Lisheng Digital Base and Mobile Station AP3500

These radio operators use designated frequency bands to exchange information, participate in emergency communications, and conduct technical experiments. The term “mobile” specifically refers to the use of amateur radio equipment in a vehicle or portable unit, allowing the operator to contact others from almost anywhere. On the main characteristics of mobile amateur radio is its emphasis on two-way communication, which distinguishes it from other forms of radio broadcasting

Description

General

Specification / Parameter Details
Frequency Range UHF 400-520MHz | VHF 136-174MHz
Channel Capacity 2000 Channels
Zone Capacity 64 Zones
Channel Spacing 25 / 20 / 12.5 KHz
Operating Voltage 13.6 V ±15%
Current Drain < 0.6A | < 2.0A | < 8A (50W)
Frequency Stability ±0.5ppm
Antenna Impedance 50Ω
Dimensions (H×W×D) 170mm x 170mm x 57mm
Weight 1.65kg
Front Case PC+ABS
LCD Display Color Display

Transmitter

Specification / Parameter Details
RF Power Output VHF High 50W, VHF Low 25W | UHF High 45W, UHF Low 25W
FM Modulation 11KΦF3E@12.5KHz | 14KΦF3E@20KHz | 16KΦF3E@25KHz
4FSK Digital Modulation 12.5KHz Data Only: 7K60FXD | 12.5kHz Data & Voice: 7K60FXW
Conducted/Radiated Emission -36dBm < 1GHz | -30dBm > 1GHz
Modulation Limiting ±2.5KHz@12.5KHz | ±4.0KHz@20KHz | ±5.0KHz@25KHz
FM Noise 40dB@12.5KHz | 43dB@20KHz | 45dB@25KHz
Adjacent Channel Power 60dB@12.5KHz | 70dB@20/25KHz
Audio Response +1 ~ -3 dB
Audio Distortion ≤3%
Digital Vocoder Type AMBE++ or SELP
Digital Protocol ETSI-TS102 361-1, 2&3

Receiver

Specification / Parameter Details
Sensitivity (Analog) 0.22μV (12dB SINAD) / 0.18μV (Typical) (12dB SINAD)
Sensitivity (Digital) 0.20μV / BER 5%
Selectivity (TIA-603 / ETSI) 60dB@12.5 KHz / 75dB@20&25KHz (TIA-603)
60dB@12.5KHz / 70dB@25KHz&20KHz (ETSI)
Intermodulation (TIA-603 / ETSI) 75dB@12.5/20/25KHz (TIA-603) | 70dB@12.5/20/25KHz (ETSI)
Spurious Response Rejection 75dB@12.5/20/25KHz (TIA-603) | 70dB@12.5/20/25KHz (ETSI)
S/N Ratio 40dB@12.5KHz | 43dB@20KHz | 45dB@25KHz
Rated Audio Power Output 3W
Rated Audio Distortion ≤3%
Audio Response +1 ~ -3 dB
Conducted Spurious Emission < -57 dBm

Environmental Specifications

Specification / Parameter Details
Operating Temperature -30℃ ~ +60℃
Storage Temperature -40℃ ~ +85℃
ESD IEC 61000-4-2 (Level 4) ±8kV (Contact) ±15kV (Air)
U.S. Military Standard MIL-STD-810 C/D/E/F/G
Dust & Water Intrusion IP54 Standard
Humidity Per MIL-STD-810 C/D/E/F/G Standard
Shock & Vibration Per MIL-STD-810 C/D/E/F/G Standard

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Radio Operators can engage in casual conversation, participate in competitions, or assist in emergencies, demonstrating a variety of activities within the scope of the hobby. The ability to communicate on the move enhances the flexibility and dynamic nature of amateur radio, making it an attractive option for individuals interested in radio technology and outdoor activities. In a mobile ham radio setup, operators typically use transceivers designed for use in vehicles or portable environments. These transceivers are equipped with the necessary controls and displays to operate while in motion and often come with an antenna can be mounted on a vehicle. In addition, operators can use handheld transceivers or portable antennas while performing mobile operations outside the vehicle, further expanding the potential of mobile communications. Mobile amateur radio operators are an integral part of emergency communications networks because they provide critical communications capabilities during natural disasters, civil emergencies, or other situations where traditional communications infrastructure may be compromised. The portability and self-sufficiency of mobile amateur radio equipment allows operators to quickly establish communications links in areas with limited or compromised infrastructure, making them a valuable asset when needed. Additionally, mobile amateur radio provides a sense of community and camaraderie among operators. Enthusiasts often join local radio clubs, attend ham festivals and conferences, and collaborate on projects to improve their broadcasting skills and knowledge. These social aspects of the hobby help form a supportive and vibrant community passionate about radio technology and its various applications. In summary, Mobile Amateur Radio is a dynamic and versatile radio communications platform that combines the excitement of mobile operations with the technical expertise of amateur radio. Whether having a casual conversation in a beautiful location, providing vital communications during an emergency, participating in an organized event, mobile amateur radio operators play a vital role in the world of amateur radio. As radio technology advances and the hobby continues to evolve, mobile ham radio remains a compelling avenue for radio enthusiasts to explore and enjoy.