My Videos

Sep 26

Meshtastic RX LNA Gain Testing of Bidirectional RF Amplifier AB89 for 868 & 915 by Technology Master

Bidirection RF Amplifier are ideal solutions for low power (below 5 watts) applications like Meshtastic. They provide power amplification...

May 28

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

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

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 11

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 6

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

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

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

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

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

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

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

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

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

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

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

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

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...

Mar 26

Nano VNA V2 or Any, How To Calibrate Port S21 with Save & Recall | Technology Master

Nano VNA V2 or Any, How To Calibrate Port S21 with Save & Recall. Technology Master. #ham #lora #hamradio #diy #technologymaster #nanovna...