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Amateur Radio, Tech Insights and Product Reviews

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gnu-radio-meshtastic-decode-fail
GNU Radio LoRa mesh network meshtastic raspberry pi SDR software defined radio

Exploring Meshtastic Decoding with GNU Radio on a Raspberry Pi 5

9M2PJU August 4, 2025

Originally by Jeff Geerling – jeffgeerling.com Meshtastic, an open-source project that enables long-range mesh communication…

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type of modulation
amateur radio APRS automatic packet reporting system digital voice ham radio LoRa LoRa APRS iGate LoRa APRS Tracker repeater
9M2PJU 0 Comments

Understanding Emission Designators for APRS and Digital Modes on 2m and 70cm Bands

When working with APRS (Automatic Packet Reporting System), digital modes, or new technologies like LoRa…

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July 11, 2025
lora aprs rssi snr
9M2PJU amateur radio automatic packet reporting system ham radio LoRa LoRa APRS iGate radio amatur
9M2PJU 0 Comments

Understanding RSSI & SNR in APRS LoRa: What Do These Numbers Mean?

If you’ve ever looked at APRS LoRa logs and seen cryptic numbers like -127 and…

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July 9, 2025
meshcore banner
amateur radio bluetooth embedded ham radio internet of things LoRa mesh network meshcore radio amatur udp
9M2PJU 0 Comments

How MeshCore Works

As digital communication networks evolve, there’s growing demand for decentralized, low-bandwidth, and resilient systems that…

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July 6, 2025
meshtastic banner
amateur radio ham radio LoRa mesh network mesh radio meshtastic off grid radio amatur
9M2PJU 0 Comments

How Meshtastic Works

In a world where communication infrastructure can be unreliable—or even unavailable—projects like Meshtastic are pushing…

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July 6, 2025
long range LoRa messaging pager
9M2PJU 0 Comments

LoRaNicator: A Throwback to Pagers, Powered by LoRa

I recently came across a fascinating project shared by Cameron Coward that really caught my…

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June 13, 2025
lilygo watch s3
amateur radio DIY esp32 geek ham radio LoRa meshcore meshtastic open source watch wearable
9M2PJU 2 Comments

T-Watch S3: Open-Source Smartwatch with LoRa and ESP32-S3 for Amateur Radio Enthusiasts

In the world of open-source hardware, the T-Watch S3 stands out as a remarkable addition,…

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April 10, 2025
DIY esp32 LoRa meshtastic off grid open source
9M2PJU 0 Comments

SenseCAP Indicator – A Smart Touchscreen Built for Meshtastic

The world of off-grid communication just got a stylish and functional upgrade. The SenseCAP Indicator…

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April 8, 2025
LoRaWAN
internet of things LoRa LoRaWAN mesh network networking realtime tracking
9M2PJU 0 Comments

What is LoRaWAN?

LoRaWAN (Long Range Wide Area Network) is a network protocol designed to enable long-range, low-power…

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March 18, 2025
chirp spread spectrum
amateur radio chirp spread spectrum frequency shift ham radio internet of things LoRa LoRaWAN radio
9M2PJU 0 Comments

LoRa and Chirp Spread Spectrum (CSS) Modulation: How It Works

LoRa (Long Range) is a wireless communication technology that has gained significant popularity in recent…

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March 17, 2025
reticulum network
amateur radio debian fedora freebsd ham radio internet LoRa mesh network networking open source ubuntu wifi
9M2PJU 0 Comments

Reticulum: The Future of Secure and Resilient Networking

In a world where digital communication is often subject to surveillance, censorship, and centralized control,…

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March 15, 2025
meshcore
amateur radio ham radio LoRa mesh network meshtastic
9M2PJU 0 Comments

Introducing MeshCore: A Lightweight LoRa Mesh Networking Library

Mesh networking has become an essential technology for off-grid communication, emergency response, and IoT applications.…

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March 9, 2025
meshsense
communication debian fedora free open source software LoRa meshtastic off grid ubuntu
9M2PJU 0 Comments

MeshSense: A Comprehensive Tool for Monitoring and Mapping Your Meshtastic Network

If you're using Meshtastic—a popular open-source, long-range, and low-power communication network—keeping track of your network’s…

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March 3, 2025
FreeTAKServer
ATAK LoRa meshtastic Tactical Awareness Kit
9M2PJU 0 Comments

Deploy Your Own Tactical Awareness with FreeTAKServer

Installing FreeTAKServer with Meshtastic and ATAK-CIV FreeTAKServer is an open-source server designed to enhance real-time…

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March 2, 2025
Meshtastic ATAK Civ
ATAK esp32 LoRa mesh network meshtastic
9M2PJU 0 Comments

Setting Up and Using Meshtastic with ATAK-Civ

Introduction Meshtastic is an open-source, off-grid communication platform that uses affordable hardware to create a…

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March 2, 2025
meshtastic.hamradio.my
9M2PJU emergency communication internet of things LoRa low power meshtastic off grid
9M2PJU 2 Comments

Hamradio.my Meshtastic Map – Live Tracking for Off-Grid Communications

What is Meshtastic? Meshtastic is an open-source, long-range, low-power communication system designed for off-grid messaging…

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February 18, 2025
CA2RXU LoRa APRS Tracker
9M2PJU APRS aprs bot LoRa LoRa APRS Tracker
9M2PJU 0 Comments

CA2RXU LoRa APRS Tracker Firmware x 9M2PJU-4 APRS Bot

Exciting New Features for Enhanced APRS Tracking We are thrilled to introduce groundbreaking updates in…

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February 13, 2025
meshtastic
amateur radio communication ham radio long distance LoRa meshtastic outdoor radio amatur
9M2PJU 0 Comments

How Meshtastic Can Be Used Today: A Comprehensive Guide

In an increasingly connected world, the need for reliable, decentralized communication has never been more…

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January 18, 2025
9M2PJU amateur radio APRS aprs bot ham radio LoRa mesh network meshtastic radio amatur text messaging
9M2PJU 0 Comments

Demonstration: Sending Messages Through the Meshtastic-to-APRS Gateway to the 9M2PJU-4 APRS Bot 📡

In today’s fast-paced world, reliable communication is critical, especially when traditional infrastructure may not be…

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January 7, 2025
meshtastic
amateur radio APRS ham radio LoRa meshtastic radio amatur text messaging
9M2PJU 0 Comments

Exploring aprstastic: The Meshtastic APRS Gateway for Ham Radio Enthusiasts

If you're an amateur radio operator looking to enhance your APRS (Automatic Packet Reporting System)…

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January 4, 2025
amateur radio APRS automatic packet reporting system ham radio LoRa LoRa APRS iGate LoRa APRS Tracker radio amatur
9M2PJU 2 Comments

Exploring LoRa APRS: VHF vs UHF Performance

In the rapidly evolving world of amateur radio and the Internet of Things (IoT), the…

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September 30, 2024
lora aprs antenna
amateur radio APRS automatic packet reporting system ham radio LoRa LoRa APRS iGate LoRa APRS Tracker radio amatur
9M2PJU 0 Comments

Choosing the Best Antennas for Your LoRa APRS Tracker and iGate at 433 MHz

When it comes to reliable communication with your LoRa APRS (Automatic Packet Reporting System) tracker…

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September 30, 2024
amateur radio APRS automatic link establishment ham radio LoRa LoRa APRS Tracker radio amatur
9M2PJU 0 Comments

Optimizing Smart Beacon Profiles and Power Settings for LoRa APRS Tracker

In the world of amateur radio and APRS (Automatic Packet Reporting System), optimizing your Smart…

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September 29, 2024
amateur radio APRS automatic packet reporting system ham radio LoRa radio amatur
9M2PJU 0 Comments

Optimizing LoRa APRS Tracker for Maximum Battery Life

As an avid user of LoRa APRS trackers, I’ve dedicated considerable time to fine-tuning my…

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September 29, 2024
amateur radio chirp spread spectrum ham radio internet of things LoRa
9M2PJU 0 Comments

The Power of Chirp Spread Spectrum (CSS): History, Techniques, and Applications

Introduction Chirp Spread Spectrum (CSS) is a unique modulation technique renowned for its robustness, long-range…

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September 15, 2024
amateur radio APRS automatic packet reporting system ham radio LoRa
9M2PJU 0 Comments

Convert Your Heltec Wireless Stick Into a 433 MHz LoRa APRS iGate or Digipeater

In this guide, we'll walk you through the steps to turn a Heltec Wireless Stick…

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September 14, 2024
amateur radio APRS automatic packet reporting system ham radio heltec LoRa radio amatur
9M2PJU 0 Comments

Convert Your 433 MHz Heltec Wireless Tracker into a 433 MHz LoRa APRS Tracker

In this guide, we'll walk you through the steps to convert a 433 MHz Heltec…

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September 13, 2024

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The hamradio.my server operates on the FreeBSD operating system.

List of hamradio.my sub domains:

  1. https://dx.hamradio.my
  2. http://aprs.hamradio.my
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9M2PJU Google Chrome Extensions:

  1. 9M2PJU Malaysian Ham Radio Callsign Search
  2. 9M2PJU APRS Pass Code Generator
  3. 9M2PJU Watt to dBm Converter
  4. 9M2PJU Ohm's Law Calculator
  5. 9M2PJU Grid Locator Finder
  6. 9M2PJU Dipole Antenna Calculator
  7. 9M2PJU Resonance Calculator
  8. 9M2PJU IPv4 Calculator
  9. 9M2PJU Classic Cipher Tool
  10. 9M2PJU Mils To Degrees Converter
  11. 9M2PJU Islamic Prayer Times
  12. 9M2PJU Easy Recipe Finder
  13. 9M2PJU Drain Calculator
  14. 9M2PJU SWR Calculator
  15. 9M2PJU Quran Verse of the Day
  16. 9M2PJU Enigma Machine Simulator
  17. 9M2PJU Recharge Calculator
  18. 9M2PJU Malaysia Electricity Calculator
  19. 9M2PJU Text To Morse Code Converter
  20. 9M2PJU RSA Key Generator

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