Icom IC-7851 Review – Technical Details and More
The Icom IC-7851 is a high-end amateur radio transceiver designed for serious amateur radio enthusiasts who demand the best in performance and features. This radio is built with the latest technology and engineering, providing users with a superior level of performance and reliability.
Technical Specifications:
The Icom IC-7851 is a high-end amateur radio transceiver that is designed to deliver exceptional performance and versatility. Here are the technical specifications of the IC-7851:
Frequency range: The IC-7851 covers a frequency range of 0.030-60.000 MHz, with a general coverage receiver from 0.030-200.000 MHz.
Modes: The IC-7851 supports a wide range of modes, including SSB, CW, RTTY, AM, FM, and DV (digital voice). It also supports digital modes such as PSK31 and JT65.
Power output: The IC-7851 has a maximum power output of 200 watts on SSB, CW, FM, RTTY, and DV modes, and 50 watts on AM mode.
Dual receivers: The IC-7851 features two independent receivers that allow for simultaneous reception on two different frequencies.
Antenna tuner: The IC-7851 has a built-in automatic antenna tuner that can tune a wide range of antennas. The tuner can save tuning data for up to 10 different frequencies.
Display: The IC-7851 features a 7-inch color TFT LCD display with a resolution of 800 x 480 pixels.
Spectrum scope: The IC-7851 has a high-speed spectrum scope that can display up to ± 12.5 MHz in real time, and can be expanded to ± 31.25 MHz with an optional external software.
DSP filtering: The IC-7851 features advanced digital signal processing (DSP) filtering that allows for precise filtering of signals. The radio has a variety of filter options, including IF filter width and shape, and can be fine-tuned for optimal performance.
USB interface: The IC-7851 has a USB audio and CI-V interface that allows for easy connection to a computer for digital mode operation.
Dimensions: The IC-7851 measures 16.3 x 5.8 x 15.2 inches (W x H x D) and weighs approximately 37.5 pounds.
Power requirements: The IC-7851 requires 100-120 VAC or 200-240 VAC, 50/60 Hz, and consumes up to 750 watts during transmit.
Overall, the Icom IC-7851 is a high-performance amateur radio transceiver that is packed with features and delivers exceptional performance across a wide range of modes and frequencies. Its dual receivers, advanced DSP filtering, and built-in automatic antenna tuner make it a versatile choice for serious radio enthusiasts who demand the best in performance and functionality.
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Features:
The Icom IC-7851 is a high-end amateur radio transceiver that is designed for serious radio enthusiasts who demand the best in performance and features. Here are some of the many features that make the IC-7851 a top-of-the-line radio:
Dual receivers: The IC-7851 has two independent receivers that allow for simultaneous reception on two different frequencies. This is ideal for contesting, where operators need to monitor multiple frequencies at the same time.
High-speed spectrum scope: The IC-7851 has a high-speed spectrum scope that allows for quick and easy identification of signals. The scope can display up to ± 12.5 MHz in real time, and can be expanded to ± 31.25 MHz with an optional external software.
High-resolution display: The IC-7851 features a high-resolution 7-inch color TFT LCD display that provides clear and detailed information. The display can be customized to show the user’s preferred settings and information.
Built-in automatic antenna tuner: The IC-7851 has a built-in automatic antenna tuner that can tune a wide range of antennas. The tuner is quick and efficient, and can save tuning data for up to 10 different frequencies.
USB audio and CI-V interface: The IC-7851 has a USB audio and CI-V interface that allows for easy connection to a computer for digital mode operation. This makes it simple to interface with digital mode software and other accessories.
Intuitive user interface: The IC-7851 has an intuitive user interface that is easy to navigate and use. The menu system is straightforward and easy to understand, and the buttons and knobs are well-placed for convenient operation.
Advanced DSP filtering: The IC-7851 features advanced digital signal processing (DSP) filtering that allows for precise filtering of signals. The radio has a variety of filter options, including IF filter width and shape, and can be fine-tuned for optimal performance.
Compatible with a wide range of accessories: The IC-7851 is compatible with a wide range of accessories, including microphones, speakers, and amplifiers. This allows users to customize their radio setup to their specific needs.
Overall, the Icom IC-7851 is a feature-rich radio that delivers exceptional performance and versatility. Its dual receivers, high-speed spectrum scope, and advanced DSP filtering make it an ideal choice for serious radio enthusiasts who demand the best in performance and features. Its intuitive user interface and compatibility with a wide range of accessories make it a versatile choice for a variety of amateur radio applications.
Compatibility:
The Icom IC-7851 is compatible with a wide range of antennas and accessories. It can be easily connected to a computer for digital mode operation or data transfer. It is also compatible with Icom’s RS-BA1 software, which allows for remote control operation.
Price and Availability:
The Icom IC-7851 is a high-end radio and comes with a premium price tag. It is currently priced at around $12,000 USD and is available through authorized Icom dealers.
User Reviews:
The Icom IC-7851 has received high praise from users for its exceptional performance and features. Users have reported excellent receive and transmit quality, ease of use, and reliability. The only downside that some users have noted is the price, which may be prohibitive for some.
Pros and Cons:
Pros:
- Exceptional performance and features
- Built-in DSP for noise reduction and filtering
- Dual-watch and dual-receive capability
- Large color display with dual spectrum scope
- Built-in automatic antenna tuner
Cons:
- Premium price tag
- May not be accessible for all users
Troubleshooting and Maintenance:
The Icom IC-7851 is a high-end amateur radio transceiver designed for serious radio enthusiasts. While the radio is built with quality components and engineering, there may be occasions where troubleshooting and maintenance are necessary. Here are some tips for troubleshooting and maintaining the Icom IC-7851:
Troubleshooting:
- No power or no display: If the radio does not turn on, or the display is not working, check the power supply and connections. Make sure the power supply is providing the correct voltage, and that the connections are secure.
- Poor reception or transmission: If the radio is experiencing poor reception or transmission, check the antenna and coaxial cable connections. Ensure that the antenna is properly grounded and that the cable is not damaged or broken. Additionally, check the DSP settings to ensure that they are optimized for the current conditions.
- Audio issues: If there are issues with the audio, such as distortion or no sound, check the microphone and speaker connections. Ensure that the microphone is properly plugged in and that the volume is set to an appropriate level.
Maintenance:
- Cleaning: Regular cleaning of the radio is important to maintain its performance and longevity. Use a soft, dry cloth to wipe down the exterior of the radio, and use a soft brush to clean any dust or debris from the vents and openings.
- Firmware updates: Icom periodically releases firmware updates for the IC-7851 to improve its functionality and performance. Check the Icom website regularly for updates, and follow the instructions carefully to ensure a successful update.
- Calibration: Calibration of the radio should be performed periodically to ensure accurate operation. Use a quality frequency counter and power meter to calibrate the radio’s frequency and power output.
- Component replacement: If any components fail, it may be necessary to replace them. Contact an authorized Icom dealer for replacement parts and instructions on how to properly install them.
The Icom IC-7851 is a high-end amateur radio transceiver that requires minimal maintenance. Regular cleaning and calibration, along with firmware updates and component replacement when necessary, will help ensure the radio’s optimal performance and longevity. If troubleshooting is required, refer to the user manual or contact Icom customer support for assistance.
Common Questions and Answers:
Q: Is the Icom IC-7851 difficult to use?
A: While the Icom IC-7851 is a high-end radio, it is designed with ease of use in mind. The user interface is intuitive, and most functions are accessible with just a few button presses.
Q: Does the Icom IC-7851 require any special software to operate?
A: The Icom IC-7851 can be used standalone or with Icom’s RS-BA1 software for remote control operation. The software is available for download from Icom’s website.
Q: What accessories are compatible with the Icom IC-7851?
A: The Icom IC-7851 is compatible with a wide range of accessories, including microphones, antennas, and power supplies. Icom’s website provides a comprehensive list of compatible accessories.
Q: Can the Icom IC-7851 be used for digital mode operation?
A: Yes, the Icom IC-7851 can be easily connected to a computer for digital mode operation. The radio has a USB audio and CI-V interface, which makes it simple to interface with digital mode software.
Q: Does the Icom IC-7851 have a built-in antenna tuner?
A: Yes, the Icom IC-7851 has a built-in automatic antenna tuner that can tune a wide range of antennas.
Conclusion:
In conclusion, the Icom IC-7851 is a high-end radio that delivers exceptional performance and features for serious amateur radio enthusiasts. While it comes with a premium price tag, its quality components and engineering make it a worthwhile investment for those who demand the best in performance and reliability.
Its intuitive user interface and compatibility with a wide range of accessories make it a versatile choice for a variety of amateur radio applications. Overall, the Icom IC-7851 is an excellent choice for those who want a top-of-the-line amateur radio transceiver.
