( Brand: Kustom Electronics ), ( Manufacturer Part Number: 720B ), ( Part Type: Transponder ), ( Compatible Make: Avionics )
Review KUSTOM ELECTRONICS Transponder Test Set
The **Kustom 720B Transponder Set** represents a pinnacle of innovation in modern aviation communication, engineered to deliver unparalleled reliability, precision, and versatility for both military and commercial aircraft operations. Designed with cutting-edge technology, this transponder system integrates seamlessly into advanced avionics architectures, offering a robust solution for Mode S, Mode A/C, and Mode S Extended Squitter (ES) capabilities. The 720B excels in dynamic air traffic management by providing real-time, high-resolution data transmission, including precise altitude, identity, and position information, which is critical for maintaining safe and efficient flight paths in congested airspace. Its compact yet rugged construction ensures durability across a wide range of environmental conditions, from extreme temperatures to high-altitude operations, making it ideal for both fixed-wing and rotary-wing aircraft. The system s advanced digital signal processing enhances resistance to interference, ensuring clear and accurate communication even in challenging electromagnetic environments. Whether deployed in a modern fighter jet, a commercial airliner, or a specialized surveillance platform, the 720B transponder set elevates operational efficiency by enabling seamless integration with ground-based radar systems, secondary surveillance radars (SSR), and next-generation air traffic control infrastructures. Its modular design allows for easy upgrades and customization, accommodating evolving regulatory standards and technological advancements. For aviation professionals seeking a transponder that combines performance, adaptability, and dependability, the Kustom 720B stands as a benchmark in aviation communication technology.
The Kustom 720B Transponder Set is a popular choice among amateur radio operators, particularly those interested in satellite communication and linear transponder (linear transponder) operations. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.
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**Pros:**1. **Frequency Coverage and Flexibility**
The 720B covers a wide range of frequencies, including the 2-meter (144 148 MHz) and 70-cm (430 450 MHz) bands, which are essential for satellite communication, repeater use, and general VHF/UHF operations. This makes it versatile for various applications beyond just transponder use.
2. **High Power Output**
The 720B can deliver up to 100 watts of power output, which is sufficient for strong signals in satellite operations, long-distance repeater contacts, and other high-power applications. This is particularly useful for weak-signal modes or when operating in areas with marginal propagation.
3. **Durability and Build Quality**
Kustom radios are known for their robust construction, with metal chassis and high-quality components. The 720B is no exception, featuring a sturdy design that can withstand frequent use and harsh environments, such as mobile or portable setups.
4. **Compatibility with Accessories**
The 720B is compatible with a wide range of Kustom and third-party accessories, including speakers, microphones, and power supplies. This makes it easier to customize the radio to fit specific needs, such as adding a noise blanker or a speech processor.
5. **Good Signal Clarity and Performance**
The 720B is praised for its clear audio output and strong signal handling, even in noisy environments. This is crucial for satellite operations, where weak signals are common, and clarity is key to effective communication.
6. **Manual Tuning and Control**
Unlike some modern radios with overly complex menus, the 720B relies on manual tuning and straightforward controls. This can be an advantage for operators who prefer a more hands-on approach or who are less comfortable with digital interfaces.
7. **Community and Support**
The Kustom 720B has a dedicated user base, with extensive forums, tutorials, and community-driven resources available. This can be invaluable for troubleshooting, learning, and sharing tips with other operators.
8. **Cost-Effective for the Features Offered**
While not the cheapest radio on the market, the 720B offers a strong feature set at a reasonable price compared to some high-end alternatives. Its combination of power, durability, and performance makes it a cost-effective choice for serious hobbyists.
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**Cons:**1. **Outdated Interface**
The 720B lacks modern features such as digital displays, touchscreens, or built-in GPS. Its analog interface can be less intuitive for newer operators who are used to digital radios with menus and automated functions. This may require more manual adjustments and learning.
2. **Limited Digital Modes**
The 720B is primarily designed for analog voice communication and does not support modern digital modes like DMR, P25, or APRS. Operators interested in these modes would need to pair it with a separate digital radio or converter.
3. **No Built-in Memory Channels**
While the 720B has memory capabilities, it relies on manual programming of channels rather than automatic memory storage or recall. This can be cumbersome for operators who frequently switch between many frequencies or use repeaters with different offsets.
4. **Weight and Portability**
The 720B is a larger and heavier radio compared to some modern handheld or portable units. While its size contributes to its durability, it may not be as convenient for field operations or mobile setups where portability is a priority.
5. **Learning Curve for Satellite Operations**
While the 720B is excellent for satellite communication, operating on linear transponders requires additional knowledge of satellite orbits, Doppler shift compensation, and proper tuning techniques. Newer operators may need to invest time in learning these concepts before fully utilizing the radio s capabilities.
6. **Limited Software Support**
Unlike modern radios with software-defined radio (SDR) capabilities, the 720B does not integrate well with advanced software tools for signal analysis, decoding, or automation. This can limit its use in more technical or experimental applications.
7. **Potential for Wear and Tear**
Due to its manual controls and mechanical components, the 720B may be more prone to wear over time compared to fully digital radios. This could require occasional maintenance or adjustments to keep it functioning optimally.
8. **No Built-in Noise Reduction**
While the 720B handles noise well, it lacks advanced noise reduction features like adaptive noise cancellation or digital signal processing that some modern radios offer. This can be a drawback in extremely noisy environments.
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**Conclusion:**The Kustom 720B Transponder Set is a powerful and reliable radio that excels in analog voice communication, particularly for satellite operations and high-power VHF/UHF applications. Its durability, flexibility, and strong signal handling make it a favorite among experienced operators who prioritize performance and manual control. However, its outdated interface, lack of digital features, and limited portability may not appeal to everyone, especially those who prefer modern conveniences or are interested in digital modes.
The 720B is best suited for operators who:- Are comfortable with analog radios and manual tuning.
- Focus on satellite communication, linear transponders, or repeater use.
- Value durability and high power output.
- Are willing to invest time in learning satellite operations and radio techniques.
- Prefer a radio with a strong community and proven performance.
For operators who prioritize digital features, portability, or modern interfaces, alternatives such as the Yaesu FT-2900R, Icom IC-705, or Kenwood TM-D710 may be more suitable.
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**Recommendation:**If you are an experienced amateur radio operator with a strong interest in satellite communication, linear transponders, or high-power analog operations, the Kustom 720B is an excellent choice. Its combination of power, durability, and performance makes it a valuable addition to any station focused on these areas. However, if you are new to amateur radio, prefer digital modes, or prioritize portability and modern features, consider exploring other radios that better align with your needs. Always ensure that your operating license and local regulations allow for the frequencies and power levels you intend to use.
Details:
Missing top panel screws and bottom. Labeled Not Calibrated unit sold as is. Unit powers up. Condition unknown beyond powering up.
S/N: 317 Comes with power cable.
part #: 720b prices
- $3495.00-$4998.49
specifications comnavavioni:
- brand: Kustom Electronics
- mpn: 720b
- part type: Transponder
- compatible make: Avionics
offer comnavavioni:
- sold: 0
- availability: In Stock
- best offers: True
- options: Ship-to-home
- quantity: 1
- started: June 1, 2026
seller comnavavioni:
- rating: 100.0%
- # reviews: 77
- city: Lake Odessa, Michigan
returns comnavavioni:
- policy: No Returns
shipping comnavavioni:
- cost: $0.00
- carrier: USPS
- transit: 4-11 Days
- service: USPS Ground Advantage
- class: Standard
- type: Calculated
payments comnavavioni:
- credit card: Visa
- other
- wallet: Google-pay
general comnavavioni:
- condition: Used
- Aviation Parts Accessories > Avionics > NAV/COMs
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