modes, you can use on-screen buttons that duplicate the actions of the encoder. The virtual encoder is called by sliding upward from the bottom edge of the screen. To close the virtual encoder, use the slide in the opposite direction. After a period of inactivity, the screen encoder will close automatically. Press and hold the arrow buttons to simulate encoder rotation.

Actions to Take When Turning On the Receiver

RESET TO FACTORY SETTINGS

With the device turned off, press and hold the encoder button and turn on the power. When the LOADED DEFAULTS message appears, release the encoder. All receiver settings will be restored to their original values. After the reset, you need to perform the initial setup of the main parameters.

File Sharing Mode from PC

If you need to access files in the device's memory before starting, then with the device turned off, press and hold the screen and turn on the power. When a message appears indicating that you are ready to exchange files using the A-explorer program, release the screen and connect your receiver to the PC using a USB cable. The device driver and A-explorer file sharing application must be installed on the PC. Applications to install and user manual are available on the website HARDUINO.RU in the "Download" section. Tap the screen to exit the mode.

Screen Calibration

In file sharing mode with a PC, press and hold the screen until a message appears indicating that screen calibration has started. Continue holding for reset calibration settings or release the screen and then click on the positions indicated by the green arrow one by one. Calibration is complete.

H-RADIO 4.2

Files in the Receiver's Memory

To download files from the receiver to your PC, upload, or delete, use the A-explorer application. Use notepad for editing.

• city.csv: List of locations (id, name, time zone).
• preset.csv: List of stations (frequency, name, city id, modulation).
• label.csv: List of frequency boundaries of various types of communication.
• decoder.log: Decoder log file (erased when the decoder starts).
• scan.csv: Frequency lists for simultaneous listening mode.
• ap.csv: List of saved Wi-Fi access points.
• setting.ini: Override settings.
• *.lng: Interface localization files.
• value.hex: Dump of saved settings.

Battery Life Optimization

To increase the battery life of your device without recharging, use simple functions:

• Enable a short period of inactivity in the settings until the screen saver appears. During the transition to standby mode, some functions are suspended, but listening to the broadcast does not stop.
• Enable in the settings to turn off the display backlight after a period of inactivity. You can also turn on the backlight by pressing the LIGHT button on the main screen and then pressing the backlight brightness level indicator. You can turn on the backlight by tapping on the screen.
• Reduce the brightness of the screen backlight. Press the LIGHT button on the main screen and rotate the encoder.
• Turn off Wi-Fi after receiving the necessary data from the Internet. Turn off the Bluetooth module when not using a wireless audio device.
• Use wired headphones to reduce energy consumption.