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 …
10 m Dipole Length Calculator
This tool calculates the physical dimensions of a 10 meter dipole antenna. At 10 meters, the dipole length (L) is 15.61 feet. The length of each element of the dipole …
2 m Dipole Length Calculator
This tool calculates the physical dimensions of a 2 meter dipole antenna. At 2 meters, the dipole length (L) is 3.12 feet. The length of each element of the dipole …
160 m Dipole Length Calculator
This tool calculates the physical dimensions of a 160 meter dipole antenna. At 160 meters, the dipole length (L) is 249.8 feet. The length of each element of the dipole …
Current through Voltage Divider Calculator
This tool calculates the current through a voltage divider network consisting of any number of resistors. Enter Formula Using Ohm’s Law, the total current is given by Itotal = Vin/(R1+R2+R3+…) …
Voltage Divider Calculator with 3 Resistors
This tool calculates the voltage across each of three (3) resistors in series. Enter the Input Voltage Vin, and resistor values R1, R2, and R3. Formula V1=Vin*R1/(R1+R2+R3) V2=Vin*R2/(R1+R2+R3) V3=Vin*R3/(R1+R2+R3) The …