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My Videos


May 28, 2024
L400 LMR400 50 Ohm Low Loss Coax for Meshtastic, Measuring Actual Cable Loss by Technology Master
How much signal I will lose in the coaxial cable between transceiver and antenna? Is the most important question. We will be measuring...


May 27, 2024
Meshtastic BMP280 Digital Barometric Pressure Altitude Sensor Overview by Technology Master
It enables MESHTASTIC to measure altitude and Barometric Pressure. It is BMP280 Digital Barometric Pressure Altitude Sensor. I am...


May 27, 2024
Meshtastic Max98357 I2S 3W Class D Audio Amplifier Overview by Technology Master
Just by attaching 4 ohm speaker with this module we can listen to the audio transmissions on Meshtastic LILYGO T3-S3 2.4GHz device. For...


May 27, 2024
Meshtastic Omnidirectional Microphone INMP441 Inter IC Sound I2S Overview by Technology Master
I2S is not I2C. Inter-IC Sound is for digital sound. Meshtastic Omnidirectional Microphone INMP441 Inter IC Sound I2S Overview by...


May 11, 2024
Meshtastic Antenna Testing Without NanoVNA for 868 MHz by Technology Master
Meshtastic Antenna Testing with RF Attenuators Explained for Everyone by Technology Master. This procedure works well on any frequency...


May 8, 2024
RF Attenuator 2 Watts 20 Db Explained for Everyone by Technology Master
It is a two watts RF Attenuator providing 20 Db power drop. I Explained it for Everyone and not focused at engineers only. I am planning...


May 6, 2024
Advantages of Meshtastic 2.4 GHz International Worldwide Band by Technology Master
LILYGO T3-S3 SX1280. Advantages of Meshtastic 2 4 GHz International Worldwide Band by Technology Master. This band gives the best...


Apr 25, 2024
Meshtastic SNR Signal to Noise Ratio Explained for Everyone by Technology Master
Meshtastic SNR Signal to Noise Ratio Explained for Non-Engineers by Technology Master. The statement that Meshtastic Bidirectional RF...


Apr 24, 2024
Meshtastic 433 MHz Bidirectional RF Amplifier 2.3 Watts at 5v Overview by Technology Master
This RF amplifier works on TX as well as on RX. It has a PA for transmitter side and LNA for receive side. It provides a decent gain on...


Apr 23, 2024
Meshtastic US-915 MHz and EU-868 MHz 5v Bidirectional RF Amplifier AB-89 Overview by Technology Master
Bidirectional Amplifier uses two amplifiers. One for Transmitter(TX) and other for the receiver(RX) side. It has automatic switching...


Apr 22, 2024
Meshtastic 2.4GHz Worldwide Band 4 Watt Bidirectional RF Amplifier Overview by Technology Master
Bidirectional RF Amplifier is an amplifier that works in both directions. It has an power amplifier to increase transmit power and it has...


Apr 17, 2024
Meshtastic LILYGO T3-S3 SX1280+PA 2.4GHz International WorldWide Band, Unboxing by Technology Master
Meshtastic LILYGO T3-S3 SX1280+PA 2.4GHz International WorldWide Band, Unboxing by Technology Master. This model has a +12dB RF Power...


Apr 16, 2024
RF Attenuator Explained for Everyone by Technology Master
What is Radio Frequency Attenuator? RF Attenuator Explained for Non-Engineers. #meshtastic #ham #lora #diy #offgrid #sdr #technologymaste...


Apr 16, 2024
What is dB or Decibel, Power and Voltage Ratios Explained for Everyone | Technology Master
What is dB or Decibel, Power and Voltage Ratios for Non-Engineers. Technology Master. #meshtastic #lora #ham #offgrid #technologymaster...

Apr 7, 2024
Meshtastic 868 MHz SAW Filter, Bandpass Filter Review by Technology Master
Meshtastic 868 MHz SAW Filter Review. 868 MHz Bandpass Filter Review. Performance analysis of SAW Filter for 868 MHz Meshtastic LoRa band...


Apr 2, 2024
Meshtastic RF Output Testing After Region Switching for Heltec LoRa ESP32 V3 | Technology Master
Is it really 22 dbm? Does Meshtastic Heltec LoRa ESP32 V3 Actually Transmits 22dbm? Meshtastic RF Output Testing After Region Switching...


Mar 31, 2024
How To Switch Meshtastic 915 MHz, 868 MHz and 433 MHz Bands on SX1262 Devices | Technology Master
Step by Step guide for changing regions and frequencies e.g EU_868, EU_433, US, LORA_24 etc. It also explains How To Switch Meshtastic...


Mar 29, 2024
Meshtastic Sub-GHz Tri-Band Devices 915 MHz, 868 MHz and 433 MHz | Technology Master
You can Change your Meshtastic device frequency. You can switch between 3 most popular bands i.e 915 MHz, 868 MHz and 433 MHz as well as...


Mar 26, 2024
Nano VNA V2 or Any, How To Calibrate Port S11 with Save & Recall | Technology Master
Nano VNA V2 or Any, How To Calibrate Port S11 with Save & Recall. Technology Master. #meshtastic #ham #lora #sdr #hamradio #offgrid #diy...
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