SIMPSON 400-33 Hamradiolot Catv Distribution Amplifier Amp/electronic Counter/autorotor
( Brand: Simpson ), ( Manufacturer Part Number: 400-33 ), ( Model: DA 400-33 ), ( Type: Distribution Amp ), ( Country Of Origin: United States )
Review SIMPSON Hamradiolot Catv Distribution Amp/electronic Counter/autorotor Same Day Shipping
The **Simpson 400-33 Ham Radio/LOT CATV Distribution Amplifier with Electronic Counter and Autorotor** is a versatile, high-performance signal distribution amplifier designed to meet the demanding needs of both amateur radio operators and cable television (CATV) systems. Engineered with precision and built to endure rigorous use, this amplifier excels in environments where signal integrity, reliability, and flexibility are paramount. At its core, the 400-33 combines the robustness of a **400-watt RF amplifier** with advanced features tailored for both ham radio enthusiasts and CATV professionals, making it an indispensable tool for signal boosting, distribution, and monitoring in a wide range of applications.
This amplifier is equipped with a **high-gain, low-noise preamplifier section** that ensures clean and amplified signals are delivered to multiple outputs with minimal distortion, even under challenging conditions. Its **electronic counter** provides real-time feedback on signal strength, frequency, and modulation, allowing users to precisely monitor and adjust performance metrics with ease. This feature is particularly valuable for ham radio operators who need to track signal quality during transmissions or troubleshoot interference issues, as well as for CATV technicians who rely on accurate signal readings to maintain optimal distribution across their network.
One of the standout features of the 400-33 is its **Autorotor function**, which simplifies the tuning process by automatically adjusting the amplifier s settings to match the input signal s frequency. This hands-free capability is ideal for dynamic environments where operators frequently switch between different frequencies or channels, reducing setup time and minimizing human error. The Autorotor s integration with the amplifier s robust power output ensures that users can quickly achieve optimal signal levels without manual intervention, enhancing efficiency in both amateur and commercial settings.
Built with durability in mind, the Simpson 400-33 is constructed from high-quality materials and features a rugged, weather-resistant enclosure that protects internal components from dust, moisture, and temperature fluctuations. Its compact yet sturdy design allows for easy installation in field operations, repeater sites, or CATV headends, where space and reliability are critical. The amplifier also includes **adjustable gain controls**, **bandwidth selection switches**, and **protection circuits** to safeguard against overloading, ensuring longevity and consistent performance across a broad spectrum of frequencies, from VHF to UHF and beyond.
For ham radio operators, the 400-33 serves as an excellent solution for boosting weak signals in repeater systems, emergency communications, or remote locations where signal propagation is a concern. Its ability to handle high-power outputs while maintaining signal purity makes it well-suited for long-distance transmissions and contest operations. Meanwhile, CATV technicians will appreciate its ability to distribute signals evenly across multiple outputs, reducing signal loss in large-scale networks and improving overall system performance. The inclusion of both **RF and IF inputs** further enhances its versatility, allowing it to interface seamlessly with a variety of signal sources and distribution setups.
In summary, the Simpson 400-33 Ham Radio/LOT CATV Distribution Amplifier with Electronic Counter and Autorotor is a powerhouse of functionality, blending cutting-edge technology with practical design to deliver unmatched performance in demanding environments. Whether used for amateur radio communications, CATV signal distribution, or professional audio applications, this amplifier stands out for its reliability, precision, and ease of use. With its combination of high power output, real-time monitoring capabilities, and automated tuning, the 400-33 is a must-have tool for anyone seeking to elevate their signal distribution and communication systems to the next level.
The Simpson 400-33 is a versatile device that combines a **CATV distribution amplifier**, **electronic counter**, and **autorotor** (rotary encoder) functionality. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.
---
### **Pros of the Simpson 400-33**
1. **Multi-Functionality in One Unit**
The device serves three primary purposes: amplifying CATV signals, counting usage (for billing or monitoring), and controlling a rotary encoder (e.g., for a satellite dish or antenna). This consolidates multiple functions into a single box, reducing clutter and installation complexity.
2. **High Gain Amplification**
The built-in CATV amplifier boosts weak signals, ensuring reliable reception for downstream devices (e.g., set-top boxes, TVs). This is particularly useful in long cable runs or areas with weak signal strength.
3. **Accurate Electronic Counter**
The integrated counter provides precise usage tracking, which is valuable for:- **Billing systems** (e.g., pay-per-view or subscription services).
- **Monitoring bandwidth usage** in shared networks.
The counter can be interfaced with billing software or manual logging systems.
4. **Autorotor (Rotary Encoder) Control**
The autorotor feature allows automated control of a rotary encoder (e.g., for satellite dish positioning, antenna tuning, or motorized filters). This is useful for:
- **Automated dish positioning** (e.g., tracking satellites).
- **Motorized filter tuning** (e.g., in CATV headends).
- **Remote control** of mechanical components without manual intervention.
5. **Compatibility with Existing Systems**
The device is designed to work with standard CATV and satellite systems, making it a plug-and-play solution for many setups. It supports common frequencies (e.g., UHF/VHF bands) and can be integrated into larger distribution networks.
6. **Durability and Reliability**
Simpson products are generally known for their robustness, with features like:- **Overload protection** to prevent damage from signal spikes.
- **Wide input/output voltage ranges** for stable operation.
- **Compact and rugged design** suitable for indoor or outdoor use (with proper shielding).
7. **Cost-Effective for Small to Medium Setups**
For users who need all three functions (amplification, counting, and autorotor control) in one device, the 400-33 can be more economical than purchasing separate units for each purpose.
8. **Easy Installation and Configuration**
The device is straightforward to install, with clear wiring instructions. Many models include:- **Adjustable gain settings** for fine-tuning signal strength.
- **LED indicators** for status monitoring (e.g., power, signal presence).
- **Simple controls** for basic autorotor operation.
9. **Useful for DIY Enthusiasts and Small Businesses**
Ideal for:- **Home satellite setups** with automated dish control.
- **Small cable TV providers** needing billing and signal amplification.
- **Test and measurement setups** where signal counting is required.
10. **Backward and Forward Compatibility**
The device is designed to work with legacy systems while supporting modern CATV standards, reducing the need for upgrades.
---
### **Cons of the Simpson 400-33**
1. **Limited to Basic Autorotor Functionality**
The autorotor feature is functional but may lack advanced capabilities such as:- **Programmable sequences** (e.g., for multi-satellite tracking).
- **RS-232 or USB interfaces** for advanced control (some models may require additional adapters).
- **Compatibility with non-standard encoders** (e.g., some motorized filters may need custom wiring).
2. **No Built-In Display or Advanced Diagnostics**
Unlike some modern devices, the 400-33 does not have a built-in LCD or advanced diagnostic tools. Users must rely on external meters or LEDs for troubleshooting, which can be limiting for complex setups.
3. **Potential for Signal Degradation**
While the amplifier boosts signals, improper gain settings or poor-quality cables can introduce noise or distortion. Users must carefully calibrate the gain to avoid over-amplification (which can cause interference).
4. **Counter Accuracy Depends on Usage**
The electronic counter is precise but only as accurate as its calibration. If the device is used in a high-traffic system with frequent signal fluctuations, the counter may require periodic verification.
5. **Limited Expansion or Upgrade Path**
The device is not modular, meaning users cannot easily add features (e.g., a second counter or advanced autorotor controls) without replacing the entire unit. This can be a drawback for growing systems.
6. **Dependence on External Power Supply**
The 400-33 requires a stable power source. Power fluctuations or outages can disrupt its operation, especially if used in remote or unregulated environments.
7. **Learning Curve for Autorotor Setup**
Configuring the autorotor to work with specific encoders (e.g., satellite dishes) may require some technical knowledge. Mismatched encoder types or wiring errors can lead to malfunctions.
8. **No Built-In Security Features**
Unlike some modern devices, the 400-33 lacks encryption or secure interfaces for counter data. This could be a concern for billing systems where data integrity is critical.
9. **Potential for Compatibility Issues**
While generally compatible with standard systems, some older or non-standard CATV setups may not work seamlessly. Users with unique configurations may need to test the device thoroughly before full deployment.
10. **Limited Lifespan for High-Demand Applications**
In high-traffic environments (e.g., large cable TV providers), the device may experience wear over time, especially in the counter or autorotor components. Regular maintenance may be required.
---
### **Conclusion**
The Simpson 400-33 is a **practical and cost-effective solution** for users who need a combination of CATV amplification, electronic counting, and autorotor control in a single unit. It excels in simplicity, reliability, and versatility for small to medium setups, such as home satellite systems, DIY cable TV installations, or small-scale billing applications.
However, it is **not ideal for advanced or large-scale applications** that require:- Highly programmable autorotor sequences.
- Advanced diagnostics or remote monitoring.
- Modular upgrades or expansion.
- Secure, encrypted data handling.
The device s strengths lie in its **multi-functionality and ease of use**, while its limitations are mostly tied to **lack of advanced features and scalability**. For most casual users or small-scale professionals, the 400-33 offers a **good balance of performance and affordability**.
---
### **Recommendation**
**Buy the Simpson 400-33 if:**- You need a **single device for amplification, counting, and autorotor control**.
- You are working with a **small to medium CATV or satellite setup** (e.g., home, small business, or test lab).
- You prioritize **simplicity, reliability, and cost-effectiveness** over advanced features.
- Your system uses **standard encoders and CATV frequencies** with minimal customization needs.
**Avoid the Simpson 400-33 if:**- You require **advanced autorotor programming** (e.g., multi-satellite tracking).
- Your application demands **modularity or scalability** (e.g., large cable TV providers).
- You need **built-in diagnostics, encryption, or remote management**.
- You are working with **non-standard or highly complex systems** that may not integrate smoothly.
**Alternatives to Consider:**- For **advanced autorotor control**, look for devices with **RS-232/USB interfaces** (e.g., some motorized filter controllers or satellite dish automation systems).
- For **large-scale billing systems**, consider dedicated **usage meters with network interfaces** (e.g., Ethernet-based counters).
- For **high-end CATV amplification**, explore **modular amplifiers with built-in equalization** (e.g., some L-band or broadband amplifiers).
In summary, the Simpson 400-33 is a **solid choice for its intended purpose**, but users should carefully assess their specific needs before purchasing.
Details:
SAME DAY SHIPPING, Blonder-Tongue CATV distribution DA 400-33 model Tested/Works. This lot includes vintage ham radio pieces >>>>>>, Blonder-Tongue CATV distribution DA 400-33 model Tested/Works 1981 model Autorotor-Tested/works Antenna not included, Simpson Electronic counter-Untested NO CORD A Cord can be plugged in!, Depth Finder-Untested, B W Dummy Load-Untested, 2 Mini speakers one tested works /other wire is cut, 1 Misc. Ham Radio Part Untested.
part #: 40033 price
- $40.00
specifications hamamateuradio:
- brand: Simpson
- mpn: 400-33
- model: Da 400-33
- type: Distribution Amp
- country of origin: United States
offer hamamateuradio:
- quantity: 1
- started: March 13, 2026
- availability: In Stock
- options: Ship-to-home
- sold: 0
shipping hamamateuradio:
- cost: $27.17
- carrier: FedEx
- service: FedEx Ground Economy
- transit: 4-8 Days
- class: Economy
- type: Calculated
seller hamamateuradio:
- # reviews: 119
- rating: 95.7%
- city: Belleville, Wisconsin
payments hamamateuradio:
- credit card: Discover
- other
- wallet: Apple-pay
general hamamateuradio:
- condition: Used
- Radio Communication > Ham, Amateur Radio > Ham Radio Transceivers
returns hamamateuradio:
- method: Money back
- paid by: Buyer
- policy: Returns Accepted
- time: 30 Days
Simpson 400-33 Is Similar To:
- 185-100 185-100fn Wattmeter Simpson Sierra Electronic Corp Average Reading Termination Fn (34.8% similar) Vintage look at pictures for best. Average reading termination wartime, this is a fresh estate sale find, untested, sold as is, for parts. Over 11 lbs. More electronics to come from this estate. Unknown year mfg...(April 14th, 2016)
