Short wave communication equipment practical training platform

Abstract

The application provides a short wave communication equipment practical training platform, which comprises a base and a radio module, a switching control module, a short wave modem and a signal switching module arranged on the base; the switching control module is used for receiving signals of the radio module and transmitting the signals to the short wave modem or receiving signals of the short wave modem and transmitting the signals to the radio module; the short wave modem is used for receiving signals of the switching control module and transmitting the signals to the signal switching box or receiving signals of the signal switching box and transmitting the signals to the switching control module; the signal switching box is used for being connected with one of a vehicle-mounted terminal and a fax machine, so as to transmit digital signals to the connected one or receive signals of the connected one and transmit the signals to the short wave modem; the vehicle-mounted terminal is used for processing received signals and displaying; and the fax machine is used for identifying and printing received data. The application aims to provide a short wave communication equipment practical training platform which can be simultaneously applied to various communication devices.

Description

Technical Field

[0001] This invention relates to the field of communication equipment, and more specifically to a shortwave communication equipment training platform. Background Technology

[0002] In the military, traditional communication training requires training on equipment equipped with such devices. Due to mobility requirements, this equipment is generally integrated into a compartment on a vehicle. The compartment space is small, making it inconvenient for group teaching, practical training, and other work. Moreover, the number of equipment is limited, and frequent use and training can lead to varying degrees of aging and malfunctions. Furthermore, the communication equipment of different units (such as shortwave radios, VHF radios, and fax machines) has independent links and is suitable for different environments, resulting in difficulties in teaching.

[0003] Therefore, it is necessary to propose a shortwave communication equipment training platform that can be applied to multiple communication devices simultaneously. Summary of the Invention

[0004] The main objective of this invention is to provide a shortwave communication equipment training platform that can be applied to multiple communication devices simultaneously.

[0005] To achieve the above objectives, the present invention proposes a shortwave communication equipment training platform, which includes a base and a radio module, a switching control module, a shortwave modem, and a signal switching module disposed on the base.

[0006] The radio module, the switching control module, and the shortwave modem module are respectively connected to a power source. The radio module is used to receive external signals or transmit radio frequency signals to the outside.

[0007] The switching control module is connected to both the radio module and the shortwave modem, and is used to receive analog signals from the radio module and transmit the analog signals to the shortwave modem, or to receive analog signals from the shortwave modem and transmit the analog signals to the radio module after switching.

[0008] The shortwave modem is connected to the signal switching module and the switching control module respectively, and is used to receive analog signals from the switching control module and convert the analog signals into digital signals for transmission to the signal switching module, or to receive digital signals from the signal switching module and convert the digital signals into analog signals for transmission to the switching control module.

[0009] The signal switching module is used to connect to one of the vehicle terminal and the fax machine, thereby transmitting the received digital signal to the connected one or receiving the signal from the connected one and transmitting it to the shortwave modem. The vehicle terminal is used to process the received signal and display it, and the fax machine is used to identify and print the received data.

[0010] Preferably, the radio module includes a shortwave component and a VHF / UHF component;

[0011] The shortwave component includes a shortwave interface module, a first power supply, a shortwave radio, an antenna tuner, and a first antenna.

[0012] The shortwave interface module is connected to the switching control module and the shortwave radio respectively, and is used to adapt to different shortwave radios and transmit the radio frequency signal of the shortwave radio to the switching control module.

[0013] The shortwave radio, the antenna tuner, and the first antenna are connected in sequence to transmit the radio frequency signal of the shortwave radio to the outside through the antenna, or to receive external radio frequency signals through the antenna and transmit the received radio frequency signals to the shortwave radio through the antenna tuner.

[0014] The first power source is connected to the shortwave radio and is used to supply power to the shortwave radio.

[0015] The UHF component includes an UHF interface module, an UHF radio, and a second antenna. The UHF interface is connected to the UHF radio and the switching control module, respectively, and is used to receive the radio frequency signal of the UHF radio and transmit it to the switching control module.

[0016] The VHF radio is connected to the transfer control module and the antenna, and is used to receive external radio frequency signals received by the second antenna and transmit them to the transfer control module, or to receive radio frequency signals emitted by the transfer control module and transmit them to the second antenna for external transmission.

[0017] Preferably, the shortwave communication equipment training platform further includes a load module, which is used to connect to the shortwave radio or the ultra-shortwave radio when the communication distance between the shortwave radio or the ultra-shortwave radio and the external communication equipment is reduced to a set distance, so as to receive the power of the radio connected to the load module, thereby enabling the radio connected to the load module to achieve short-distance antenna-free communication with the external radio.

[0018] Preferably, the shortwave communication equipment training platform further includes a calculation module, which is used for:

[0019] Measure the output power and output impedance of the radio;

[0020] Calculate the effective radiated power of the radio station based on its output power and output impedance;

[0021] Based on the radio station’s effective radiated power and minimum receivable signal strength, calculate the maximum distance at which the radio station can communicate with an external radio station without an antenna.

[0022] Obtain the actual distance between the radio station and external radio stations, and determine whether the actual distance exceeds the maximum distance;

[0023] If not, issue a first communication method reminder, which includes: prompting the removal of the antenna and the installation of the load module on the radio;

[0024] If so, a second communication method reminder will be sent, which includes prompting the installation of the antenna and the removal of the load module from the radio.

[0025] Preferably, the shortwave communication equipment training platform further includes a wired modem, which is connected to both the vehicle-mounted terminal and the wired network interface. The vehicle-mounted terminal can connect to the wired network interface via the wired modem to access the wired network for communication.

[0026] Preferably, the shortwave communication equipment training platform further includes a second power supply and a splitter board. The splitter board is used to connect to an external power supply and is connected to the shortwave modem, the wired modem, the vehicle terminal, and the fax machine respectively, for supplying power to the shortwave modem, the wired modem, the vehicle terminal, and the fax machine. The second power supply is connected to the VHF radio and is used to supply power to the VHF radio.

[0027] Preferably, the platform is provided with a mounting frame, and the shortwave radio, the wired modem, the switching control module and the VHF radio are installed in layers on the mounting frame. The VHF radio is located on the top of the mounting frame. The mounting frame is also provided with an antenna bracket, which is used to install the antenna and increase the height of the antenna.

[0028] Preferably, when the wired modem is connected to the wired network interface, the wired modem can receive signals from the wired network and transmit them to the transfer control module. The transfer control module can then transmit the signals to the radio module to send information to the outside through the radio module.

[0029] Preferably, the voice data of the shortwave radio can be directly transmitted to an external radio for plaintext communication, the voice data of the shortwave radio can be transmitted to the switching control module and input to the modem through the vocode port of the switching control module for encryption, and the signal switching module is used to transmit the encrypted analog data back to the shortwave radio for encrypted communication.

[0030] Preferably, the shortwave communication equipment training platform further includes an encryption control module, which is used for:

[0031] After the shortwave radio is connected to the vehicle-mounted terminal, plaintext communication or encrypted communication can be selected according to communication needs and environment.

[0032] When choosing plaintext communication, you can communicate with the receiver directly via shortwave radio or transmit data directly to the receiver via vehicle-mounted terminal.

[0033] When the encrypted communication method is selected, the voice data of the shortwave radio is transmitted to the shortwave modem through the transfer control module, the voice data is encrypted, and the encrypted data is sent to the receiver, or the encrypted data sent by the sender is received and the encrypted data is decrypted through the shortwave modem. The decrypted voice data is then transmitted to the radio module through the transfer control module for communication.

[0034] In summary, the shortwave communication equipment training platform proposed in this invention integrates a radio module, a switching control module, a shortwave modem, a signal switching module, a vehicle-mounted terminal, and a fax machine on a base. Through the switching control module and the shortwave modem, the links of the radio module, the vehicle-mounted terminal, and the fax machine can be mutually adapted, allowing the operation of multiple communication devices on the same platform. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the structure of an embodiment of the shortwave communication equipment training platform of the present invention;

[0037] Figure 2 This is a schematic diagram of the working principle of the shortwave communication equipment training platform of the present invention;

[0038] Explanation of icon numbers:

[0039] 1-Shortwave radio; 2-UHF radio; 2a-UHF controller; 3-Wired modem; 4-Shortwave modem; 5-Transfer control module; 6-Signal transfer module; 7-Vehicle terminal; 8-Fax machine; 9-First power supply; 10-Second power supply; 11-Splitter board; 12-Mounting bracket; 13-Load module; 14-Antenna tuner; 15-Base.

[0040] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0043] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0045] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0046] This invention proposes a training platform for shortwave communication equipment.

[0047] Please refer to Figures 1 to 2 The shortwave communication equipment training platform proposed in this invention includes a base 15 and a radio module, a switching control module 5, a shortwave modem 4 and a signal switching module 6 disposed on the base 15;

[0048] The radio module, the switching control module 5, and the shortwave modem 4 module are respectively connected to the power supply. The radio module is used to receive external signals or send radio frequency signals to the outside.

[0049] The switching control module 5 is connected to the radio module and the shortwave modem 4 respectively, and is used to receive the analog signal from the radio module and transmit the analog signal to the shortwave modem 4, or receive the analog signal from the shortwave modem 4 and transmit the analog signal to the radio module after switching.

[0050] The shortwave modem 4 is connected to the signal switching module and the switching control module 5 respectively, and is used to receive analog signals from the switching control module 5 and convert the analog signals into digital signals for transmission to the signal switching module, or to receive digital signals from the signal switching module and convert the digital signals into analog signals for transmission to the switching control module 5.

[0051] The signal switching module is used to connect to one of the vehicle terminal 7 and the fax machine 8, thereby transmitting the received digital signal to the connected one or receiving the signal from the connected one and transmitting it to the shortwave modem 4. The vehicle terminal 7 is used to process the received signal and display it, and the fax machine 8 is used to identify and print the received data.

[0052] In this embodiment, the vehicle terminal 7 is a computer, the fax machine 8 is connected to the vehicle terminal 7, the fax machine 8 can process and print the signals transmitted by the vehicle terminal 7, and the fax machine 8 can recognize external images and transmit the image data to the vehicle terminal 7 for display.

[0053] In summary, the shortwave communication equipment training platform proposed in this invention integrates a radio module, a switching control module 5, a shortwave modem 4, a signal switching module 6, a vehicle-mounted terminal 7, and a fax machine 8 on a base 15. Through the switching control module 5 and the shortwave modem 4, the links of the radio module, the vehicle-mounted terminal 7, and the fax machine 8 can be mutually adapted, allowing the use and operation of multiple communication devices on the same platform.

[0054] Preferably, the radio module includes a shortwave component and a VHF / UHF component;

[0055] The shortwave component includes a shortwave interface module, a first power supply 9, a shortwave radio 1, an antenna tuner 14, and a first antenna.

[0056] The shortwave interface module is connected to the transfer control module 5 and the shortwave radio 1 respectively, and is used to adapt to different shortwave radios 1 and transmit the radio frequency signal of the shortwave radio 1 to the transfer control module 5.

[0057] The shortwave radio 1, the antenna tuner, and the first antenna are connected in sequence to transmit the radio frequency signal of the shortwave radio 1 to the outside through the antenna, or to receive external radio frequency signals through the antenna and transmit the received radio frequency signals to the shortwave radio 1 through the antenna tuner 14.

[0058] The first power supply 9 is connected to the shortwave radio 1 and is used to supply power to the shortwave radio 1;

[0059] The UHF component includes an UHF interface module, an UHF radio 2, and a second antenna. The UHF interface is connected to the UHF radio 2 and the switching control module 5, respectively, and is used to receive the radio frequency signal of the UHF radio 2 and transmit it to the switching control module 5.

[0060] The VHF radio 2 is connected to the transfer control module 5 and the antenna, and is used to receive external radio frequency signals received by the second antenna and transmit them to the transfer control module 5, or to receive radio frequency signals emitted by the transfer control module 5 and transmit them to the second antenna for external transmission. In this embodiment, the vehicle terminal 7 can access the shortwave channel via the transfer control module 5 through the shortwave modem 4. In addition, the field fax machine 8 can access the shortwave channel via the transfer control module 5 through the shortwave modem 4.

[0061] In a preferred embodiment, the shortwave communication equipment training platform also includes a handheld radio, which can communicate with the VHF radio 2 via voice on the VHF channel; the two handheld radios can also communicate directly with each other via voice; in addition, the two handheld radios can communicate via the VHF radio 2 via relay communication, which can increase the communication distance between the two handheld radios.

[0062] In another preferred embodiment, the VHF component further includes a VHF controller 2a, which is a control device for the VHF radio station 2.

[0063] Preferably, the shortwave communication equipment training platform further includes a load module 13. The load module 13 is used to connect to the shortwave radio 1 or the VHF radio 2 when the communication distance between the shortwave radio 1 or the VHF radio 2 and the external communication equipment is reduced to a set distance, thereby receiving the power of the radio connected to the load module 13. This enables the radio connected to the load module 13 to achieve short-range antenna-free communication with the external radio. In this embodiment, the load module 13 includes multiple loads with different power ratings. Different power loads can handle different amounts of power, allowing the selection of loads with different power ratings based on the power of the radio. The power calculation formula for the required load is as follows: ,in The power of the radio station connected to the load. The power required by the load.

[0064] Preferably, the shortwave communication equipment training platform further includes a calculation module, which is used for:

[0065] Measure the output power and output impedance of the radio;

[0066] Calculate the effective radiated power of the radio station based on its output power and output impedance;

[0067] Based on the radio station’s effective radiated power and minimum receivable signal strength, calculate the maximum distance at which the radio station can communicate with an external radio station without an antenna.

[0068] Obtain the actual distance between the radio station and external radio stations, and determine whether the actual distance exceeds the maximum distance;

[0069] If not, issue a first communication method reminder, which includes: prompting the removal of the antenna and the installation of the load module 13 on the radio;

[0070] If so, a second communication method reminder will be issued, which includes prompting the installation of the antenna and the removal of the load module 13 from the radio. The minimum acceptable signal strength (MDS) refers to the lowest input signal strength required for the receiver to detect and correctly demodulate the signal.

[0071] The formula for calculating MDS is: ;

[0072] Where -174dBm / Hz is the thermal noise power spectral density, BW is the receiver bandwidth, NF is the noise figure, and Eb / N0 is the ratio of bit energy to noise power spectral density.

[0073] D refers to the maximum distance allowed for reliable communication between the transmitter and receiver under given frequency and transmission conditions.

[0074] The formula for calculating D is:

[0075] Where K is a constant that depends on the propagation environment and frequency, PL is path loss, OL is obstacle attenuation, and P is the effective radiated power of the radio station.

[0076] Preferably, the shortwave communication equipment training platform further includes a wired modem 3, which is connected to both the vehicle-mounted terminal 7 and the wired network interface. The vehicle-mounted terminal 7 can connect to the wired network interface via the wired modem 3 to access the wired network for communication. A computer can access the wired network through the wired modem 3, thereby enabling data communication with computer users on the wired network.

[0077] Preferably, the shortwave communication equipment training platform further includes a second power supply 10 and a splitter board 11. The splitter board 11 is used to connect to an external power supply and is connected to the shortwave modem 4, the wired modem 3, the vehicle-mounted terminal 7, and the fax machine 8, respectively, to supply power to the shortwave modem 4, the wired modem 3, the vehicle-mounted terminal 7, and the fax machine 8. The second power supply 10 module is connected to the VHF radio 2 to supply power to the VHF radio 2. The second power supply 10 provides DC power to the VHF radio 2, and the splitter board 11 is used to connect to an external AC power supply and convert one set of AC power into multiple sets of AC power to supply power to the shortwave modem 4, the wired modem 3, the vehicle-mounted terminal 7, and the fax machine 8 respectively.

[0078] Preferably, the platform is provided with a mounting frame 12, on which the shortwave radio 1, the wired modem 3, the switching control module 5, and the VHF radio 2 are installed in layers. The VHF radio 2 is located at the top of the mounting frame 12. The mounting frame 12 is also provided with an antenna bracket for mounting the antenna and increasing its height. Installing the shortwave radio 1, wired modem 3, switching control module 5, and VHF radio 2 in layers on the mounting frame 12 saves space required for communication equipment layout, reduces the complexity of the shortwave communication equipment training platform, and makes the layout and connection relationships of each communication device clearer and neater, facilitating operation and training for the operator.

[0079] By setting up the antenna support, the height of the antenna is increased, the propagation conditions of the VHF signal are improved, and the communication range and effect are expanded.

[0080] Preferably, when the wired modem 3 is connected to a wired network interface, the wired modem 3 can receive signals from the wired network and transmit them to the transfer control module 5. The transfer control module 5 can then transmit the signals to the radio module to send information to the outside via the radio module. The transfer control module 5 can also receive the wireless signals from the radio module, convert the wireless signals into wired signals via the wired modem 3, and transmit them to the wired network for communication.

[0081] Preferably, the voice data of the shortwave radio 1 can be directly transmitted to an external radio for plaintext communication. The voice data of the shortwave radio 1 can also be transmitted to the transfer control module 5 and encrypted by inputting it into the modem via the vocode port of the transfer control module 5. The signal transfer module 6 is used to transmit the encrypted analog data back to the shortwave radio 1 for encrypted communication. Plaintext communication can be performed through the shortwave radio 1, and the communication methods can include LSB (least significant bit), USB (Universal Serial Bus), AM (amplitude modulation), etc. It can also perform keypad or electronic key communication, operating in CW (constant amplitude telegraph communication). In this embodiment, the shortwave radio 1 is an adaptive frequency-hopping radio, which can establish a communication channel through adaptive functions to perform plaintext, vocode, data, or fax communication, and can also realize plaintext communication in frequency-hopping mode.

[0082] In this embodiment, the shortwave radio 1 is connected to the vehicle-mounted terminal 7, so that the vehicle-mounted terminal 7 can directly access the shortwave channel through the shortwave radio 1 to perform minimal functional communication.

[0083] Preferably, the shortwave communication equipment training platform further includes an encryption control module, which is used for:

[0084] After the shortwave radio 1 is connected to the vehicle-mounted terminal 7, either plaintext communication or encrypted communication can be selected according to communication needs and environment.

[0085] When choosing plaintext communication, you can communicate with the receiver directly via shortwave radio 1 or transmit data directly to the receiver via vehicle terminal 7.

[0086] When the encrypted communication method is selected, the voice data of the shortwave radio 1 is transmitted to the shortwave modem 4 through the transfer control module 5, the voice data is encrypted, and the encrypted data is sent to the receiver, or the encrypted data sent by the sender is received and the encrypted data is decrypted through the shortwave modem 4, and the decrypted voice data is transmitted to the radio module through the transfer control module 5 for communication.

[0087] The encryption control module features a human-machine interface and can connect to the transfer control module 5 and the shortwave modem 4 via cable or wirelessly. After the shortwave radio 1 connects to the vehicle terminal 7, the encryption control module can select between plaintext and encrypted communication modes based on communication needs and the environment, and operate and display the information through input / output devices such as a display screen and buttons. When plaintext communication is selected, the encryption control module instructs the transfer control module 5 to directly transmit data to the shortwave radio 1 for voice communication with the receiver. When encrypted communication is selected, the encryption control module instructs the transfer control module 5 to transmit data from the vehicle terminal 7 to the shortwave modem 4, encrypt the data using the shortwave modem 4, and then send the encrypted data to the receiver.

[0088] In a preferred embodiment, the shortwave radio 1 is a 220 radio or a 154 radio, the first power supply 9 is a 220 power supply, the antenna tuner 14 is a 220 antenna tuner, the VHF radio 2 is a TCR-181D type vehicle-mounted communication system radio, the switching control module 5 is a 744 type controller, the shortwave modem 4 is a 301A shortwave modem or a 303 shortwave modem, and the wired modem 3 is a 144 vehicle-mounted wired modem.

[0089] Table 1 shows the cable relationships between various communication devices in the shortwave communication equipment training platform.

[0090]

[0091] Table 1

[0092] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural transformations made under the concept of the present invention using the description and drawings of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A shortwave communication equipment training platform, characterized in that, Includes a base and a radio module, a transfer control module, a shortwave modem, and a signal conversion module disposed on the base; The radio module, the switching control module, and the shortwave modem module are respectively connected to a power source. The radio module is used to receive external signals or transmit radio frequency signals to the outside. The switching control module is connected to the radio module and the shortwave modem respectively, and is used to receive the analog signal from the radio module and transmit the analog signal to the shortwave modem, or receive the analog signal from the shortwave modem and transmit the analog signal to the radio module after switching. The shortwave modem is connected to the signal switching module and the switching control module respectively, and is used to receive analog signals from the switching control module and convert the analog signals into digital signals for transmission to the signal switching module, or to receive digital signals from the signal switching module and convert the digital signals into analog signals for transmission to the switching control module. The signal switching module is used to connect to one of the vehicle terminal and the fax machine, thereby transmitting the received digital signal to the connected one or receiving the signal from the connected one and transmitting it to the shortwave modem. The vehicle terminal is used to process the received signal and display it, and the fax machine is used to identify and print the received data. The radio module includes a shortwave component and a VHF / UHF component; The shortwave component includes a shortwave interface module, a first power supply, a shortwave radio, an antenna tuner, and a first antenna. The shortwave interface module is connected to the switching control module and the shortwave radio respectively, and is used to adapt to different shortwave radios and transmit the radio frequency signal of the shortwave radio to the switching control module. The shortwave radio, the antenna tuner, and the first antenna are connected in sequence to transmit the radio frequency signal of the shortwave radio to the outside through the antenna, or to receive external radio frequency signals through the antenna and transmit the received radio frequency signals to the shortwave radio through the antenna tuner. The first power source is connected to the shortwave radio and is used to supply power to the shortwave radio. The UHF component includes an UHF interface module, an UHF radio, and a second antenna. The UHF interface is connected to the UHF radio and the switching control module, respectively, and is used to receive the radio frequency signal of the UHF radio and transmit it to the switching control module. The VHF radio is connected to the transfer control module and the antenna, and is used to receive external radio frequency signals received by the second antenna and transmit them to the transfer control module, or to receive radio frequency signals emitted by the transfer control module and transmit them to the second antenna for external transmission. The shortwave communication equipment training platform also includes a load module. The load module is used to connect to the shortwave radio or the ultra-shortwave radio when the communication distance between the shortwave radio or the ultra-shortwave radio and the external communication equipment is reduced to a set distance, so as to receive the power of the radio connected to the load module, thereby enabling the radio connected to the load module to achieve short-distance antenna-free communication with the external radio. The shortwave communication equipment training platform also includes a calculation module, which is used for: Measure the output power and output impedance of the radio; Calculate the effective radiated power of the radio station based on its output power and output impedance; Based on the radio station’s effective radiated power and minimum receivable signal strength, calculate the maximum distance at which the radio station can communicate with an external radio station without an antenna. Obtain the actual distance between the radio station and external radio stations, and determine whether the actual distance exceeds the maximum distance; If not, issue a first communication method reminder, which includes: prompting the removal of the antenna and the installation of the load module on the radio; If so, a second communication method reminder will be sent, which includes prompting the installation of the antenna and the removal of the load module from the radio. The shortwave communication equipment training platform also includes a wired modem, which is connected to the vehicle terminal and the wired network interface respectively. The vehicle terminal can connect to the wired network interface through the wired modem to access the wired network for communication. The voice data of the shortwave radio can be directly transmitted to an external radio for plaintext communication. The voice data of the shortwave radio can also be transmitted to the switching control module and input to the modem through the vocode port of the switching control module for encryption. The signal switching module is used to send the encrypted analog data back to the shortwave radio for encrypted communication.

2. The shortwave communication equipment training platform according to claim 1, characterized in that, It also includes a second power supply and a splitter board. The splitter board is used to connect to an external power supply and is connected to the shortwave modem, the wired modem, the vehicle terminal, and the fax machine respectively, for supplying power to the shortwave modem, the wired modem, the vehicle terminal, and the fax machine. The second power supply is connected to the VHF radio and is used to supply power to the VHF radio.

3. The shortwave communication equipment training platform according to claim 1, characterized in that, The platform is equipped with a mounting frame, on which the shortwave radio, the wired modem, the switching control module, and the VHF radio are installed in layers. The VHF radio is located on the top of the mounting frame. The mounting frame is also equipped with an antenna bracket, which is used to install the antenna and increase its height.

4. The shortwave communication equipment training platform according to claim 1, characterized in that, When the wired modem is connected to the wired network interface, the wired modem can receive signals from the wired network and transmit them to the transfer control module. The transfer control module can then transmit the signals to the radio module to send information to the outside through the radio module.

5. The shortwave communication equipment training platform according to claim 1, characterized in that, It also includes an encryption control module, which is used for: After the shortwave radio is connected to the vehicle-mounted terminal, plaintext communication or encrypted communication can be selected according to communication needs and environment. When choosing plaintext communication, you can communicate with the receiver directly via shortwave radio or transmit data directly to the receiver via vehicle-mounted terminal. When the encrypted communication method is selected, the voice data of the shortwave radio is transmitted to the shortwave modem through the transfer control module, the voice data is encrypted, and the encrypted data is sent to the receiver, or the encrypted data sent by the sender is received and the encrypted data is decrypted through the shortwave modem. The decrypted voice data is then transmitted to the radio module through the transfer control module for communication.

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