Digital radio receiver in

Set of 5 RF 75 W  Mini-BNC female, bayonet silver-plated connector used in R390A receiver En emballage d’origine. P/N : 332-371108-150 Equivalent Amphenol P/N 031-70260

1. Introduction   This FM stereo digital radio circuit board module has built-in DSP digital noise processing. When there is no signal, it will automatically mute and get rid of the noise of the traditional FM radio.   2.   Parameter   NO. Parameter Value 1 Output power 500mW (drive earphone), 3Wx2 (drive horn) 2 Frequency range 50Hz-18KHz  3 Receiving frequency range 87.0MHz-108.0MHz 4 Equivalent noise Greater than 30dB 5 Power supply voltage 3.0V-5.0V 6 Power supply current 1000mA at maximum volume, 60mA at minimum volume (for reference only) 7 Sound track Stereo       3. Using attention:   1>. The power supply voltage is strictly prohibited to exceed the power supply voltage range of this module. 2>. Do not touch the back part of the module when working, so as not to affect the normal work of this module or cause the short-circuit burn module.   4. Feature   1>. Advanced digital audio signal processing technology (DSP) and FM phase-locked loop modulation (PLL) make the sound quality more realistic, more stable performance, and long working frequency without deviation. 2>. LCD display is more intuitive and accurate, with extremely low power consumption and minimal noise interference. 3>. 30 digital volume adjustment, with buttons, easy to operate. 4>. Automatically storage data before power off. 5>. Automatic switch of speaker/headphone output. 6>. Quartz crystal steady frequency, temperature change reception frequency, no longer drift. 7>. It uses professional audio DSP to analyze and process the audio signal, and automatically mute when there is no signal or weak signal. 8>. It uses incremental digital rotary encoder to adjust the volume and frequency, using the feel is good, positioning accuracy, stable and durable, 360 ° rotating without blind Angle. 9> Support serial communication control, available computer or MCU and other devices with serial ports to control all functions of the module.   5. Instruction   1>. Power supply Module corresponding port (marked on PCB board). “-” and “+” are the anode and cathode of the power (battery). The power supply is recommended for battery or other stabilized power supply.You cannot use a power supply without filter (such as mobile phone charger, mobile power supply, and other switching power supply), otherwise the interference caused by power supply will affect the normal work of this module. The normal working voltage of this module is 3.0-5.0V, not exceeding this range. At the maximum volume of the module, the maximum power supply current is around 1A, which requires the battery to output enough current. 2>. Antenna The FM_ANT port is used to connect the FM antenna. To better receive the FM signal, it is recommended to extend the antenna with a length of 75cm. 3>. Headset/speaker output This module is with 3WX2 channel audio amplifier. If the horn is needed, access the speaker port. It is recommended to use 4 Ω / 3 w speakers.If the headset is inserted, the audio will automatically switch to the headphone channel, and the speaker channel will be closed automatically. 4>. Volume Turn the VOL encoder to adjust the volume, while the LCD screen displays the volume series. 5>. Frequency regulation Turn the FRE encoder to adjust the reception frequency, while the LCD screen displays the current frequency, and press the encoder handle to the mute/non-mute switch. 6>. Mute Press the VOL knob to switch the mute/non-mute button down. 7>. AMCAP switch Long press the FRE knob to switch on or off the AMCAP, the LCD display subtitle ON means to turn on the AMCAP, and OFF means to turn off the AMCAP. 8>. AMCAP threshold adjustment(when the AMCAP switch on) Short press the FRE knob to AMCAP threshold adjustment interface, you can adjust the movement threshold of the AMCAP according to the specific usage situation. The adjustment range is 0-20. The higher the value is, the higher the threshold is, the easier the weak signal is to be silent. Vice versa. 9>. Serial port (without serial port control) The module reserved TTL level serial port control interface. TTL serial port and this module communication need to connect the module's UART_RX, UART_TX and GND (the corresponding position of PCB is marked). You can use the external MCU or the computer serial port to send the command control module related functions. Note: because the computer serial port is not TTL level, connect the computer communication, it is necessary to connect the RS323 level to TTL power leveling device or the USB TTL level serial port module to communicate with this module. This operation requires professionals. 10>. User Settings This module can set the backlight state according to the user's specific usage. When the power is off, press the FRE button to turn on, and the B0 indicates that the backlight is always bright. B0 indicates that the backlight is closed for 20 seconds, and the setting is effective after the restart. Change the Settings state to repeat this step to switch. The backlight has no operation for 20 seconds. 11>. Stereo /mono switch terminal. Stereo/mono terminals are used to set the FM receiving mode of the module. This terminal is suspended for Stereo reception mode, and it is a single channel receiving mode.   6. FM with squelch receiver module AT instruction: Baud rate: 38400 TTL level   No. Name Example Instruction Range Return position 1 Set current frequency point AT+FRE=875 current frequency point is 87.5MHz  870-1080 MHz Current frequency point/ERR 2 Frequency point-0.1MHZ AT+FRED     Current frequency point   Le 10-juil.-19 à 05:53:17 Paris, le vendeur a ajouté les informations suivantes:

1. Introduction   This FM stereo digital radio circuit board module has built-in DSP digital noise processing. When there is no signal, it will automatically mute and get rid of the noise of the traditional FM radio.   2.   Parameter   NO. Parameter Value 1 Output power 500mW (drive earphone), 3Wx2 (drive horn) 2 Frequency range 50Hz-18KHz  3 Receiving frequency range 87.0MHz-108.0MHz 4 Equivalent noise Greater than 30dB 5 Power supply voltage 3.0V-5.0V 6 Power supply current 1000mA at maximum volume, 60mA at minimum volume (for reference only) 7 Sound track Stereo       3. Using attention:   1>. The power supply voltage is strictly prohibited to exceed the power supply voltage range of this module. 2>. Do not touch the back part of the module when working, so as not to affect the normal work of this module or cause the short-circuit burn module.   4. Feature   1>. Advanced digital audio signal processing technology (DSP) and FM phase-locked loop modulation (PLL) make the sound quality more realistic, more stable performance, and long working frequency without deviation. 2>. LCD display is more intuitive and accurate, with extremely low power consumption and minimal noise interference. 3>. 30 digital volume adjustment, with buttons, easy to operate. 4>. Automatically storage data before power off. 5>. Automatic switch of speaker/headphone output. 6>. Quartz crystal steady frequency, temperature change reception frequency, no longer drift. 7>. It uses professional audio DSP to analyze and process the audio signal, and automatically mute when there is no signal or weak signal. 8>. It uses incremental digital rotary encoder to adjust the volume and frequency, using the feel is good, positioning accuracy, stable and durable, 360 ° rotating without blind Angle. 9> Support serial communication control, available computer or MCU and other devices with serial ports to control all functions of the module.   5. Instruction   1>. Power supply Module corresponding port (marked on PCB board). “-” and “+” are the anode and cathode of the power (battery). The power supply is recommended for battery or other stabilized power supply.You cannot use a power supply without filter (such as mobile phone charger, mobile power supply, and other switching power supply), otherwise the interference caused by power supply will affect the normal work of this module. The normal working voltage of this module is 3.0-5.0V, not exceeding this range. At the maximum volume of the module, the maximum power supply current is around 1A, which requires the battery to output enough current. 2>. Antenna The FM_ANT port is used to connect the FM antenna. To better receive the FM signal, it is recommended to extend the antenna with a length of 75cm. 3>. Headset/speaker output This module is with 3WX2 channel audio amplifier. If the horn is needed, access the speaker port. It is recommended to use 4 Ω / 3 w speakers.If the headset is inserted, the audio will automatically switch to the headphone channel, and the speaker channel will be closed automatically. 4>. Volume Turn the VOL encoder to adjust the volume, while the LCD screen displays the volume series. 5>. Frequency regulation Turn the FRE encoder to adjust the reception frequency, while the LCD screen displays the current frequency, and press the encoder handle to the mute/non-mute switch. 6>. Mute Press the VOL knob to switch the mute/non-mute button down. 7>. AMCAP switch Long press the FRE knob to switch on or off the AMCAP, the LCD display subtitle ON means to turn on the AMCAP, and OFF means to turn off the AMCAP. 8>. AMCAP threshold adjustment(when the AMCAP switch on) Short press the FRE knob to AMCAP threshold adjustment interface, you can adjust the movement threshold of the AMCAP according to the specific usage situation. The adjustment range is 0-20. The higher the value is, the higher the threshold is, the easier the weak signal is to be silent. Vice versa. 9>. Serial port (without serial port control) The module reserved TTL level serial port control interface. TTL serial port and this module communication need to connect the module's UART_RX, UART_TX and GND (the corresponding position of PCB is marked). You can use the external MCU or the computer serial port to send the command control module related functions. Note: because the computer serial port is not TTL level, connect the computer communication, it is necessary to connect the RS323 level to TTL power leveling device or the USB TTL level serial port module to communicate with this module. This operation requires professionals. 10>. User Settings This module can set the backlight state according to the user's specific usage. When the power is off, press the FRE button to turn on, and the B0 indicates that the backlight is always bright. B0 indicates that the backlight is closed for 20 seconds, and the setting is effective after the restart. Change the Settings state to repeat this step to switch. The backlight has no operation for 20 seconds. 11>. Stereo /mono switch terminal. Stereo/mono terminals are used to set the FM receiving mode of the module. This terminal is suspended for Stereo reception mode, and it is a single channel receiving mode.   6. FM with squelch receiver module AT instruction: Baud rate: 38400 TTL level   No. Name Example Instruction Range Return position 1 Set current frequency point AT+FRE=875 current frequency point is 87.5MHz  870-1080 MHz Current frequency point/ERR 2 Frequency point-0.1MHZ AT+FRED     Current frequency point   Le 09-juil.-19 à 17:37:11 Paris, le vendeur a ajouté les informations suivantes:

1. Introduction   This FM stereo digital radio circuit board module has built-in DSP digital noise processing. When there is no signal, it will automatically mute and get rid of the noise of the traditional FM radio.   2.   Parameter   NO. Parameter Value 1 Output power 500mW (drive earphone), 3Wx2 (drive horn) 2 Frequency range 50Hz-18KHz  3 Receiving frequency range 87.0MHz-108.0MHz 4 Equivalent noise Greater than 30dB 5 Power supply voltage 3.0V-5.0V 6 Power supply current 1000mA at maximum volume, 60mA at minimum volume (for reference only) 7 Sound track Stereo       3. Using attention:   1>. The power supply voltage is strictly prohibited to exceed the power supply voltage range of this module. 2>. Do not touch the back part of the module when working, so as not to affect the normal work of this module or cause the short-circuit burn module.   4. Feature   1>. Advanced digital audio signal processing technology (DSP) and FM phase-locked loop modulation (PLL) make the sound quality more realistic, more stable performance, and long working frequency without deviation. 2>. LCD display is more intuitive and accurate, with extremely low power consumption and minimal noise interference. 3>. 30 digital volume adjustment, with buttons, easy to operate. 4>. Automatically storage data before power off. 5>. Automatic switch of speaker/headphone output. 6>. Quartz crystal steady frequency, temperature change reception frequency, no longer drift. 7>. It uses professional audio DSP to analyze and process the audio signal, and automatically mute when there is no signal or weak signal. 8>. It uses incremental digital rotary encoder to adjust the volume and frequency, using the feel is good, positioning accuracy, stable and durable, 360 ° rotating without blind Angle. 9> Support serial communication control, available computer or MCU and other devices with serial ports to control all functions of the module.   5. Instruction   1>. Power supply Module corresponding port (marked on PCB board). “-” and “+” are the anode and cathode of the power (battery). The power supply is recommended for battery or other stabilized power supply.You cannot use a power supply without filter (such as mobile phone charger, mobile power supply, and other switching power supply), otherwise the interference caused by power supply will affect the normal work of this module. The normal working voltage of this module is 3.0-5.0V, not exceeding this range. At the maximum volume of the module, the maximum power supply current is around 1A, which requires the battery to output enough current. 2>. Antenna The FM_ANT port is used to connect the FM antenna. To better receive the FM signal, it is recommended to extend the antenna with a length of 75cm. 3>. Headset/speaker output This module is with 3WX2 channel audio amplifier. If the horn is needed, access the speaker port. It is recommended to use 4 Ω / 3 w speakers.If the headset is inserted, the audio will automatically switch to the headphone channel, and the speaker channel will be closed automatically. 4>. Volume Turn the VOL encoder to adjust the volume, while the LCD screen displays the volume series. 5>. Frequency regulation Turn the FRE encoder to adjust the reception frequency, while the LCD screen displays the current frequency, and press the encoder handle to the mute/non-mute switch. 6>. Mute Press the VOL knob to switch the mute/non-mute button down. 7>. AMCAP switch Long press the FRE knob to switch on or off the AMCAP, the LCD display subtitle ON means to turn on the AMCAP, and OFF means to turn off the AMCAP. 8>. AMCAP threshold adjustment(when the AMCAP switch on) Short press the FRE knob to AMCAP threshold adjustment interface, you can adjust the movement threshold of the AMCAP according to the specific usage situation. The adjustment range is 0-20. The higher the value is, the higher the threshold is, the easier the weak signal is to be silent. Vice versa. 9>. Serial port (without serial port control) The module reserved TTL level serial port control interface. TTL serial port and this module communication need to connect the module's UART_RX, UART_TX and GND (the corresponding position of PCB is marked). You can use the external MCU or the computer serial port to send the command control module related functions. Note: because the computer serial port is not TTL level, connect the computer communication, it is necessary to connect the RS323 level to TTL power leveling device or the USB TTL level serial port module to communicate with this module. This operation requires professionals. 10>. User Settings This module can set the backlight state according to the user's specific usage. When the power is off, press the FRE button to turn on, and the B0 indicates that the backlight is always bright. B0 indicates that the backlight is closed for 20 seconds, and the setting is effective after the restart. Change the Settings state to repeat this step to switch. The backlight has no operation for 20 seconds. 11>. Stereo /mono switch terminal. Stereo/mono terminals are used to set the FM receiving mode of the module. This terminal is suspended for Stereo reception mode, and it is a single channel receiving mode.   6. FM with squelch receiver module AT instruction: Baud rate: 38400 TTL level   No. Name Example Instruction Range Return position 1 Set current frequency point AT+FRE=875 current frequency point is 87.5MHz  870-1080 MHz Current frequency point/ERR 2 Frequency point-0.1MHZ AT+FRED     Current frequency point   Le 08-juil.-19 à 15:14:31 Paris, le vendeur a ajouté les informations suivantes:

1. Introduction   This FM stereo digital radio circuit board module has built-in DSP digital noise processing. When there is no signal, it will automatically mute and get rid of the noise of the traditional FM radio.   2.   Parameter   NO. Parameter Value 1 Output power 500mW (drive earphone), 3Wx2 (drive horn) 2 Frequency range 50Hz-18KHz  3 Receiving frequency range 87.0MHz-108.0MHz 4 Equivalent noise Greater than 30dB 5 Power supply voltage 3.0V-5.0V 6 Power supply current 1000mA at maximum volume, 60mA at minimum volume (for reference only) 7 Sound track Stereo       3. Using attention:   1>. The power supply voltage is strictly prohibited to exceed the power supply voltage range of this module. 2>. Do not touch the back part of the module when working, so as not to affect the normal work of this module or cause the short-circuit burn module.   4. Feature   1>. Advanced digital audio signal processing technology (DSP) and FM phase-locked loop modulation (PLL) make the sound quality more realistic, more stable performance, and long working frequency without deviation. 2>. LCD display is more intuitive and accurate, with extremely low power consumption and minimal noise interference. 3>. 30 digital volume adjustment, with buttons, easy to operate. 4>. Automatically storage data before power off. 5>. Automatic switch of speaker/headphone output. 6>. Quartz crystal steady frequency, temperature change reception frequency, no longer drift. 7>. It uses professional audio DSP to analyze and process the audio signal, and automatically mute when there is no signal or weak signal. 8>. It uses incremental digital rotary encoder to adjust the volume and frequency, using the feel is good, positioning accuracy, stable and durable, 360 ° rotating without blind Angle. 9> Support serial communication control, available computer or MCU and other devices with serial ports to control all functions of the module.   5. Instruction   1>. Power supply Module corresponding port (marked on PCB board). “-” and “+” are the anode and cathode of the power (battery). The power supply is recommended for battery or other stabilized power supply.You cannot use a power supply without filter (such as mobile phone charger, mobile power supply, and other switching power supply), otherwise the interference caused by power supply will affect the normal work of this module. The normal working voltage of this module is 3.0-5.0V, not exceeding this range. At the maximum volume of the module, the maximum power supply current is around 1A, which requires the battery to output enough current. 2>. Antenna The FM_ANT port is used to connect the FM antenna. To better receive the FM signal, it is recommended to extend the antenna with a length of 75cm. 3>. Headset/speaker output This module is with 3WX2 channel audio amplifier. If the horn is needed, access the speaker port. It is recommended to use 4 Ω / 3 w speakers.If the headset is inserted, the audio will automatically switch to the headphone channel, and the speaker channel will be closed automatically. 4>. Volume Turn the VOL encoder to adjust the volume, while the LCD screen displays the volume series. 5>. Frequency regulation Turn the FRE encoder to adjust the reception frequency, while the LCD screen displays the current frequency, and press the encoder handle to the mute/non-mute switch. 6>. Mute Press the VOL knob to switch the mute/non-mute button down. 7>. AMCAP switch Long press the FRE knob to switch on or off the AMCAP, the LCD display subtitle ON means to turn on the AMCAP, and OFF means to turn off the AMCAP. 8>. AMCAP threshold adjustment(when the AMCAP switch on) Short press the FRE knob to AMCAP threshold adjustment interface, you can adjust the movement threshold of the AMCAP according to the specific usage situation. The adjustment range is 0-20. The higher the value is, the higher the threshold is, the easier the weak signal is to be silent. Vice versa. 9>. Serial port (without serial port control) The module reserved TTL level serial port control interface. TTL serial port and this module communication need to connect the module's UART_RX, UART_TX and GND (the corresponding position of PCB is marked). You can use the external MCU or the computer serial port to send the command control module related functions. Note: because the computer serial port is not TTL level, connect the computer communication, it is necessary to connect the RS323 level to TTL power leveling device or the USB TTL level serial port module to communicate with this module. This operation requires professionals. 10>. User Settings This module can set the backlight state according to the user's specific usage. When the power is off, press the FRE button to turn on, and the B0 indicates that the backlight is always bright. B0 indicates that the backlight is closed for 20 seconds, and the setting is effective after the restart. Change the Settings state to repeat this step to switch. The backlight has no operation for 20 seconds. 11>. Stereo /mono switch terminal. Stereo/mono terminals are used to set the FM receiving mode of the module. This terminal is suspended for Stereo reception mode, and it is a single channel receiving mode.   6. FM with squelch receiver module AT instruction: Baud rate: 38400 TTL level   No. Name Example Instruction Range Return position 1 Set current frequency point AT+FRE=875 current frequency point is 87.5MHz  870-1080 MHz Current frequency point/ERR 2 Frequency point-0.1MHZ AT+FRED     Current frequency point   Le 10-août-19 à 10:14:47 Paris, le vendeur a ajouté les informations suivantes:

1. Introduction   This FM stereo digital radio circuit board module has built-in DSP digital noise processing. When there is no signal, it will automatically mute and get rid of the noise of the traditional FM radio.   2.   Parameter   NO. Parameter Value 1 Output power 500mW (drive earphone), 3Wx2 (drive horn) 2 Frequency range 50Hz-18KHz  3 Receiving frequency range 87.0MHz-108.0MHz 4 Equivalent noise Greater than 30dB 5 Power supply voltage 3.0V-5.0V 6 Power supply current 1000mA at maximum volume, 60mA at minimum volume (for reference only) 7 Sound track Stereo       3. Using attention:   1>. The power supply voltage is strictly prohibited to exceed the power supply voltage range of this module. 2>. Do not touch the back part of the module when working, so as not to affect the normal work of this module or cause the short-circuit burn module.   4. Feature   1>. Advanced digital audio signal processing technology (DSP) and FM phase-locked loop modulation (PLL) make the sound quality more realistic, more stable performance, and long working frequency without deviation. 2>. LCD display is more intuitive and accurate, with extremely low power consumption and minimal noise interference. 3>. 30 digital volume adjustment, with buttons, easy to operate. 4>. Automatically storage data before power off. 5>. Automatic switch of speaker/headphone output. 6>. Quartz crystal steady frequency, temperature change reception frequency, no longer drift. 7>. It uses professional audio DSP to analyze and process the audio signal, and automatically mute when there is no signal or weak signal. 8>. It uses incremental digital rotary encoder to adjust the volume and frequency, using the feel is good, positioning accuracy, stable and durable, 360 ° rotating without blind Angle. 9> Support serial communication control, available computer or MCU and other devices with serial ports to control all functions of the module.   5. Instruction   1>. Power supply Module corresponding port (marked on PCB board). “-” and “+” are the anode and cathode of the power (battery). The power supply is recommended for battery or other stabilized power supply.You cannot use a power supply without filter (such as mobile phone charger, mobile power supply, and other switching power supply), otherwise the interference caused by power supply will affect the normal work of this module. The normal working voltage of this module is 3.0-5.0V, not exceeding this range. At the maximum volume of the module, the maximum power supply current is around 1A, which requires the battery to output enough current. 2>. Antenna The FM_ANT port is used to connect the FM antenna. To better receive the FM signal, it is recommended to extend the antenna with a length of 75cm. 3>. Headset/speaker output This module is with 3WX2 channel audio amplifier. If the horn is needed, access the speaker port. It is recommended to use 4 Ω / 3 w speakers.If the headset is inserted, the audio will automatically switch to the headphone channel, and the speaker channel will be closed automatically. 4>. Volume Turn the VOL encoder to adjust the volume, while the LCD screen displays the volume series. 5>. Frequency regulation Turn the FRE encoder to adjust the reception frequency, while the LCD screen displays the current frequency, and press the encoder handle to the mute/non-mute switch. 6>. Mute Press the VOL knob to switch the mute/non-mute button down. 7>. AMCAP switch Long press the FRE knob to switch on or off the AMCAP, the LCD display subtitle ON means to turn on the AMCAP, and OFF means to turn off the AMCAP. 8>. AMCAP threshold adjustment(when the AMCAP switch on) Short press the FRE knob to AMCAP threshold adjustment interface, you can adjust the movement threshold of the AMCAP according to the specific usage situation. The adjustment range is 0-20. The higher the value is, the higher the threshold is, the easier the weak signal is to be silent. Vice versa. 9>. Serial port (without serial port control) The module reserved TTL level serial port control interface. TTL serial port and this module communication need to connect the module's UART_RX, UART_TX and GND (the corresponding position of PCB is marked). You can use the external MCU or the computer serial port to send the command control module related functions. Note: because the computer serial port is not TTL level, connect the computer communication, it is necessary to connect the RS323 level to TTL power leveling device or the USB TTL level serial port module to communicate with this module. This operation requires professionals. 10>. User Settings This module can set the backlight state according to the user's specific usage. When the power is off, press the FRE button to turn on, and the B0 indicates that the backlight is always bright. B0 indicates that the backlight is closed for 20 seconds, and the setting is effective after the restart. Change the Settings state to repeat this step to switch. The backlight has no operation for 20 seconds. 11>. Stereo /mono switch terminal. Stereo/mono terminals are used to set the FM receiving mode of the module. This terminal is suspended for Stereo reception mode, and it is a single channel receiving mode.   6. FM with squelch receiver module AT instruction: Baud rate: 38400 TTL level   No. Name Example Instruction Range Return position 1 Set current frequency point AT+FRE=875 current frequency point is 87.5MHz  870-1080 MHz Current frequency point/ERR 2 Frequency point-0.1MHZ AT+FRED     Current frequency point Le 30-août-19 à 13:44:50 Paris, le vendeur a ajouté les informations suivantes:

1. Introduction   This FM stereo digital radio circuit board module has built-in DSP digital noise processing. When there is no signal, it will automatically mute and get rid of the noise of the traditional FM radio.   2.   Parameter   NO. Parameter Value 1 Output power 500mW (drive earphone), 3Wx2 (drive horn) 2 Frequency range 50Hz-18KHz  3 Receiving frequency range 87.0MHz-108.0MHz 4 Equivalent noise Greater than 30dB 5 Power supply voltage 3.0V-5.0V 6 Power supply current 1000mA at maximum volume, 60mA at minimum volume (for reference only) 7 Sound track Stereo       3. Using attention:   1>. The power supply voltage is strictly prohibited to exceed the power supply voltage range of this module. 2>. Do not touch the back part of the module when working, so as not to affect the normal work of this module or cause the short-circuit burn module.   4. Feature   1>. Advanced digital audio signal processing technology (DSP) and FM phase-locked loop modulation (PLL) make the sound quality more realistic, more stable performance, and long working frequency without deviation. 2>. LCD display is more intuitive and accurate, with extremely low power consumption and minimal noise interference. 3>. 30 digital volume adjustment, with buttons, easy to operate. 4>. Automatically storage data before power off. 5>. Automatic switch of speaker/headphone output. 6>. Quartz crystal steady frequency, temperature change reception frequency, no longer drift. 7>. It uses professional audio DSP to analyze and process the audio signal, and automatically mute when there is no signal or weak signal. 8>. It uses incremental digital rotary encoder to adjust the volume and frequency, using the feel is good, positioning accuracy, stable and durable, 360 ° rotating without blind Angle. 9> Support serial communication control, available computer or MCU and other devices with serial ports to control all functions of the module.   5. Instruction   1>. Power supply Module corresponding port (marked on PCB board). “-” and “+” are the anode and cathode of the power (battery). The power supply is recommended for battery or other stabilized power supply.You cannot use a power supply without filter (such as mobile phone charger, mobile power supply, and other switching power supply), otherwise the interference caused by power supply will affect the normal work of this module. The normal working voltage of this module is 3.0-5.0V, not exceeding this range. At the maximum volume of the module, the maximum power supply current is around 1A, which requires the battery to output enough current. 2>. Antenna The FM_ANT port is used to connect the FM antenna. To better receive the FM signal, it is recommended to extend the antenna with a length of 75cm. 3>. Headset/speaker output This module is with 3WX2 channel audio amplifier. If the horn is needed, access the speaker port. It is recommended to use 4 Ω / 3 w speakers.If the headset is inserted, the audio will automatically switch to the headphone channel, and the speaker channel will be closed automatically. 4>. Volume Turn the VOL encoder to adjust the volume, while the LCD screen displays the volume series. 5>. Frequency regulation Turn the FRE encoder to adjust the reception frequency, while the LCD screen displays the current frequency, and press the encoder handle to the mute/non-mute switch. 6>. Mute Press the VOL knob to switch the mute/non-mute button down. 7>. AMCAP switch Long press the FRE knob to switch on or off the AMCAP, the LCD display subtitle ON means to turn on the AMCAP, and OFF means to turn off the AMCAP. 8>. AMCAP threshold adjustment(when the AMCAP switch on) Short press the FRE knob to AMCAP threshold adjustment interface, you can adjust the movement threshold of the AMCAP according to the specific usage situation. The adjustment range is 0-20. The higher the value is, the higher the threshold is, the easier the weak signal is to be silent. Vice versa. 9>. Serial port (without serial port control) The module reserved TTL level serial port control interface. TTL serial port and this module communication need to connect the module's UART_RX, UART_TX and GND (the corresponding position of PCB is marked). You can use the external MCU or the computer serial port to send the command control module related functions. Note: because the computer serial port is not TTL level, connect the computer communication, it is necessary to connect the RS323 level to TTL power leveling device or the USB TTL level serial port module to communicate with this module. This operation requires professionals. 10>. User Settings This module can set the backlight state according to the user's specific usage. When the power is off, press the FRE button to turn on, and the B0 indicates that the backlight is always bright. B0 indicates that the backlight is closed for 20 seconds, and the setting is effective after the restart. Change the Settings state to repeat this step to switch. The backlight has no operation for 20 seconds. 11>. Stereo /mono switch terminal. Stereo/mono terminals are used to set the FM receiving mode of the module. This terminal is suspended for Stereo reception mode, and it is a single channel receiving mode.   6. FM with squelch receiver module AT instruction: Baud rate: 38400 TTL level   No. Name Example Instruction Range Return position 1 Set current frequency point AT+FRE=875 current frequency point is 87.5MHz  870-1080 MHz Current frequency point/ERR 2 Frequency point-0.1MHZ AT+FRED     Current frequency point   Le 30-août-19 à 11:05:14 Paris, le vendeur a ajouté les informations suivantes:

Aperçus: L'antenne DAB rétractable peut améliorer le signal de réception de la radio et vous apporter une meilleure expérience utilisateur. Caractéristiques: Cette antenne radio DAB peut remplacer votre antenne radio endommagée. Cette antenne portable a sept sections rétractables qui peuvent être raccourcies ou étendues. Léger, c'est pratique à emporter partout. Avec 7 sections rétractables, il contribue à améliorer le signal de réception de votre radio. Il suffit de le brancher à la radio et de le visser. C'est très facile à utiliser. Pays et régions compatibles DAB: Australie, Belgique, République tchèque, Danemark, France, Allemagne, Gibraltar, Hong Kong, Irlande, Italie, Koweït,, Maroc, Pays-Bas, Norvège, Pologne, Slovénie, Corée du Sud, Espagne, Suède, Suisse., Royaume-Uni. Caractéristiques: Numéro de modèle: 6981-F Numéro de section: 7 Couleur: argent Longueur maximale d'étirement: env. 47.5cm / 18.7 in Longueur la plus courte: env. 12.5cm / 4.92 in Poids de l'article: env. 22,7 g / 0,8 oz Taille du colis: env. 17 * 24 * 0,7 cm / 6,69 * 9,45 * 0,28 po Poids du colis: env. 25g / 0.88oz Liste de colis: 1 * antenne télescopique

Aperçus: L'antenne DAB rétractable peut améliorer le signal de réception de la radio et vous apporter une meilleure expérience utilisateur. Caractéristiques: Cette antenne radio DAB peut remplacer votre antenne radio endommagée. Cette antenne portable a sept sections rétractables qui peuvent être raccourcies ou étendues. Léger, c'est pratique à emporter partout. Avec 7 sections rétractables, il contribue à améliorer le signal de réception de votre radio. Il suffit de le brancher à la radio et de le visser. C'est très facile à utiliser. Pays et régions compatibles DAB: Australie, Belgique, République tchèque, Danemark, France, Allemagne, Gibraltar, Hong Kong, Irlande, Italie, Koweït, Malte, Maroc, Pays-Bas, Norvège, Pologne, Slovénie, Corée du Sud, Espagne, Suède, Suisse., Royaume-Uni. Caractéristiques: Numéro de modèle: 6981-F Numéro de section: 7 Couleur: argent Longueur maximale d'étirement: env. 47.5cm / 18.7 in Longueur la plus courte: env. 12.5cm / 4.92 in Poids de l'article: env. 22,7 g / 0,8 oz Taille du colis: env. 17 * 24 * 0,7 cm / 6,69 * 9,45 * 0,28 po Poids du colis: env. 25g / 0.88oz Liste de colis: 1 * antenne télescopique

Aperçus: L'antenne DAB rétractable peut améliorer le signal de réception de la radio et vous apporter une meilleure expérience utilisateur. Caractéristiques: Cette antenne radio DAB peut remplacer votre antenne radio endommagée. Cette antenne portable a sept sections rétractables qui peuvent être raccourcies ou étendues. Léger, c'est pratique à emporter partout. Avec 7 sections rétractables, il contribue à améliorer le signal de réception de votre radio. Il suffit de le brancher à la radio et de le visser. C'est très facile à utiliser. Pays et régions compatibles DAB: Australie, Belgique, République tchèque, Danemark, France, Allemagne, Gibraltar, Hong Kong, Irlande, Italie, Koweït, Malte, Maroc, Pays-Bas, Norvège, Pologne, Slovénie, Corée du Sud, Espagne, Suède, Suisse., Royaume-Uni. Caractéristiques: Numéro de modèle: 6981-F Numéro de section: 7 Couleur: argent Longueur maximale d'étirement: env. 47.5cm / 18.7 in Longueur la plus courte: env. 12.5cm / 4.92 in Poids de l'article: env. 22,7 g / 0,8 oz Taille du colis: env. 17 * 24 * 0,7 cm / 6,69 * 9,45 * 0,28 po Poids du colis: env. 25g / 0.88oz Liste de colis: 1 * antenne télescopique Le 23-mars-20 à 16:30:51 Paris, le vendeur a ajouté les informations suivantes:

This is in good condition, and appears to be compete (except for the cover). I have no way to test it, I don't have the correct type of power cord. I am sorry about the shipping cost, but it's built like a tank and very heavy. If you would like to arrange your own shipping, please contact me.

RADIO MULTI FUNCTIONS PLL DIGITAL BENCH KH2023 Radio multi bandes 4 Bandes Ondes courtes Recherches automatique synthétiseur PLL Stabilité garantie – Mise en mémoire des stations Horloge + Réveil   - Snooze – Rétro Eclairage Pied arrière pour incliner la radio à 45° - Dragonne Alimentation par 4 piles AA ou rechargeables non fournies pour sécurité - Possibilité d’alimenter en externe fiche 6 DC Sortie pour HP amplifié ou Ecouteur fiche 3,5 mm standard Nombreuses autres possibilités Taille Long 185 mm – Haut 120 mm – Epaisseur 40 mm Poids net sans piles 420 grammes Avec manuel PDF- FRANÇAIS  / ANGLAIS /ALLEMAND 100% Opérationnel – Vendu cause double emploi Vraiment comme NEUF Autres photos sur demande ******* Digital World Receiver - PLL Bench KH2023 Features include SW/AM/LW/FM with shortwave RX/LX sensitivity selector, digital tuning with 9 favourite station presets, key lock, alarm clock, stopwatch mode, 6vDC input jack, and standard 3.5mm earphone jack socket. Telescopic aerial, flip-out 'lean' stand to the rear, wrist strap. Works with 4 x AA batteries not included for safety reasons. In good working condition - Alike new one

Radio Shack Pro-2030 Hyperscan 80Ch Direct Entry Programmable Scanning Receiver. Working condition. One note - This is marked AM/FM but I was not able to program AM or FM broadcast frequencies? Do not have the manual.   Includes antenna and power supply.   Thanks for viewing my listing! I describe my items honestly and as completely as my knowledge of the item allows. I do not omit anything that I notice about any item. The photos in this listing are of the actual item you will receive - I do not use substitute photos. Your complete satisfaction is my goal. If you are dissatisfied with your purchase, leaving me poor feedback without contacting me will not resolve the problem but if you contact me before leaving feedback, we will work it out to your satisfaction. Please feel free to ask any questions before you bid, I will respond soon as I can. I use USPS for shipping which I do every business day. Most items are automatically insured by the USPS. All items shipped to the USA will have delivery confirmation unless stated otherwise, and you will receive an email with the tracking number when I ship. Always glad to combine shipping when practical. I obtain most of my items at thrift stores, yard sales and auctions and I use both new and recycled stuff in good condition for packing and cannot say what any of my items or packing materials may have been exposed to before I get them. My country exclusion list is based on shipper recommendations, not any personal bias.

Store category Sign Up Now ! You may also like QYT KT-8900D Dual Band LCD Display Car In-Vehicle Mobile Radio Transceiver USB Product Description   Features: Dual Band,Quad-standby 25W Output Power External speaker/PTT Mini Size PC Program Remote Stun,Remote Activate,Remote Kill DTMF Function, 2 tone, 5 tone PTT-ID Code Repeater Function Long-distance Communication FM Radio Alarm Function LCD Monitor   Two Microphone version for option,and we send Option 2 at default Please click here to buy mobile radio w/option 1 microphone,thanks for your attention!   Specifications: Item number:KT-8900D Frequency Range:VHF:136-174MHz UHF:400-480MHz Number of Channel:200 Channel Spacing:25KHz 20K 12.5K Phase lock step:5KHz, 6.25 KHz, 10 KHz,12.5 KHz, 15 KHz, 25 KHz Working Voltage:13.8V DC±15% Squelch way:CTCSS/DCS/5Tone/2Tone/DTMF Frequency Stability:±2.5ppm Operating Temperature:-20℃~+60℃ Dimension(W x H x D):103(W) x 47(H) x 126(D)mm Weight:448g   Receiver   Broadband Narrow band Sensitivity ≤ 0.25μV ≤ 0.35μV Channel choice ≥70dB ≥60dB Intermodulation ≥65dB ≥60dB Spurious Rejection ≥70dB ≥70dB Audio response +1~ -3dB(0.3~3KHz) +1~ -3dB(0.3~2.55KHz) Signal to noise ratio ≥45dB ≥40dB Audio distortion ≤5% Audio output power ≥2W@10% Transmitter   Broadband Narrow band Output power 25W/20W(VHF/UHF) Modulation Mode 16KΦF3E 11KΦF3E Channel Power ≥70dB ≥60B Signal to noise ratio ≥40dB ≥36dB Parasitic harmonic ≥60dB ≥60dB Audio response +1~ -3dB(0.3~3KHz) +1~ -3dB(0.3~2.55KHz) Audio distortion ≤5%       Package includes: 1× KT-8900D Dual Band Mini Mobile Radio 1× Microphone(version 2) 1× Car Power Cable 1× Clip for Speaker Microphone 1× Mounting Bracket 1× Screw Sets 1× User Manual Payment Delivery details Terms of sales About us Contact us Payment 1. We only accept payment via PayPal, other payment is not acceptable. 2. Please make sure your shipping address is the same of your PayPal address before you pay. We will not be responsible for such a case if you change you shipping address as we have shipped your items out. Delivery details (1).Items are posted to the buyer's Paypal address, so please check your shipping address before marking payment. (2).Provided payment has been received before posting time, items will be shipped within 1-3working days. (3)Delivery usually takes between 5-7 business days. However, please keep in mind that times there may be an unusual delay in delivery by shipment carrier, which is something out of our control. Terms of sales The Successful Highest Bidder must complete the sale transaction within 8 days from the date of receipt of email notification following the end of the sale. The quicker you pay; the sooner you will receive your new purchase! It is in your best interests to pay quickly so you can start using your new product! (1) All items are shipped in Brand New Condition unless othe

1 X RADIO HYTERA PD505 UHF 4 WATT 1 X ANTENNE STANDARD UHF 1 X BATTERIE LI-ION 1500MAH 1 X TRANFO 1 X BASE DE RECHARGEMENT 1 X KIT OREILLETTE La nouvelle radio numérique Hytera PD505 impressionne par son design ergonomique légère, ses fonctionnalités et sa rentabilité élevée. Grâce à sa conception compacte, à son excellente qualité vocale et à la prise en charge de la radio numérique et analogique, le PD505 renouvel vos communications radio. Les radios portables PD505 sont conçues selon la norme DMR et répondent à toutes les exigences de cette norme ouverte. La série PD505 offre d’excellentes fonctionnalités, même dans des conditions de fonctionnement difficiles, avec un indice de protection IP54, ainsi que MIL810-C / D / E / F / G. La batterie Li-Ion peut durer jusqu'à 16 heures en mode numérique. Le PD505 prend en charge différentes méthodes de numérotation analogique, notamment HDC1200, à 2 et 5 tonalités, simplifie l'intégration dans les flottes de radios analogiques existantes. Le cryptage de base en mode numérique et la fonction Scrambler en mode analogique permettent une communication sécurisée. UTILISATION IDÉAL POUR: BANQUE RESIDENCE HOTEL SECURITE Technical Specification: Quantity Supplied: ONE Frequency Band & Range: UHF 400-470Mhz Channel Capacity: 32 Bandwidth: 12.5/25Khz Power Output: 4 Watts Max CTCSS DCS: Yes/DMR P C Programmable: Yes Current Frequencies: UK Gen - Business Lite - Free Programming No. of Channels Programmed: 16 Trunking Facility: No LCD Display: No Keypad: No Voice Encryption fitted: Yes Basic in Digital Mode Battery Chemistry: LI-ION Battery Status: New Intrinsically Safe: No General Condition: NEW Known Faults: None