ATS-Mini receiver user manual,alternative firmware v. 2.30- translation into Russian.

Home screen

*RSSI meter — Received signal strength indicator*(upper left corner), also serves to indicate mono/stereo in FM mode (one/two rows)..
save settings icon**(immediately after the RSSI indicator). Settings are saved to non-volatile memory after 10 seconds of inactivity.
*Icon WiFi(in the upper right corner (next to the battery). Different colors indicate the connection status.

• Condition battery(in the upper right corner). Voltage is not displayed during charging, see point 36. The only indicator of battery charging is the LED on the bottom of the receiver, which lights up during charging.
  *Band name and modulation*(VHF and FM, top center). See the range table for details.
  Information panel(field on the left), also Menu. The parameters are described in the Menu section.
  Frequency(center of screen).
  FM radio station name(RDS PS) or Frequency name**(immediately below the frequency). The frequency name is displayed for some popular frequencies such as FT8, SSTV, CB channels or shortwave schedule. Can also display the current menu item in a larger font if the Menu Scale setting is enabled.
  *Tuning scale(bottom of screen). Can be replaced by additional RDS fields (RT, PTY) when Enhanced RDS is enabled.

Alternative GUI

Differences:

• Stereo indicator located to the right of the range and type of radiation (VHF and FM).
• Tuning scale(on the right under the station name). The numbers on the left and right indicate the range boundaries.
• Signal to noise ratio indicator (in dB). The range is 0...127 and the visual indicator displays this range linearly.
• RSSI and S-meter(number in dBµV, indicator in S-points). Note that the RSSI range is also 0...127 (no negative values), and according to these tables, any values ​​below S4 on HF (rssi < 4) and below S7 on VHF (rssi < 2) are incorrect. Thus, these values ​​are very far from accurate and depend on the antenna resistance.

Both indicators can be replaced with additional RDS fields (RT, PTY) when Enhanced RDS is enabled.

Management

Control is carried out using an encoder knob:

Direct frequency input mode

• Press and rotate the encoder to select the pitch (digit or “1/2-digit”).

• Rotate the encoder to adjust the frequency.

• Short press to synchronize the frequency with the current step.

• To exit the mode, press the encoder or wait a couple of seconds.

Menu

The menu can be called up by pressing the encoder button; it closes automatically after a couple of seconds.

• Mode- Mode — FM (available only in the VHF range); LSB, USB, AM (available on other bands). The receiver does not support NFM mode (on all bands, including CB) due to limitations of the SI4732 chip.
• Band- Range - see list of Bands
• Volume- Volume - 0 (silence) ... 63 (maximum). The headphone volume may be low (compared to the built-in speaker) due to limitations in the original design of the device. To mute/unmute the sound, use a short press.
• Step- Step — Tuning step (not all steps are available on every band and in every modulation).
• Seek- Search - Search for a radio station up or down in frequency on AM/FM, faster tuning on LSB/USB (hardware search function is not supported by SI4732 on SSB). Turn or press the encoder to stop scanning. A short press switches between scan and schedule modes. For manual fine tuning, use push and turn.
• Scan- Scan - Scanning the frequency range with plotting RSSI (S - signal) and SNR (N - signal-to-noise ratio) (unfortunately, these indicators are practically useless in SSB modes due to limitations of the SI4732 patch). Both graphs are normalized to the range from 0.0 to 1.0. In scan mode, press the encoder for 0.5 seconds to rescan; press and rotate the encoder to adjust in larger increments. To interrupt a running scan, press or turn the encoder.
• Memory- Memory - 99 memory locations for storing favorite frequencies. Click the "Add" button on an empty slot to save the current frequency, a short press erases the cell. Switch between saved cells by rotating the encoder. You can also edit memory cells via the serial port or through the Google Chrome web interface (in Wi-Fi AP mode - approx. trans.).
• Squelch- Noise suppressor - disables the speaker if the RSSI level is below the specified threshold. Operation in SSB mode is unlikely. To quickly turn off: briefly press the encoder button in the noise reduction menu mode.
• Bandwidth- Bandwidth — select the channel filter bandwidth.
• AGC/ATTN- AGC/ATTN - automatic gain control (on/off) or attenuation level. The attenuator is not applicable in SSB mode.
• AVC- ARG - Sets the maximum gain for automatic volume control (not applicable to FM mode).
• SoftMute- Muting — Sets the maximum soft mute attenuation (applicable to AM/SSB only).
• Settings- Settings — Enter the “Settings” menu

Settings

• Brightness- Brightness — display brightness level (10…255). The minimum level consumes about 80 mA of battery energy, the standard level consumes about 100 mA, and the maximum level consumes about 120 mA.
• Calibration- Calibration — SSB calibration offset (-2000...2000, per range).
• RDS- RDS Radio Data System Parameters: PS - name of the radio station, CT - time, RT - text, PTY - genre, ALL (EU/US) - everything. Please note that time may be transmitted in either UTC or local time zone format, or may be completely fictitious. The clock syncs only once, so you can select the correct time source (to resynchronize, turn the receiver off and on).
• UTC Offset- Offset to UTC — time offset relative to the UTC+0 time zone. Affects the displayed time, regardless of whether it is received via RDS or NTP.
• FM Region- Region FM is the time constant for FM pre-emphasis correction by region (50 µs for the EU/Japan/Australia and 70 µs for the USA).
• Theme- Subject is the color theme.
• UI Layout- UI Layout is an alternative UI layout. Currently only one alternative interface is available with a large S-meter and an S/N-meter.
• Zoom Menu- Enlarged letters in the menu—display the currently selected menu item in a large size (accessibility option for the visually impaired).
• Scroll Dir.- Scroll direction — Menu scroll direction to rotate the encoder clockwise.
• Sleep- Dream — interval for automatically switching the display to sleep mode in seconds (0 — the display is always on).
• Sleep Mode- Sleep mode — When “Locked” - blocked — blocking encoder rotation during sleep; when "Unlocked" - unlocked - frequency adjustment is allowed in sleep mode; with "CPU Sleep" - CPU sleep mode - maximum energy saving mode. With the display on, default brightness and Wi-Fi, consumption is about 170 mA, without Wi-Fi - 100 mA. In locked/unlocked modes the consumption is about 70 mA, in CPU sleep mode it is about 40 mA.
• Load EiBi- Download EiBi - download the database of EiBi broadcast radio stations (requires an Internet connection via Wi-Fi).
• WiFi- Wi-Fi modes — "Off" - Off. (default), "AP" - Access point - built-in access point, "AP+connect" - Access point and connection, "Connect" - Connection - only connecting to an external Wi-Fi network, "Sync Only" - Time synchronization only. More on this below.
• About- "About" - Information screens (Help, Authors, System).

WiFi

Wi-Fi mode (2.4 GHz only) can currently be used for the following purposes:

• Time synchronization via NTP (Network Time Protocol).
• View receiver status (frequency, RSSI/SNR, volume, battery voltage, etc.).
• View memory cells with saved frequencies.
• Managing receiver settings..

There are several modes:

• Off(Off - default)
• AP Only— access point mode. The receiver creates its own ATS-Mini access point and launches a web server at http://10.1.1.1.
• AP+Connect— access point mode and attempt to connect to one of the three configured access points. If the connection is successful, the receiver will synchronize the time every 5 minutes and launch the web server at http://10.1.1.1 and the dynamic IP address received from the configured access point.
• Connect— attempt to connect to one of three configured access points, launch a web server using a dynamic IP address and synchronize time every 5 minutes.
• Sync Only- the same as Connect, but Wi-Fi will be disabled after successful time synchronization.

Initial setup

• Turn on the mode AP Only“Access point only” (the receiver will briefly display its IP address 10.1.1.1).
• Connect to the ATS-Mini access point from your phone or computer. There is no Internet connection on this access point. If connecting from a phone, you may need to disable mobile data and any VPN/firewall software.
• Open your browser and go to the following address: http://10.1.1.1. The web status page should open. You can also try entering the mDNS address "atsmini.local" in your web browser.
  ap[/columns]
• Click on the link "Config"(Configuration)". Here you can add a login and password (optional) to protect the settings page, configure up to three Wi-Fi access points to which the receiver will try to connect when turned on, and also set the time zone and other parameters.
  config[/columns]
• After that, switch the Wi-Fi mode in the receiver to AP+Connect or Connect(The screen will briefly display the new dynamic IP address obtained from the configured access point).
• Now connect your phone/computer to the same hotspot and open the new URL http://dynamic-ip-address of the receiver to check if the receiver is connected to the internet.
  config 2[/columns]

Now you can switch modes as you wish and connect to the receiver either through the internal ATS-Mini access point (if it is enabled, which is especially useful when there are no access points nearby) or through an external access point and a dynamic IP address. The receiver will always listen to the mDNS address "atsmini.local".

!!!Clue

Receiver settings accessible only via Wi-Fi

• Tuning Display Delay- time in milliseconds to delay screen refresh during setup/search, 0 (disabled) ... 255. Slightly speeds up the setup process since the screen is updated less frequently.

Frequency schedule

The receiver can download the EiBi shortwave station schedule and use it to display broadcast stations, allowing you to tune in quickly. Here's how it works:

• The schedule only needs to be downloaded once via Wi-Fi. It will be saved in the receiver's flash memory, so it won't need to be loaded every time you turn on the device.
• To display scheduled stations correctly, you must set the receiver clock. The easiest and most economical way is to set up an Internet connection via Wi-Fi and switch it to Sync Only(“Synchronization only”). The (time zone) offset from UTC does not matter since the receiver is synchronized to NTP in UTC. A less reliable option is to use RDS CT, but this will require you to find a station that broadcasts in UTC (rather than local time).
• Once configured, the receiver will display the names of stations currently broadcasting on certain frequencies (only scheduled times are taken into account; days of the week are ignored for now).
• You can quickly switch between stations using the search mode (marked with a clock icon). To switch between modes, briefly press the encoder while in search mode.

Reset

To reset the receiver settings (current band, frequency, favorite stations, downloaded schedule, etc.):

1. Turn off the receiver
2. Press and hold the encoder.
3. Turn on the receiver
4. Release the encoder when the reset message appears.

Frequency range table

Serial interface

A USB-serial interface is available to control and monitor the receiver. To connect to the serial port, use PuTTY or Picocom. You can also open the following web terminal in Google Chrome: https://www.serialterminal.com/. List of commands:

Launching the terminal to control ATS-mini(translator's note):

sudo putty -serial /dev/ttyACM0

!!!Clue

When monitoring (logging) mode is enabled, the following information, separated by commas, is sent over the serial interface:

Example log in putty terminal:

In SSB mode, Display Frequency (Hz) = (currentFrequency x 1000) + CurrentBFO

(BFO = Beat Frequency Oscillator or “beat frequency generator”).

Taking screenshots

The screenshot feature is intended for interface and theme designers, as well as documentation authors. It outputs the screen image to the serial console as a BMP image in hexadecimal format. To convert it to an image file, you need to convert the hexadecimal string to binary format.

Short one-line code for macOS and Linux (change the serial port name if necessary /dev/ttyACM0):

echo -n C | socat stdio /dev/ttyACM0,echo=0,raw | xxd -r -p > /tmp/screenshot.bmp

Interface photos

schedule 1
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screenshot [/columns]

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Source:https://esp32-si4732.github.io/ats-mini/manual.html