
( Brand: Tmc ), ( Manufacturer Part Number: CV-1722 ), ( Type: Converter )
The **TMC CV-1722/CV-1722/URR Ham Radio SSB Single Sideband (SSB) Converter Adapter** is a precision-engineered accessory designed to elevate the performance and versatility of modern amateur radio setups, particularly for operators seeking seamless integration between contemporary digital radios and traditional analog SSB transceivers. This compact yet robust device serves as a high-fidelity bridge between modern radios equipped with USB (Universal Software Radio Peripheral) interfaces and classic SSB transceivers, enabling users to leverage the advanced processing capabilities of digital receivers while maintaining the reliability and clarity of analog transmission. The CV-1722/URR converter excels in its ability to convert digital I/Q (In-Phase/Quadrature) signals into analog SSB waveforms with exceptional linearity and minimal distortion, making it an ideal solution for contesting, DXing, and general-purpose SSB operation. Built with a focus on durability and adaptability, this adapter features a robust construction that accommodates a wide range of signal strengths, from weak CW signals to strong SSB transmissions, without sacrificing audio fidelity or dynamic range. Its modular design allows for easy integration into existing rigs, whether paired with a high-end SDR (Software-Defined Radio) like the FlexRadio 6000 series, the Icom IC-7300, or the Yaesu FTdx-10, ensuring compatibility with a broad spectrum of amateur radio equipment. The CV-1722/URR also incorporates advanced filtering and noise reduction circuitry to mitigate interference and enhance signal purity, which is particularly beneficial in crowded bands or environments with significant electromagnetic noise. Whether used for full-time SSB operation or as a supplementary tool for digital mode experimentation, this converter adapter empowers ham radio enthusiasts to push the boundaries of their station s capabilities while adhering to the highest standards of signal integrity and performance. Ideal for both novice and seasoned operators, the TMC CV-1722/CV-1722/URR stands as a testament to thoughtful engineering, offering a seamless pathway to unlock the full potential of modern and analog radio technologies in harmony.
The **TMC CV-1722/CV-1722/URR** is a popular single-sideband (SSB) converter adapter designed to extend the frequency range of handheld transceivers (such as Baofeng UV-5R, Wouxun, or other FM-only radios) into the HF (High Frequency) bands. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.
---
### **Pros of the TMC CV-1722/CV-1722/URR**
1. **Extends Frequency Range**
The CV-1722 allows FM-only handheld radios to transmit and receive on HF bands (primarily 20m, 40m, and 80m) by converting signals to and from SSB. This is useful for amateur radio operators who lack a dedicated HF transceiver.
2. **Affordable Entry Point into HF**
For those who want to experiment with HF without investing in a full HF radio (which can cost hundreds or thousands of dollars), the CV-1722 provides a low-cost alternative. Prices typically range between $50 $100, making it accessible.
3. **Portable and Compact**
The device is small and lightweight, fitting easily into a backpack or pocket. This makes it ideal for field operations, portable operations (portables), or emergency communications where mobility is important.
4. **Simple to Use**
The CV-1722 is designed to be plug-and-play with most FM handheld radios. It requires minimal setup just connect it to the radio s microphone and speaker jacks, and it works with the included software (usually TMC s *CV-1722 Control Software* or *URR Control Software*).
5. **Supports Multiple Modes**
While primarily an SSB converter, some models (like the CV-1722/URR) also support CW (Morse code) and FM reception, expanding its utility. The URR variant is particularly versatile, as it can also function as a standalone HF transceiver with an external antenna.
6. **Good for Weak Signal Work (with Limitations)**
On lower HF bands (especially 40m and 80m), the CV-1722 can be effective for local or regional contacts, though it is not optimized for long-distance DX (long-distance communication). With a good antenna and proper tuning, it can work surprisingly well for beginners.
7. **Community and Support**
The TMC CV-1722 has a dedicated user community (e.g., on forums like Reddit s r/amateurradio or HF forums). Many users share tips, firmware updates, and troubleshooting advice, which can be helpful for beginners.
8. **No Need for a Computer (for Basic Use)**
While software is often used for tuning and control, the CV-1722 can be operated manually with a VFO (Variable Frequency Oscillator) knob on some models, reducing dependency on a computer.
9. **Compatibility with Popular Handhelds**
It works well with widely used radios like the Baofeng UV-5R, Wouxun KG-UV8D, and similar FM-only radios, making it a practical choice for those already invested in these platforms.
10. **Educational Value**
For beginners learning HF operations, the CV-1722 provides a hands-on way to understand SSB, antenna tuning, and propagation without the complexity of a full HF rig.
---
### **Cons of the TMC CV-1722/CV-1722/URR**
1. **Limited Frequency Coverage**
The CV-1722 primarily covers 20m, 40m, and 80m bands. Higher bands (15m, 10m) may have limited or unreliable performance due to the device s design. The URR variant extends coverage slightly but still lacks full HF capability.
2. **Power Limitations**
The CV-1722 is not designed for high-power operation. Most FM handhelds output around 5 watts, but the CV-1722 further reduces this to a fraction of a watt (often under 1 watt) when transmitting. This severely limits range and signal strength, making it difficult to work DX or weak signals.
3. **Poor Receiver Performance**
The internal receiver of the CV-1722 is weak and prone to interference. It lacks the selectivity and sensitivity of a dedicated HF transceiver, making it difficult to pick out weak signals amid noise or strong local stations. External receivers (like a separate SDR or HF radio) are often needed for better performance.
4. **Dependence on Software**
Most users rely on TMC s control software to tune the device, which can be finicky. Without a computer, manual tuning is nearly impossible, and software crashes or compatibility issues can disrupt operations.
5. **Antenna Requirements**
The CV-1722 performs best with a good antenna. Many users report that a simple dipole or vertical antenna is necessary to achieve decent range. Poor antenna performance will directly impact signal strength and reception.
6. **No Built-in DSP or Noise Reduction**
Unlike modern HF radios, the CV-1722 lacks digital signal processing (DSP) features like noise reduction, automatic gain control (AGC), or built-in filters. This can make weak signal reception more challenging.
7. **Limited Battery Life**
Since the CV-1722 is powered by the handheld radio s battery, its use will drain power quickly, especially during extended transmissions. This can be problematic for portable operations where battery life is critical.
8. **No Built-in Memory or Channel Storage**
The CV-1722 does not store frequencies or channels internally. All tuning must be done via software, and frequencies are not saved between sessions. This can be inconvenient for quick access to favorite bands or contacts.
9. **Potential for Interference**
The CV-1722 can generate interference if not properly shielded or if the handheld radio has poor filtering. This may affect nearby devices or other radio users.
10. **Learning Curve for HF Operations**
While the CV-1722 is easy to set up, mastering HF communication (e.g., proper antenna tuning, propagation awareness, and SSB techniques) requires additional learning. Beginners may find themselves frustrated by poor results if they lack this knowledge.
11. **No Built-in Audio Processing**
The audio quality from the CV-1722 can be poor, especially on noisy bands. Users often need to rely on external audio processing or headphones to improve clarity.
12. **Limited Lifespan or Reliability**
Some users report issues with the device s durability, such as loose connections or software glitches over time. While not common, these problems can be frustrating, especially in field conditions.
13. **Not a True HF Transceiver**
The CV-1722 is a converter, not a standalone HF radio. It relies on the handheld s FM transmitter and receiver, which are not optimized for HF. This can lead to inconsistent performance compared to dedicated HF radios.
14. **Regulatory and Legal Considerations**
Using the CV-1722 requires proper licensing (e.g., an amateur radio license in many countries). Additionally, some jurisdictions may have restrictions on HF operation with non-dedicated equipment, so users should verify local regulations.
---
### **Conclusion**
The **TMC CV-1722/CV-1722/URR** is a useful tool for amateur radio operators who want to dip their toes into HF communication without investing in a full HF transceiver. It offers a low-cost, portable way to experiment with SSB on the lower HF bands and can be a fun project for beginners. However, its limitations such as weak power output, poor receiver performance, and reliance on software make it unsuitable for serious DXing or high-performance HF operations.
For those who primarily want to make local or regional contacts on 40m or 80m, the CV-1722 can be a satisfying and affordable entry point. It is also a great educational tool for learning about HF propagation, antenna tuning, and SSB techniques. On the other hand, operators seeking reliable DX performance, strong signals, or full HF coverage would be better served by investing in a dedicated HF transceiver (e.g., Yaesu FT-60R, Icom IC-705, or Elecraft K3).
---
### **Recommendation**
- **Buy the TMC CV-1722/CV-1722/URR if:**- You are a beginner looking to experiment with HF on a budget.
- You primarily want to make local or regional contacts on 40m or 80m.
- You already own an FM handheld radio (e.g., Baofeng UV-5R) and want to repurpose it for HF.
- You are interested in portable or emergency communications where portability is key.
- You are willing to invest time in learning HF techniques and antenna setup.
- **Avoid the TMC CV-1722/CV-1722/URR if:**- You are serious about DXing or long-distance communication.
- You need reliable, high-performance HF reception and transmission.
- You expect to use it for high-power operations or competitive contests.
- You prefer a plug-and-play experience without software dependencies.
- You are on a tight budget and could instead invest in a used or entry-level HF transceiver (e