The PMR-171 is an ultra-portable, all-band, all-mode SDR radio designed and manufactured by Chinese Guohetec. It covers a frequency range of 100 kHz to 2 GHz and supports a variety of digital modes, including FT8, USB, LSB, CW, AM, FM, RTTY, DMR (optional), and WFM (receive only).
The PMR-171 has dual VFO modes, which means that you can listen to two frequencies simultaneously. It also supports split-frequency operation, which allows you to transmit on one frequency while listening to another.
The PMR-171 has a number of other features that make it a versatile radio for a variety of applications. These features include:
- Intermediate frequency offset adjustment
- Fine tuning
- Noise suppression
- AGC speed selections
- RF gain and squelch controls
- Integral pre-attenuator processing
- Integrated AM/FM broadcast receivers
- Automatic sleep and transmit-time-out timers
- CAT and configuration cloning capabilities
The PMR-171 is powered by an externally attached modular 5AH battery-carrier. This battery-carrier can be augmented with dual battery backup to significantly extend battery-powered operation times. The PMR-171 also has a standardized external 9VDC-18VDC power input, making it compatible with a wide range of power sources.
The PMR-171 has a high-resolution LCD display with adjustable backlight brightness. This, combined with the user-selectable brightness level of the keypad, allows for clear and easy readability, even under bright sunlight.
The PMR-171 can be controlled wirelessly via Bluetooth using the QRadioBLE mobile app. This eliminates the need for wired connections and helps to prevent common-mode interference. The PMR-171 can also be connected to a computer using a USB cable, allowing it to be used with a wide range of standard amateur radio software.
The PMR-171 is a powerful and versatile SDR radio that is suitable for a variety of applications. It is a good choice for amateur radio operators, field radio enthusiasts, and anyone who wants a high-performance radio with a wide range of features.
Here are some of the optional add-on modules that are available for the PMR-171:
- Compass module: This module provides the radio with a built-in compass, which can be used for navigation.
- DMR module: This module allows the radio to communicate with other DMR radios.
- GPS module: This module provides the radio with a built-in GPS receiver, which can be used to track the radio’s location.
The PMR-171 is a great radio for a variety of applications. It is a good choice for amateur radio operators, field radio enthusiasts, and anyone who wants a high-performance radio with a wide range of features.
- Real-time spectrum.
- Waterfall chart.
- Doppler frequency tracking.
- Using software-defined radio technology (SDR), full-band support FT8, USB, LSB, CW, RTTY, AM, FM, DMR (optional), WFM (Receive Only).
- Dual frequency conversion circuit structure.
- The IF width and IF displacement hardware and software can be modified to provide powerful IF interference suppression.
- DSP digital noise reduction.
- Built-in (4~160) m high-speed automatic antenna tuner.
- Built-in electronic key controller, all parameters can be set flexibly.
- Built-in sound card with IQ and audio output.
- Microsoft Word – PMR-171-⁄(7K„V1.0.docx
- External battery compartment design.
- USB TYPEC3.1 to connect to the computer
- High-precision TXCO ± 0.5ppm (-10°C~60°C). 14. Ultra-wide working voltage range: 9~18VDC, some voltage transmission is limited
- Power supply anti-reverse polarity protection. 16. Built-in GPS/Beidou, electronic compass (acceleration, angle sensor) (optional).
- GPS timing (optional GPS module required). 18. The RTC clock can be set.
- Voltage display.
- Ultra-light weight: ≤2kg.
- Bluetooth wireless control, Bluetooth FT8.
PMR 171 Price and availability
This chinese transceiver can be purchased online on Aliexepress or other popular stores, for a price around 730 USD / 690 euros.
PMR 171 User Manual
Download the English version of the PMR-171 SDR Transceiver