GUOHETEC PRM-171 Ham Radio Transceiver Dmr Compass Gps

( Brand: Guohetec ), ( Manufacturer Part Number: PRM-171 ), ( Compatiblebrand: Universal ), ( Type: Transceiver )

Review GUOHETEC Ham Radio Transceiver Dmr Compass Gps Excellent

The **Guohetec PRM-171** is a versatile and feature-packed **DMR (Digital Mobile Radio) handheld transceiver** designed for enthusiasts, emergency communicators, and outdoor adventurers seeking reliable, long-range connectivity in both urban and remote environments. Engineered with a robust **dual-band capability**, this compact yet powerful device operates seamlessly across **UHF (400 480 MHz)** and **VHF (136 174 MHz)**, ensuring compatibility with a wide range of DMR repeaters, talkgroups, and analog FM channels. Its **DMR Tier II** functionality allows users to engage in digital voice communication with crystal-clear audio quality, while the integrated **analog FM mode** provides a fallback option for traditional radio users. The PRM-171 stands out with its **built-in DMR compass and GPS module**, offering precise navigation tools for hikers, hunters, and emergency responders who require real-time positioning and directional guidance without relying on external devices. The **large 2.4-inch color display** delivers intuitive menus, signal strength indicators, and customizable settings, enhancing usability in various conditions, while the **backlit keypad** ensures easy operation in low-light scenarios. With a **high-power output of up to 5 watts (adjustable)**, the PRM-171 excels in extending communication range, making it ideal for long-distance conversations or coverage in challenging terrains. Its **durable construction**, including a **water-resistant design (IP54 rating)** and **shock-resistant housing**, ensures reliability in rugged environments, while the **long-lasting lithium-ion battery (1,800 mAh)** provides extended operational time up to **10 15 hours of talk time** on a single charge, depending on usage. Additionally, the transceiver supports **multiple DMR networks**, including **Brandmeister, DMR , and local repeaters**, along with **voice encryption (optional)** for enhanced security. Whether used for **hobbyist communication, emergency preparedness, or outdoor exploration**, the Guohetec PRM-171 combines cutting-edge digital technology with practical navigation features, making it a standout choice for those who demand performance, versatility, and reliability in their handheld radio.

The **Guohetec PRM-171** is a dual-band DMR (Digital Mobile Radio) transceiver that integrates GPS and a compass, making it a versatile option for amateur radio operators, emergency communicators, and outdoor enthusiasts. Below is a detailed analysis of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of the Guohetec PRM-171**

1. **Dual-Band Capability**

The PRM-171 supports both **2m (VHF) and 70cm (UHF)** bands, allowing for wider coverage and flexibility in communication. This is particularly useful in areas where one band may have better propagation or fewer users.

2. **DMR Mode Support**

It is fully compatible with **DMR (Digital Mobile Radio)**, a popular digital voice protocol used by many repeaters and networks worldwide. This includes support for **DMR Tier II**, which is widely adopted in amateur radio and public service communities. The unit also supports **DMR Tier I** (analog fallback) and **DMR Tier III** (digital-only).

3. **GPS and Compass Integration**

- **Emergency communications** (e.g., locating users in remote or disaster-stricken areas).

- **Outdoor activities** (e.g., hiking, survival scenarios, or search-and-rescue operations).

- **Mobile operations** (e.g., tracking vehicle movements or positioning repeaters).

The GPS data can also be useful for logging QSOs (contacts) with precise timestamps and coordinates.

4. **Large Color Display**

The **5-inch color LCD screen** is clear and easy to read, even in bright sunlight. It displays maps, GPS coordinates, signal strength, and other essential information in a user-friendly format.

5. **Built-in Battery and Power Options**

The PRM-171 includes a **removable 1800mAh lithium-ion battery**, allowing for portable operation without needing an external power source. It also supports **USB charging** and can be powered via **12V DC** (e.g., car cigarette lighter), making it versatile for mobile use.

6. **Multiple Communication Modes**

- **FM (analog voice)** for compatibility with traditional repeaters.

- **D-STAR** (via optional firmware upgrades or external interfaces, though native support is limited).

- **APCO P25** (for public safety applications, though this may require additional configuration).

This flexibility ensures compatibility with a broad range of networks and users.

7. **Voice and Data Features**

- **Voice encoding**: Supports **AMBE ** (Advanced Mobile Band Excitation) for high-quality digital voice.

- **Data capabilities**: Can transmit **GPS coordinates, APRS (Automatic Packet Reporting System) data**, and other digital messages.

- **DTMF (Dual-Tone Multi-Frequency)**: Useful for controlling repeaters or sending simple commands.

8. **Durable and Portable Design**

The unit is **ruggedly built** with a **water-resistant** (IP54 rating) and **shock-resistant** design, making it suitable for outdoor use. Its compact size (approximately **16.5 x 10 x 3 cm**) and lightweight construction (around **400g**) enhance portability.

9. **Easy-to-Use Interface**

The **touchscreen interface** is intuitive, with **one-touch access to common functions** (e.g., GPS tracking, repeater scanning, and menu navigation). The radio also includes a **microphone with a built-in speaker**, though external headsets can be connected for better audio quality.

10. **Affordable Price**

Compared to other DMR radios with GPS and compass features (e.g., some Baofeng or TYT models with add-ons), the PRM-171 offers a **cost-effective solution** for those needing digital communication and location tracking.

11. **Localization for Chinese Market**

- **Localized firmware and language support**.

- **Access to Chinese DMR networks** (e.g., **China DMR Network** or regional repeaters).

- **Potential availability of spare parts or support**.

12. **APRS and Tracking Features**

The PRM-171 can transmit **APRS (Automatic Packet Reporting System) data**, allowing users to share their location in real-time via the APRS-IS network. This is valuable for:

- **Public safety and emergency coordination**.

- **Hobbyist tracking** (e.g., vehicle tracking, bike rides, or hiking trips).

- **Networking with other APRS users** globally.

13. **Software Updates and Community Support**

Guohetec (or its parent company) may provide **firmware updates** to add new features or improve functionality. While the radio is not as widely supported as some Western brands (e.g., Yaesu or Icom), the **DMR community** is active, and users can find help through forums like **DMR ** or **Reddit**.

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### **Cons of the Guohetec PRM-171**

1. **Limited Brand Recognition**

- **Fewer user manuals or tutorials** in English (though some are available online).

- **Harder to find replacement parts** outside China or Asia.

- **Less community support** compared to more established brands.

2. **English Support May Be Incomplete**

While the radio has an English language option, some **menu items, error messages, or advanced features** may only be fully supported in Chinese. This could be frustrating for users who rely heavily on English documentation.

3. **Firmware Limitations**

- The radio may **lack native support for all DMR networks** (e.g., some regional or private networks may require manual configuration).

- **No official D-STAR support** (though some users report partial compatibility via third-party firmware).

- **No built-in APRS encoding** (users must manually input coordinates or use external software).

4. **Battery Life Concerns**

While the **1800mAh battery** is decent for a handheld radio, real-world usage (especially with GPS active) may reduce battery life significantly. Users should expect:

- **Limited talk time** (likely **4-8 hours** of continuous use, depending on settings).

- **GPS tracking draining power quickly**, so users may need to carry spares or a portable charger.

5. **No Built-in FM Transmit on 70cm**

Some DMR radios (e.g., Baofeng UV-5R) can transmit FM on both bands, but the PRM-171 **only transmits DMR on 70cm**. This limits its use for analog FM repeaters on that band.

6. **No Built-in PA (Power Amplifier) for Mobile Use**

The PRM-171 is designed primarily as a **handheld radio**, not a mobile unit. If used in a vehicle, users may need an **external amplifier** for better range, which adds complexity and cost.

7. **No Native Support for Some Digital Modes**

- **NXDN** (another digital mode used in some regions).

- **P25 Phase I/II** (requires additional configuration).

- **C4FM (DCS)** (used in some Japanese and Korean networks).

Users interested in these modes may need to explore third-party solutions.

8. **Potential Quality Control Issues**

- **Occasional firmware bugs** (e.g., GPS freezing, display artifacts).

- **Mixed reviews on build quality** (e.g., loose buttons, minor plastic wear).

- **Limited after-sales service** outside China, which could be a concern for warranty claims.

9. **No Built-in Noise Blanker or Automatic Gain Control (AGC) Tuning**

Some higher-end radios offer **adjustable noise reduction**, but the PRM-171 has **fixed settings**, which may not be optimal in all environments (e.g., noisy urban areas or weak signals).

10. **No Native Support for Voice Recording**

Unlike some radios (e.g., Icom IC-V80), the PRM-171 **does not record voice messages** natively. This limits its utility for logging QSOs or creating voice logs.

11. **Limited Accessory Ecosystem**

- **Few third-party accessories** (e.g., no widely available external antennas, speakers, or microphones).

- **No official programming software** (users must rely on **DMR or third-party tools** for configuration).

- **No Bluetooth or Wi-Fi connectivity** for easy pairing with smartphones or computers.

12. **Potential Language Barriers in Documentation**

While the radio itself can be used in English, **user manuals, troubleshooting guides, and technical support** may primarily be in Chinese. This could make setup or repairs more difficult for non-Chinese speakers.

1

Details:

You can take a look at the pictures of back box for all technical specs. The bottom line is this. This PMR-171 transceiver is in fantastic condition with no cosmetic wear. That includes manuals, packaging, power cords, etc.

Its fully loaded with DMR, GPS, and compass. Its been tested and works flawlessly with full power out great RX. If you do not see it in the photos, is likely included sale. This configuration retails for $1300 if bought directly from the manufacturer, so this is a great chance to save few bucks.

This is a US version ITU2.

specifications hamamateuradio:

• brand: Guohetec
• mpn: Prm-171
• compatiblebrand: Universal
• type: Transceiver

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• paid by: Seller
• time: 30 Days
• policy: Returns Accepted
• method: Money back

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• # reviews: 28150
• rating: 100.0%
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general hamamateuradio:

• Radio Communication > Ham, Amateur Radio > Ham Radio Transceivers
• condition: Used

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• type: Fixed
• class: Standard
• cost: $50.00
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• transit: 3-10 Days

offer hamamateuradio:

• started: February 11, 2026
• quantity: 1
• availability: In Stock
• sold: 0
• options: Ship-to-home