What is DroidProp?

DroidProp is designed to provide accurate HF propagation predictions for frequencies ranging from 3 MHz to 30 MHz. Whether you’re an experienced DX chaser or just getting into HF bands, this app helps determine the best frequencies and times to reach your target locations with the best signal strength.

Key Features

VOACAP-Powered Predictions – Uses one of the most trusted HF propagation models to provide reliable forecasts.

No Internet Required – All calculations are performed on your device, making it ideal for portable or off-grid operations.

Sunspot Number Updates – Fetches the latest sunspot data automatically for accurate propagation modeling.

Current Location Support – Uses GPS to set your QTH for real-time predictions.

DXCC Locator Fixes – Provides precise longitude and latitude calculations for DXCC entities.

Small Storage Footprint – Requires only 9MB of internal storage after installation, with minimal storage used per prediction.

Why Should Hams Use DroidProp?

As any seasoned HF operator knows, solar activity, geomagnetic conditions, and time of day all impact propagation. DroidProp helps you take these factors into account, allowing you to:

Plan your QSOs – Find the best time and band to reach your desired DX location.

Improve contest performance – Optimize your operating strategy based on real propagation conditions.

Enhance emergency communications – When the internet is down, DroidProp helps predict which HF bands will be open for critical communications.

Getting Started

1. Download and Install – DroidProp is available on Google Play Store.
2. Configure Your QTH – Set your location manually or use GPS for real-time data.
3. Input Destination – Choose your target DX station or region.
4. Analyze Predictions – Check the results and start calling CQ!

Final Thoughts

DroidProp is a must-have tool for any serious HF operator looking to enhance their station’s performance. With VOACAP’s proven reliability and the convenience of mobile access, it provides crucial propagation insights right when you need them. Whether you’re operating portable, mobile, or from your home shack, DroidProp helps you make the most of every HF contact.

Download DroidProp today and take your HF communications to the next level!

The post HF Propagation Predictions with DroidProp appeared on Hamradio.my - Amateur Radio, Tech Insights and Product Reviews by 9M2PJU.

In the ever-evolving world of radio and communications, compact yet powerful gadgets always generate excitement. One device that has been catching attention is the Mini Spy Radio SI4732. This tiny but feature-packed receiver has been praised for its performance, versatility, and portability.

Unboxing & First Impressions

A recent YouTube video titled Mini Spy Radio SI4732 – My Best Gadget of 2025 showcases this intriguing device. Right out of the box, the Mini Spy Radio SI4732 impresses with its compact and lightweight design, making it an ideal companion for radio enthusiasts, travelers, and emergency preparedness kits.

The build quality appears solid despite its small size, and it comes with a small but efficient antenna. Despite its diminutive form factor, it delivers impressive reception across multiple bands.

Specifications

• Main Control: ESP-32-S3
• Reception Bands: HF, SW, MW, VHF
• Screen: 1.9 inch IPS, 170*320 resolution
• Charging Port: TYPE-C (No quick charging)
• Audio Jack: 3.5mm three-segment stereo
• Battery Capacity: 800mAh
• Body Size: 7.3 x 3.2 x 1.2 cm
• Body Weight: 54g

Features & Performance

One of the standout features of the Mini Spy Radio SI4732 is its wideband reception. It covers AM, FM, shortwave (SW), and single sideband (SSB) modes, making it a versatile tool for both casual listeners and serious radio operators. The SI4732 chip inside provides excellent signal processing, allowing for clear audio and good selectivity even in crowded bands.

Other key features include:

• Digital tuning and display – Ensures precise frequency selection.
• Rechargeable battery – Offers long-lasting operation.
• Built-in speaker and headphone jack – For flexible listening options.
• SSB support – Essential for amateur radio operators and shortwave listening enthusiasts.
• Compact design – Small enough to fit in your pocket or backpack.

The YouTube video demonstrates the radio’s ability to pick up distant stations with minimal interference. The SSB mode appears to work well for listening to ham radio conversations, maritime broadcasts, and other long-distance communications.

Why This Radio Stands Out

Many radio enthusiasts have tested various receivers over the years, but the Mini Spy Radio SI4732 stands out due to its combination of size, performance, and affordability. It’s perfect for emergency situations, outdoor adventures, and everyday use. Whether monitoring local broadcasts or exploring international signals, this little gadget delivers.

Final Thoughts

If you’re a radio enthusiast looking for a compact yet capable receiver, the Mini Spy Radio SI4732 is worth considering. It has gained popularity as one of the most talked-about gadgets of the year, and many users highly recommend it.

Buy here

Check out the full review on YouTube: Mini Spy Radio SI4732 – My Best Gadget of 2025 and let us know your thoughts! Have you used this radio before? Share your experiences in the comments below!

Stay tuned for more radio reviews and discoveries!

The post Mini Spy Radio SI4732: The Best Gadget of 2025? appeared on Hamradio.my - Amateur Radio, Tech Insights and Product Reviews by 9M2PJU.

For radio enthusiasts, shortwave listeners, and amateur radio operators, having a reliable and feature-rich Software-Defined Radio (SDR) receiver is essential. The Raddy Malahit DSP2 is an advanced full-band, multi-mode receiver designed for seamless signal reception across a vast frequency range from 10kHz to 2GHz. With its powerful DSP technology, built-in CW decoder, and modern IPS touchscreen, this compact device offers exceptional performance for both casual and serious radio hobbyists.

Unmatched Frequency Coverage & Mode Support

The DSP2 provides comprehensive support for multiple modes, making it a versatile tool for exploring different parts of the radio spectrum. Whether you’re tuning into broadcast FM stations, listening to amateur radio transmissions, or decoding digital signals, the DSP2 ensures flawless reception in:

NFM (Narrowband FM)
WFM (Wideband FM)
AM (Amplitude Modulation)
SSB (Single Sideband – USB/LSB)
DSB (Double Sideband)
CW (Continuous Wave – Morse Code)
RTTY (Radioteletype)
FT8 (Weak Signal Digital Mode)

Cutting-Edge Display & User-Friendly Interface

Navigating and operating the DSP2 is effortless, thanks to its 3.5-inch IPS color touchscreen. The responsive waterfall and spectrum display allow users to visualize signals in real-time, making tuning and signal tracking much easier. Additionally, physical knobs provide fine control over frequency and volume, ensuring a smooth user experience.

3.5″ Touchscreen: Displays waterfall & spectrum patterns
Touch & Knob Control: Allows precise tuning and adjustments
User-Friendly Interface: Intuitive layout for easy operation

Exceptional Signal Clarity with Advanced SDR Technology

Built on a high-sensitivity SDR structure, the DSP2 is engineered for clear and crisp reception, even in challenging signal environments. It integrates advanced digital signal processing (DSP) techniques to filter, amplify, and process signals with impressive precision.

Built-in CW Decoder – Automatically deciphers Morse code transmissions
Adaptive Noise Reduction (NR) – Reduces background noise for better clarity
Threshold Noise Reduction – Enhances weak signal readability
Noise Blanker (NB) – Eliminates impulsive noise for smoother reception
Automatic Gain Control (AGC) – Adjusts signal strength dynamically
Automatic Notch Filter (ANF) – Suppresses unwanted interference

Long-Lasting Battery & Portability

The DSP2 is powered by a 5000mAh lithium-ion battery, providing extended operating time for long listening sessions. The Type-C fast charging capability ensures quick recharges, making it perfect for field use or portable operations.

5000mAh Battery: Extended operation without frequent recharging
USB Type-C Charging: Fast and convenient power replenishment
Compact & Durable: Sturdy aluminum alloy construction with IP6X-rated mechanical encoders

Premium Features for Enhanced Listening

The DSP2 is designed for flexibility and enhanced user experience, offering additional features that set it apart from standard SDR receivers:

Adjustable Filter Width – Fine-tune filters for optimal signal isolation
Stereo FM with RDS Support – Enjoy clear FM radio with station info
Simulated Stereo & Equalizer – Customize audio settings for better sound quality
High Impedance Mode – Enables superior antenna compatibility
Bias Tee Power – Supports external active antennas for improved reception
Built-in Pre-Amplifier – Enhances weak signals for better performance
Front Cavity Dual-Diaphragm Speakers – Delivers clear, high-quality audio

Technical Specifications

Frequency Range: 10kHz-380MHz, 404MHz-2GHz
Panorama Width: 192kHz, 96kHz, 48kHz
Sensitivity: 0.3µV up to 1GHz
Dynamic Bandwidth: 82dB
Antenna Connector: 50Ω SMA Female
Screen: 3.5″ IPS Color Touchscreen
Hardware Version: 2.4

What’s Included in the Box?

When you purchase the Raddy Malahit DSP2, you receive a complete package that includes:

1 x Raddy Malahit DSP2 Radio
1 x Antenna
1 x Stand
1 x Lanyard
1 x Type-C Charging Cable
2 x Spare Knobs
1 x EVA Carrying Bag
1 x 3M Transparent Foot Pad
1 x User Manual

Final Thoughts: Is the Raddy Malahit DSP2 Worth It?

The Raddy Malahit DSP2 is a powerful, compact, and versatile SDR receiver that delivers exceptional performance across a broad frequency range. Whether you’re a radio hobbyist, amateur operator, shortwave listener, or digital mode enthusiast, this device offers advanced features, superb signal clarity, and long battery life.

With its modern touchscreen display, built-in decoding capabilities, and extensive mode support, the DSP2 is a top-tier choice for those seeking a high-performance portable SDR receiver.

Ready to explore the airwaves? The Raddy Malahit DSP2 is your perfect companion!

Visit https://radioddity.refr.cc/

The post Discover the Raddy Malahit DSP2 SDR: A Feature-Rich Software-Defined Radio appeared on Hamradio.my - Amateur Radio, Tech Insights and Product Reviews by 9M2PJU.

What is Receiverbook?

Receiverbook is a centralized directory that provides a list of publicly accessible SDR receivers worldwide. It allows users to remotely tune in to various radio frequencies without needing specialized hardware at home. The platform serves as a valuable resource for anyone interested in radio, from casual listeners to serious radio experimenters.

Features and Usability

Receiverbook simplifies the process of finding and accessing remote SDRs by offering:

• Global Coverage – A wide range of SDR receivers from different locations worldwide.
• Categorized Listings – Organized by frequency range, receiver type, and geographical location.
• Direct Links – Easy access to various web-based SDRs, including KiwiSDR, OpenWebRX, and WebSDR.
• Search and Filter Options – Allows users to quickly locate receivers that fit their listening needs.

Why Shortwave Listeners and Radio Enthusiasts Should Use Receiverbook

For shortwave listeners, Receiverbook provides an incredible opportunity to explore global radio signals. Some key benefits include:

• Access to Distant Signals – Listen to shortwave broadcasts from different parts of the world, even if propagation conditions are unfavorable in your local area.
• Comparing Signal Strength – Check how signals from various broadcasters propagate across different regions.
• Discovering New Stations – Explore lesser-known radio stations that may not be accessible with a personal receiver.

How Amateur Radio Operators Can Benefit

Amateur radio operators (hams) can also take advantage of Receiverbook for several practical applications:

• Monitor Propagation Conditions – Use remote SDRs to evaluate band openings and propagation paths before making transmissions.
• Check Transmission Quality – Hams can listen to their own signals from different locations to assess modulation, power, and antenna effectiveness.
• DX Monitoring – Track distant amateur radio operators, contest stations, or beacons to improve DXing strategies.
• Experimentation – Test digital modes, receive weak signal communications, or even experiment with software-based decoding from remote locations.

Conclusion

Receiverbook is an invaluable tool for anyone passionate about radio. Whether you are a shortwave listener exploring distant broadcasts, a radio enthusiast experimenting with digital modes, or an amateur radio operator fine-tuning your setup, this directory opens the door to a vast world of remote listening possibilities. By leveraging the power of publicly accessible SDRs, you can expand your listening experience beyond the limitations of your own equipment and environment.

For those looking to enhance their radio journey, Receiverbook is a must-explore resource that connects listeners to the world of radio like never before.

Visit https://www.receiverbook.de/

The post Exploring Receiverbook: A Powerful Tool for Shortwave Listeners, Radio Enthusiasts, and Amateur Operators appeared on Hamradio.my - Amateur Radio, Tech Insights and Product Reviews by 9M2PJU.

Key Features

• 0.96″ OLED Display – Enjoy clear visuals of frequency bands, AGC settings, and more at a glance.
• Auto-Hold Settings – Retains your settings even after power failure, ensuring a seamless experience.
• Internal 3.6V 800mAh Lithium Battery – Provides stable and long-lasting power with USB recharging support.
• Superior Audio Output – Supports both 3.5mm earphones and built-in 8-ohm 1.5W speaker for excellent sound clarity.
• High-Quality Antenna Interface – Uses SMA interface, making it easy to upgrade or modify the setup.
• Extensive Band Coverage – Pre-configured with 22 commercial and ham radio bands, including FM, AM (MW & SW), and SSB (LSB & USB).
• Customizable Audio Bandwidth Filters – Select from 0.5, 1, 1.2, 2.2, 3, and 4 kHz for the best listening experience.
• Precise Frequency Control – Adjustable BFO control and frequency step options of 1, 5, and 10 kHz.

Technical Specifications

• Material: High-quality printed circuit board (PCB)
• Dimensions: 89 × 107 × 41 mm (3.50 × 4.21 × 1.61 in)
• Weight: 205g (7.23 ounces)
• Power Supply: Built-in lithium battery with USB charging support

Comprehensive Band Coverage

The ATS-20+ Plus receiver is preloaded with a wide range of frequency bands, making it ideal for various listening preferences. Some of the notable bands include:

• FM Band: 84.00 – 108.00 MHz
• Longwave (LW): 100 – 510 kHz
• Medium Wave (MW): 520 – 1720 kHz
• Shortwave (SW): Covers major amateur radio bands such as 160m, 80m, 40m, 30m, 20m, 17m, 15m, 12m, and 10m
• CB Band (11m): 26.200 – 27.900 MHz

Perfect for Radio Enthusiasts and Ham Operators

The ATS-20+ Plus is designed to meet the needs of both hobbyists and professionals. With its ability to receive a broad spectrum of signals, it is a perfect companion for emergency preparedness, travel, and outdoor adventures. The SSB (LSB & USB) support is especially useful for amateur radio operators looking to communicate over long distances.

What’s in the Box?

• 1 x ATS-20+ Plus Radio Receiver
• 1 x Antenna
• 1 x USB Charging Cable

Final Thoughts

The ATS-20+ Plus ATS20 V2 SI4732 Radio Receiver is a powerful and portable option for anyone passionate about radio communication. With its advanced features, durable design, and extensive band support, it is a must-have for both casual listeners and dedicated radio enthusiasts. Get yours today and experience high-quality reception like never before!

Get yours here

The post Discover the New ATS-20+ Plus ATS20 V2 SI4732 Radio Receiver appeared on Hamradio.my - Amateur Radio, Tech Insights and Product Reviews by 9M2PJU.