Software-Defined Radio Simplified
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oneSDR is a collection of essays and articles on Software-defined Radio. We have collectively spent over a decade working on and studying SDR products and wish to share that knowledge.
Software-Defined Radio Simplified
14h ago
In today’s connected world, consistent and reliable mobile phone service is more crucial than ever. However, achieving good signal strength can be a challenge, particularly in rural areas, buildings with complex structures, or at the edges of a network’s coverage.
Many 4G and 5G networks operate in Band 71. This band is not as common as the other bands (such as 2, 4 and 5). However all major carriers use it and your phone might be operating in this band.
If you’re experiencing dropped calls and poor internet speeds then a Band 71 Signal Booster can be used to amplify signals. In this post we r ..read more
Software-Defined Radio Simplified
2d ago
The Baofeng UV-5R and UV-5R Plus are both popular models of handheld transceivers used by amateur radio enthusiasts.
While they are quite similar in functionality and specifications, there are some differences primarily in their build quality and aesthetic features. Here’s a breakdown of the differences:
UV-5R
The Baofeng UV-5R is a dual-band radio that operates on both VHF (Very High Frequency) and UHF (Ultra High Frequency) bands. It’s known for its low cost and versatility, making it a popular choice among new and seasoned ham radio operators. The UV-5R offers features like 128 channel sto ..read more
Software-Defined Radio Simplified
2d ago
An active antenna is a type of antenna that includes an electronic amplifier to boost the signal it receives. This design contrasts with passive antennas, which do not include any electronic components to enhance the signal.
Active antennas are widely used in scenarios where receiving a strong signal is challenging yet critical.
In this post we discuss how to build an active antenna for ADS-B signal reception.
Table of Contents
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ADS-B Frequency Range
Antennas for ADS-B
Amplifier Options
15 dB Gain @ 1090 MHz
30 dB Gain @ 1090 MHz
14 dB Gain @ 978 MHz and 1090 MHz
Which Amplifier to ..read more
Software-Defined Radio Simplified
3d ago
The UV-5R and UV-5R 8W (or UV-5R8W) are both models of handheld radios from Baofeng, a popular manufacturer known for its cost-effective communication devices.
These radios are part of the amateur radio range and are often used for both personal and professional communication across various frequencies.
The main difference between these two models lies in their power output and consequently their range capabilities.
Let’s get into the details.
Table of Contents
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UV-5R
UV-5R 8W
Key Differences
Summary
Related Posts
UV-5R
The Baofeng UV-5R is a dual-band radio that operates on both VHF ..read more
Software-Defined Radio Simplified
3d ago
The Baofeng UV-5R and BF-F8HP are two of the most popular models of handheld transceivers among amateur radio enthusiasts, emergency response teams, and casual users alike.
Both models are celebrated for their affordability and functionality, but they cater to slightly different needs and preferences. In this article, we’ll dive into a detailed comparison of these two models to help potential users make an informed choice.
Table of Contents
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Design and Build
Internal Electronics
Features and Functionality
Power Output
Battery Life
Frequency Range
Accessories and Compatibility
Ease o ..read more
Software-Defined Radio Simplified
3d ago
The Baofeng UV-5R and UV-5G (also called the UV-5X) are both handheld radios that are popular among amateur radio enthusiasts, but they cater to slightly different uses and regulations.
Essentially UV-5R is for amateur radio applications while UV-5G is a GMRS (General Mobile Radio Service) two-way radio.
Each represents a different use case and application scenario. The radio specifications reflect these differences.
In this post we provide a detailed rundown of their differences:
Table of Contents
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Frequency Range
Power Output
Licensing Requirements
Features and Accessories
Use Case
S ..read more
Software-Defined Radio Simplified
4d ago
When it comes to personal or professional communication over radio frequencies, two popular choices are Family Radio Service (FRS) and General Mobile Radio Service (GMRS).
Both types of radios are widely used for short-distance communication, but they cater to different needs and follow specific regulations set by the Federal Communications Commission (FCC).
Understanding the differences between FRS and GMRS can help you decide which radio service best fits your communication needs.
Table of Contents
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What is FRS?
What is GMRS?
Key Differences between FRS and GMRS
GMRS vs FRS distance ..read more
Software-Defined Radio Simplified
4d ago
This tool calculates Gigahertz value from nanosecond.
Enter the value in ns and the tool will provide the equivalent value in GHz.
Payment options
GHz to ns
Formula
F (GHz) = 1/T (ns)
Example Calculation
1 ns converts to 1 GHz
1000 ns converts to 0.001 GHz
Background
A nanosecond (ns) is a unit of time that equals one billionth of a second. The term comes from the prefix “nano,” which is derived from the Greek word “nanos,” meaning “dwarf.” In scientific notation, a nanosecond is represented as 1 ns or 10-9 seconds. This incredibly short span of time is commonly used in electronics, telecom ..read more
Software-Defined Radio Simplified
4d ago
The difference between a tri-band and a dual-band two way radio lies primarily in the range of frequencies they can access
Dual-Band Radios
These radios can operate on two different frequency bands. Typically, dual-band radios cover the 2-meter band (144-148 MHz) and the 70-centimeter band (420-450 MHz). These are the most common bands used by amateur radio operators. Users can switch between different bands depending on their communication needs or local repeater availability.
Tri-Band Radios
Tri-band radios can operate on three different frequency bands, adding more versatility. Along with ..read more
Software-Defined Radio Simplified
5d ago
The Baofeng UV-82HP will not receive or transmit at 220 MHz (1.25 m)
It only operates in the following frequencies:
65-108 MHz (Only commercial FM radio reception)
VHF: 136-174 MHz(Rx/Tx).
UHF: 400-520 MHz (Rx/Tx); Broad (Wide) / Narrowband (Narrow) Selectable
Which Radio Operates in 220 MHz band (1.25m)?
UV-82X3 is a tri-band radio that is capable of transmitting and receiving in the 220-225 MHz Ham Radio band.
The specifications for this product are:
Tx/Rx Frequency Range:
136-173.975 MHz,
220-225 MHz,
400-519.975 MHz
Rx Frequency Range:
FM Radio: 68-105 MHz
The kit also includes 1 x ..read more