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? (the answer might surprise you!)
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 …
[SOLVED] Logitech M331 Receiver Lost
Logitech M331 is a wireless mouse from Logitech. It ships with a small wireless USB receiver that plugs into your PC. This receiver dongle is so small that it’s easy …
MHz to Mbps Calculator
In this post we explain how to convert from Bandwidth (Hz/kHz/MHz/GHz) to Data throughput in terms of Bits per second (bps/kbps/Mbps/Gbps). Formula To calculate the bit rate we use the …
Percent of Modulation Formula and Calculator
The percentage % of modulation is an indicator of the extent to which it is modulated. Here is a picture of an unmodulated sine wave. By comparison here is a …
Modulation Index Formula and Calculator
In this post we present modulation index formula and calculators for three different modulation formats: AM, FM and FSK. Amplitude Modulation Index Modulation index is a measure of the variation …
Hz to ppm Calculator
This calculator converts the ratio of Frequency variation to Center frequency (Hz/kHz/MHz/GHz) to parts per million (PPM) ppm to Hz Formula ppm = (df/F)*106 where F is the center frequency …