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kv4p HT – Turn Your Android phone into Modern Ham Radio transceiver

What is it? kv4p HT is a homebrew Open Source VHF radio that can turn your android mobile phone capable of voice and text communication completely off-grid. At least a Technician class amateur radio license. The radio simply plugs into the USB C port on your Android...
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Resistor Color Codes

Example for a Carbon 22000 Ohms or 22 KiloOhms also known as 22K at 5% tolerance: Band 1 = Red, 1st digit Band 2 = Red, 2nd digit Band 3 = Orange, 3rd digit, multiply with zeros, in this case 3 zero's Band 4 = Gold, Tolerance, 5% Example for a Precision Metal Film...
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Amplifiers

Knowing what a diode is, or how a triode works is of little use unless you have some practical knowledge of how it can be applied within a circuit. We are going to begin with a VERY basic schematic of an early transmitter. When ever we are looking at a schematic...
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Resistor Color Codes

Resistor Color Codes

Jul 23, 2022 |

Example for a Carbon 22000 Ohms or 22 KiloOhms also known as 22K at 5% tolerance: Band 1 = Red, 1st digit Band 2 =...

Amplifiers

Amplifiers

Jul 22, 2022 |

Knowing what a diode is, or how a triode works is of little use unless you have some practical knowledge of how it can...