My buddy Dave has been having problems with his GT-3TP. He’s narrowed it down to the radio not transmitting. I decided to give him a hand with solving the problem. After much research I was able to understand what was going on and find a solution. This post includes my research findings. This article has been organized to present some basic checks first. After that it gets into problems with transmission and solutions. The solutions presented in this article apply to the following Baofeng radios: UV-5R UV-82 UV-82HP UV-5×3 UV-S9 UV-9R Table of Contents Toggle Basic UV-5R Troubleshooting ..read more

My buddy Dave uses his Baofeng to receive NOAA (National Oceanic and Atmospheric Administration) weather channels for timely updates on weather conditions. However, lately he has encountered some issues with his radio not being able to receive NOAA broadcasts. I decided to give him a hand resolving this issue. Through the course of my research I documented other issues that people have encountered. This article will guide you through troubleshooting steps to resolve this problem. Understanding NOAA Weather Channels NOAA weather channels broadcast continuous weather information, including forec ..read more

Use this tool to calculate the DC offset from the RMS Voltage values of Total Signal AC only signal Payment options Formula VDC = √(Vrms_total2 – Vrms_ac_only2) Example Calculation For a total RMS signal voltage of 6V and AC only value of 5V, the DC offset is equal to 3.32 Volt. The post DC Offset Voltage Calculator appeared first on OneSDR - A Wireless Technology Blog ..read more

This post features a series of calculators to find the Root-mean-square (RMS) voltage with DC offset of different waveforms. Table of Contents Toggle How to Calculate RMS Voltage Time domain samples DC Formula Calculator Sine Wave Formula Calculator Modified Sine Wave Formula Calculator Half-wave rectified Sine Wave Formula Calculator Full-wave rectified Sine Wave Formula Calculator Square Wave Formula Calculator Triangle Wave Calculator Sawtooth Wave Calculator Pulse Wave Formula Calculator Phase-to-phase Voltage Formula Calculator Frequently Asked Questions Wh ..read more

Root Mean Square (RMS) current, often denoted as IRMS, is equal to the value of direct current (DC) that produces the same power dissipation in a resistive load. Table of Contents Toggle Calculator Formula Example Calculation RMS Current from data Peak current to RMS current Why use RMS Current? Related Calculators Calculator To find the RMS current enter Average Power Resistance (use the drop down menu to select the units). Payment options Formula RMS values are commonly used in AC circuit analysis because they allow us to use equivalent DC values in calculations involving power, v ..read more

This tool calculates the Peak current from its Root-mean-square (RMS) value. Enter the RMS value and use the drop down menu to select the units (A/mA/uA/nA) Payment options Formula IPeak = √(2)*IRMS Where: IRMS is the RMS current in Amperes (A) IPeak is the Peak current in Amperes (A) Example Calculation Suppose you have an RMS current of 1 A and you want to calculate the peak current. Using the calculator above gives an answer of 1.414 A. Background What is RMS Current? RMS current, or Root Mean Square current, is a measure of the effective value of a varying electrical curre ..read more

The Root mean square (RMS) average of a set of values is the square root of the arithmetic mean of the squares of the values. Use the calculator below to calculate the RMS average. Enter the numbers x1, x2, x3, … each separated by a comma. Payment options Example Calculation The RMS average of two numbers 1 and 4 is 2.915 RMS Average Formula The formula for this is xRMS = √(1/n)(x12 + x22 + … + xn2) Applications of RMS Electrical Engineering: AC Voltage and Current: The RMS value is used to describe the effective voltage or current of an AC waveform. For example, the RMS value of a sinusoida ..read more

Citizens Band (CB) radios are popular for personal and professional communication over short distances. However, one common issue users encounter is when their CB radio receives signals but won’t transmit. This problem can be frustrating, but with systematic troubleshooting, you can often identify and resolve the issue. Common Causes and Solutions Antenna Issues Antenna Connection: Ensure the antenna is securely connected to the CB radio. A loose connection can prevent proper transmission. Antenna Tuning: An improperly tuned antenna can lead to poor transmission. Use a Standing Wave Ratio (SW ..read more

Baofeng radios, particularly the popular UV-5R model, are widely used by amateur radio enthusiasts, emergency responders, and outdoor adventurers. One of the key factors influencing the performance of these radios is the antenna. While the stock antenna provided with Baofeng radios is functional, many users seek to enhance their radio’s range and signal clarity with aftermarket antennas. This is where Baofeng antenna adapters come into play. What are Baofeng Antenna Adapters? Baofeng antenna adapters are small, connector-based devices that allow users to attach different types of antennas to t ..read more

The Baofeng UV-5R is a popular dual-band handheld transceiver that operates in the UHF and VHF frequency bands. The UV-5R frequency range is 68 – 108 MHz, 136-174 MHz, 400-520 MHz However there are some restrictions on how these frequencies can be used. Let’s get into the details. UV-5R Transceiver Bands The radio can both transmit and receive (Tx/Rx) in the following bands: VHF (Very High Frequency): Frequency Range: 136-174 MHz UHF (Ultra High Frequency): Frequency Range: 400-520 MHz These ranges allow the UV-5R to communicate on both amateur radio frequencies and some commercial and publi ..read more