Short Wave Centralized Control & Management Communication System
1 Main purposes
Short wave centralized control communication system is a new short wave communication management system for the use of centralized control and management over various short wave equipment. This system executes tri-remote (i.e., remote control, remote metering and remote communication) control over short wave equipment, implements unified scheduling and centralized control & management of short-wave receiver, transmitter, self-adapting controller and user terminal etc., fulfills automatic processing of information, implements networking of short wave communication, communication automation and other communication networks, and fulfills long-distance transmission of voice, message, data, image and other business information. This system improves the level of automation & intelligentization and communication efficiency of short wave communication.
2 Main functions
1) Capable of controlling short wave equipment in 10 ways (receiver, transmitter and self-adapting controller) simultaneously；
2) Implementing the preparation and downloading of communication plans via centralized control console；
3) Dynamically monitoring the operating status of various equipment；
4) Daily work management；
5) Providing data communication breakpoint protection and function of continuous transmission；
6) Implementing automatic switching between terminal equipment and channel equipment；
7) Providing service telephone function；
8) Capable of implementing remote-control operation of transmitter；
9) Providing wired/wireless switching function.
Short Wave Solid-state Integrated Communication System
1. Main purposes and characteristics
Adopting all-solid-state, digital, power synthesis and anti-interference design and boasting excellent electromagnetic compatibility, short wave solid-state integrated communication system can open two-way narrowband transmitting channel, four-way wideband transmitting channel and nine-way receiving channel simultaneously, provide self-adapting/frequency hopping and network communication functions, and adapt to ship-mounted multichannel networking communication requirements.
Adopting modular and universal design, most of the modules inside the system are interchangeable;
The exciter adopts digital technology without intermediate frequency;
The receiver adopts digital technology with high and intermediate frequency;
The transmitter is of high linearity and low noise;
The narrowband system is capable of interference resistance and tuning;
Transmitting-transmitting frequency interval and receiving-transmitting frequency interval reach 2.5%
2. Main technical indexes:
2.1 Broadband transmitting subsystem
1) Frequency range：.
2) Working mode: USB, LSB, ISB, AM, CW, MCW/NCW and DATA
3) Max. transmitting power and the number of opened channels:
Four channels may be opened simultaneously with the max. power of broadband at 4kW
The output power of each channel may attenuate in steps of 0.5dB (totaling 32dB) downwards from the max. output power.
4) Audio frequency response：≤ 2dB(300～3,000Hz).
5) Harmonic suppression：≤-60dB.
6) Intra-band intermodulation：≤-36dB（PEP）.
7) Out-of-band intermodulation：≤ -60dB（PEP）.
8) Broadband noise：≤-158dB/Hz (at a distance of 2.5% from the transmitting frequency or 100kHz, whichever is greater).
9) Cooling mode: air cooling.
2.2 Narrowband transmitting subsystem
1) Frequency range：.
2) Working mode: USB, LSB, ISB, AM, CW, MCW/NCW and DATA
3) Output power：1kW dB.
4) Voltage standing wave ratio (VSWR)：superior over 3:1(50 unbalanced output).
5) Harmonic suppression：≤-60dB.
6) Audio frequency response：≤2dB (300～3,000Hz).
7) Intermodulation：≤-36dB（PEP）。
8) Tuning time: within working frequency range, tuning time doesn’t exceed 1s; in case of secondary call, tuning time is less than 1s.
9) Broadband noise：≤-158dB/Hz (at a distance of 2.5% from the transmitting frequency or 100kHz, whichever is greater).
2.3 Receiving subsystem
1) Frequency range：.
2) Working mode：USB，LSB，ISB，CW，AM，DATA，DATA LINK，MCW，NCW and FSK.
3) Sensibility（SSB）: at any tunable frequency of 1.5～29.999999MHz, and in case of SINAD＝10dB, the sensibility of 3kHz bandwidth as measured shall not be inferior to -111dBm.
4) Automatic gain control（AGC）: when the level at the input terminal of antenna varies from -107dBm to+13dBm, the output level of receiver varies within the scope of 3dB in relation to the standard audio frequency output level.
5) Audio frequency output level: line output: 600, balanced and unearthed, 0dBm；
6) Spurious response: as there is a 106dBuV（EMF）interference signal ranging from 1.5 to 30MHz at the output terminal of active antenna, its complementary wave response shall be superior to -106dB when the signal leaves 100kHz or 2.5% tuning frequency (whichever is greater).
7) Combination tone: points with noise factor more than 24dB within the range of 1.5～29.999999MHz are not more than 8;
8) Intermediate resistance ratio: ≥100dB；
9) Image resistance ratio: ≥100dB.
2.4 Self-adapting/frequency hopping controller
1) Self-adapting controller: built-in, conforming to requirements of GJB 2076, GJB 2077 and GJB 3249.
2) Frequency hopping controller: built-in, conforming to requirements of GJB 2929.
3) Frequency hopping rate: 5Hops/s, 10Hops/s and 20Hops/s.
4) Frequency hopping bandwidth：
64kHz（working frequency 2MHz～3.99999MHz）；
128kHz(working frequency 4MHz～9.99999MHz)；
256kHz(working frequency 10MHz～29.99999MHz)。
5) Frequency number of frequency hopping：32.
6) Synchronization time：≤3.9s.
Knapsack 20W Short Wave Communication Equipment
1. Main purposes and characteristics
Knapsack 20W short wave communication equipment is mainly used in traveling knapsack communication, and also in motor vehicle-mounted and fixed communication situations, etc. in combination with 125W power amplifier. The equipment efficiently combines such anti-interference means as digital frequency hopping, bursting data and data communication to the lowest extent, fully demonstrating communication in motion, communication in interference and reliable communication. Its characteristics are as follows:
1) Automatic control communication function: The equipment can automatically detect the interference with channels according to the business selected by users, intelligently select the optimum anti-interference method and automatically build and maintain communication chain circuit with the operating state of the called party automatically tracking that of the calling party so as to accomplish automated communication.
2) Comprehensive anti-interference communication function: By comprehensive application of such anti-interference means as digital frequency hopping, bursting data and data communication to the lowest extent, the equipment ensures reliable and rapid information communication and transmission in harsh electromagnetic environment.
3) 600bps low-speed acoustic code voice communication function. It breaks through the contradiction between low coding speed rate and high voice quality, and solves poor-quality voice communication of previous short wave communication equipment under interference conditions so as to ensure reliable communication of broadcasting stations under fixed frequency and frequency hopping conditions with voice quality greatly improved.
4) Error-free data transmission function. It solves such problems of previous short wave communication equipment as low data transmission rate, high bit error rate, and unavailable data communication under frequency hopping, and enables short wave communication equipment to reliably transmit data at higher rate.
5) Adopting OLED display, which provides high-brightness, ultra-wide visual angle, high and low-temperature resistance characteristics, and all-Chinese menu type operation in Chinese characters, which is easy to learn and use.
6) Handheld controller which can accomplish wired full function remote control within 1km and be used as information terminal in Chinese characters.
2. Main performance indexes
1) Frequency range：；
2) Frequency interval：10Hz；
3) Output power：20W±1dB（USB，LSB，CW）；
4) Reference sensibility：1μV(terminal voltage)，SINAD≥12dB （USB and LSB）；
5) Audio response：≤3dB（300～3000Hz）；
6) Total distortion factor：≤3%；
7) Relative audio-frequency intermodulation (intra-band intermodulation): ≤-40dB；
8) Relative audio-frequency intermodulation product level (intermodulation distortion）: ≤-28dB；
9) Intra-band noise：≤-80dB/Hz
10) Congestion：≥100dBμV；
11) Antenna types adaptable to antenna tuner：2.4m whip antenna，15m inclined antenna, and portable bipolar antenna；
12) Initial tuning time of antenna tuner：≤5s；
13) Preset channel tuning time of antenna tuner：≤50ms；
14) Working temperature:-40～55℃；
15) MTBF(θ1)：≥1,200h.
1000W Short Wave Communication System
1. Main purposes and characteristics
1000W short wave communication system is mainly used in motor vehicle-mounted, fixed and ship-mounted situations, etc. This communication system focuses on digital, modular and anti-interference design, adopts the design scheme of “no intermediate frequency” short-wave digital exciter and “high intermediate frequency” short-wave digital receiver, and the design idea of comprehensive digital business cell integrating dedicated control, voice code and modulation & demodulation, as well as provides such functions as automatic control communication, digital frequency hopping, error-free data transmission and data communication to the lowest extent. What’s more, it uses full-solid-state power amplifier modules, effectively improving technical indexes and performance of the entire system. This communication system may form communication network together with other communication equipment so as to fulfill point-to-point or point-to-multipoint communication.
2. Main performance indexes
2.1 Main technical indexes of 1000W short wave transmitter
1) Frequency range：；
2) Frequency interval：10Hz；
3) Work categories：USB, LSB, ISB, AM and CW；
4) Channel memory：1,000；
5) Output power：1000W±1dB；
6) Frequency stability：1×10-8/d；
7) Relative audio-frequency intermodulation product：≤-30dB；
8) Harmonic suppression：≤-50dB；
9) Carrier suppression：≤-70dB；
10) Sideband suppression：≤-70dB；
11) Continuous working time：24h.
2.2 Main technical indexes of short wave digital receiver
1) Frequency range：；
2) Frequency interval：1Hz；
3) Work categories：USB, LSB, ISB, AM and CW；
4) Frequency stability：1×10-8/d；
5) Sensibility：≤0.5μV SINAD=12dB；
6) Audio response：≤2dB（300～3000Hz）；
7) Total distortion factor：≤2%；
8) Inverse mixture：≥95dBV.
2.3 Functional indexes of short wave comprehensive digital business cell
1) New-type automatic communication function;
2) Digital encryption function;
3) 600bit/s low-speed voice coding function;
4) Fixed frequency data communication function;
5) Ultra low-speed anti-interference data transmission function;
6) Short messages in Chinese characters.
7) Frequency hopping function.
2.4 Indexes of automatic antenna tuner of transmitter
1) Tuning time：storage ≤50ms，nonstorage ≤3s；
2) Tuning accuracy (VSWR)：≤1.5.
3. Components of equipment
1) 1000W short wave transmitter；
2) Short wave digital receiver；
3) Short wave comprehensive digital business cell；
4) Automatic antenna tuner.
400W Short Wave Communication System
1. Main purposes and characteristics
400W short wave communication system is mainly used in motor vehicle-mounted, fixed and ship-mounted situations, etc. This communication system focuses on digital, modular and anti-interference design, adopts the design scheme of “no intermediate frequency” short-wave digital exciter and “high intermediate frequency” short-wave digital receiver, and the design idea of comprehensive digital business cell integrating dedicated control, voice code and modulation & demodulation, as well as provides such functions as automatic control communication, digital frequency hopping, error-free data transmission and data communication to the lowest extent. What’s more, it uses full-solid-state power amplifier modules, effectively improving technical indexes and performance of the entire system. This communication system may form communication network together with other communication equipment so as to fulfill point-to-point or point-to-multipoint communication.
2. Main performance indexes
2.1 Main technical indexes of 400W short wave transmitter
1) Frequency range：；
2) Frequency interval：10Hz；
3) Work categories：USB, LSB, ISB, AM and CW；
4) Channel memory：1 ,000；
5) Output power：average power 400W±1dB；
6) Frequency stability：1×10-7/d；
7) Relative audio-frequency intermodulation product：≤-30dB；
8) Harmonic suppression：≤-50dB；
9) Carrier suppression：≤-70dB；
10) Sideband suppression：≤-70dB；
11) Continuous working time：24h.
2.2 Main technical indexes of short wave digital receiver
1) Frequency range：；
2) Frequency interval：1Hz；
3) Work categories：USB, LSB, ISB, AM and CW；
4) Frequency stability：1×10-7/d；
5) Sensibility:≤1μV SINAD=12dB；
6) Audio response：≤2dB（300～3000Hz）；
7) Total distortion factor：≤2%；
8) Inverse mixture：≥85dBV.
2.3 Functional indexes of short wave comprehensive digital business cell
1) New-type automatic communication function;
2) Digital encryption function;
3) 600bit/s low-speed voice coding function;
4) Fixed frequency data communication function;
5) Ultra low-speed anti-interference data transmission function;
6) Short messages in Chinese characters.
7) Frequency hopping function.
2.4 Main technical indexes of automatic antenna tuner
1) Tuning time：storage ≤50ms，nonstorage ≤3s；
2) Tuning accuracy (VSWR)：≤1.5.
3. Components of equipment
1) 400W short wave transmitter；
2) Short wave digital receiver；
3) Short wave comprehensive digital business cell；
5) Automatic antenna tuner.
125W Short Wave Communication Equipment
1. Main purposes and characteristics
125W short wave communication equipment is mainly used in motor vehicle-mounted, fixed and ship-mounted situations, etc. The equipment efficiently combines such anti-interference means as digital frequency hopping, bursting data and data communication to the lowest extent, fully demonstrating communication in motion, communication in interference and reliable communication. Its characteristics are as follows:
1) Automatic control communication function: The equipment can automatically detect the interference with channels according to the business selected by users, intelligently select the optimum anti-interference method and automatically build and maintain communication chain circuit with the operating state of the called party automatically tracking that of the calling party so as to accomplish automated communication.
2) Comprehensive anti-interference communication function: By comprehensive application of such anti-interference means as digital frequency hopping, bursting data and data communication to the lowest extent, the equipment ensures reliable and rapid information communication and transmission in harsh electromagnetic environment.
3) 600bps low-speed acoustic code voice communication function. It breaks through the contradiction between low coding speed rate and high voice quality, and solves poor-quality voice communication of previous short wave communication equipment under interference conditions so as to ensure reliable communication of broadcasting stations under fixed frequency and frequency hopping conditions with voice quality greatly improved.
4) Error-free data transmission function. It solves such problems of previous short wave communication equipment as low data transmission rate, high bit error rate, and unavailable data communication under frequency hopping, and enables short wave communication equipment to reliably transmit data at higher rate.
5) Adopting large-screen electroluminescent graphic display, which provides high-brightness, ultra-wide visual angle, high and low-temperature resistance characteristics, and all-Chinese menu type large-screen operation & display in Chinese characters, which is easy to learn and use, and can be used as information terminal.
20kW Short Wave Communication System
1. Main purposes and characteristics
As a new generation of high power transmitter specially designed for base station, 20kW short wave communication solid-state transmitter adopts DSP technology to carry out digital processing of radio frequency signals. In the meantime, power amplifier adopts field effect transistor for amplification and high power combination technology; and the power source adopts PS-FB-ZVS soft switch technology. With remote control interface and CAN bus interface, the whole unit boasts field-programmable function. Together with short wave digital receiver and short wave comprehensive digital business cell, it can be used to construct a fixed 20kW short wave communication system to accomplish reliable long-distance communication, work normally in harsh electromagnetic environment and strong interference conditions, automatically build chain circuit in rapid manner, carry out reliable data communication and provide short wave wireless data communication for data chain and other applications. Currently, the system is the only fixed short wave communication system with the highest power in China.
The system is mainly used for short wave fixed station, constructing stable and reliable short wave communication network, implementing long-distance anti-interference communication guarantee tasks and can be used by users of China for long-distance communication in various situations. When short wave communication comes across suppressing interference, the high power advantage of the system can be utilized to directly defend against interference so as to ensure smooth long and medium distance commanding communication. The system can be concurrently used as jamming equipment.
2. Main performance indexes
2.1 Main technical indexes of 20kW short wave transmitter
1) Frequency range: ;
2) Frequency interval: 10Hz;
3) Work categories: USB, LSB, ISB, AM and CW;
4) Channel memory: 1,000
5) Output power: 20kW±1dB;
6) Frequency stability: 1×10-8/d;
7) Relative audio-frequency intermodulation product: ≤-30dB;
8) Harmonic suppression: ≤-70dB;
9) Carrier suppression: ≤-60dB;
10) Sideband suppression: ≤-60dB;
11) Continuous working time: 72h.
2.2 Main technical indexes of short wave digital receiver
1) Frequency range: ;
2) Frequency interval: 1Hz;
3) Work categories: USB, LSB, ISB, AM and CW;
4) Frequency stability: 1×10-8/d;
5) Sensibility: ≤0.5μV SINAD=12dB;
6) Audio response: ≤2dB（300～3,000Hz）;
7) Total distortion factor: ≤2%;
8) Inverse mixture: ≥95dBV.
2.3 Functional indexes of short wave comprehensive digital business cell
1) New-type automatic communication function;
2) Digital encryption function;
3) 600bit/s low-speed voice coding function;
4) Fixed frequency data communication function;
5) Ultra low-speed anti-interference data transmission function;
6) Short messages in Chinese characters.
3. Components of equipment
1) 20kW short wave transmitter
2) Short wave digital receiver
3) Short wave comprehensive digital business cell
10kW Short Wave Communication System
1. Main purposes and characteristics
As a new generation of high power transmitter specially designed for base station, 10kW short wave communication solid-state transmitter adopts DSP technology to carry out digital processing of radio frequency signals. In the meantime, power amplifier adopts field effect transistor for amplification and high power combination technology; and the power source adopts PS-FB-ZVS soft switch technology. With remote control interface and CAN bus interface, the whole unit boasts field-programmable function. Together with short wave digital receiver and short wave comprehensive digital business cell, it can be used to construct a fixed 10kW short wave communication system to accomplish reliable long-distance communication, work normally in harsh electromagnetic environment and strong interference conditions, automatically build chain circuit in rapid manner, carry out reliable data communication and provide short wave wireless data communication for data chain and other applications. The key modules of the system can be used for 20kW short wave communication system developed by us.
The system is mainly used for short wave fixed station, constructing stable and reliable short wave communication network, implementing long-distance anti-interference communication guarantee tasks and can be used by users for long-distance communication in various situations. When short wave communication comes across suppressing interference, the high power advantage of the system can be utilized to directly defend against interference so as to ensure smooth long and medium distance commanding communication. The system can be concurrently used as jamming equipment.
2. Main performance indexes
2.1 Main technical indexes of 10kW short wave transmitter
1) Frequency range: ;
2) Frequency interval: 10Hz;
3) Work categories: USB, LSB, ISB, AM and CW;
4) Channel memory: 1,000
5) Output power: average power: 10kW±1dB;
6) Frequency stability: 1×10-8/d;
7) Relative audio-frequency intermodulation product: ≤-34dB;
8) Harmonic suppression: ≤-70dB;
9) Carrier suppression: ≤-60dB;
10) Sideband suppression: ≤-60dB;
11) Continuous working time: 72h.
2.2 Main technical indexes of short wave digital receiver
1) Frequency range: ;
2) Frequency interval: 1Hz;
3) Work categories: USB, LSB, ISB, AM and CW;
4) Frequency stability: 1×10-8/d;
5) Sensibility: ≤0.5μV SINAD=12dB;
6) Audio response: ≤2dB（300～3,000Hz）;
7) Total distortion factor: ≤2%;
8) Inverse mixture: ≥95dBV.
2.3 Functional indexes of short wave comprehensive digital business cell
1) New-type automatic communication function;
2) Digital encryption function;
3) 600bit/s low-speed voice coding function;
4) Fixed frequency data communication function;
5) Ultra low-speed anti-interference data transmission function;
6) Short messages in Chinese characters.
3. Components of equipment
1) 10kW short wave transmitter
2) Short wave digital receiver
3) Short wave comprehensive digital business cell |
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