HF Radio Range Calculator
The HF band extends from 3 MHz to 30 MHz. In a previous article, we discussed HF propagation and antennas. In this post, we compute how far an HF signal …
How Far will 5G Reach?
5G networks are being deployed around the world and one of the biggest differences between 4G and 5G is the range specially when it comes to mmWave frequencies. In this …
Buying a Used Helium Miner – Everything you need to know
As many Helium distributors now have new miners in stock with fast shipping, people are no longer able to sell their miners at a premium. eBay is now a great …
Can Mobile Phones Read RFID Tags?
Yes, mobile phones can read RFID tags. RFID tags come in different types. One of those types is NFC or Near-Field Communication. Mobile smart phones can read NFC tags. For …
The Best Helium HNT Miners for 2022 – Where to Buy and Product Reviews
Last updated on April 24, 2022 The Helium network is growing by leaps and bounds. It’s designed to provide connectivity to the billions and billions of IoT devices that are …
Best Indoor TV Antenna with 100 Mile Range – We Investigate the Marketing Claims!
With the increasing popularity of streaming services like Netflix, people are reluctant to pay for cable TV anymore. More so, with a TV antenna, you can watch sports, movies, and …
Baofeng vs. Yaesu
A walkie-talkie, formally known as a handheld radio transceiver, is a portable two-way radio that can be used for a wide variety of applications including military, amateur radio and personal …
What is a Bias Tee?
Updated April 2022 A bias tee or Bias-T is one of the most useful Software-defined Radio (SDR) accessories you have likely never heard of. Low Noise Amplifiers are used to …
UHF Antenna Length Calculator
The UHF (Very High Frequency) range is 300 MHz to 3000 MHz (3 GHz). Use this calculator to find the dimensions of a Dipole antenna designed to operate at this …
VHF Antenna Length Calculator
The VHF (Very High Frequency) range is 30 MHz to 300 MHz. Use this calculator to find the dimensions of a Dipole antenna designed to operate at this frequency range. …
dBm to Distance Calculator
This tool uses the transmitter power and receiver sensitivity in dBm to calculate the maximum distance (miles or km) that can be achieved in a communication system. The system includes …
RMS Average Calculator
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. The formula for this is …
dB Difference Calculator
This calculator finds the difference between two dB values. Example Calculation Let’s say you have an RF attenuator with a value 30 dB followed by an amplifier with gain 20 …