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Amateur Radio, Tech Insights and Product Reviews

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Radioberry
amateur radio do it yourself ham radio homebrew raspberry pi software defined radio

Radioberry: A Raspberry Pi-Based SDR Transceiver

9M2PJU April 14, 2025

Software-defined radio (SDR) enthusiasts and amateur radio operators seeking an affordable yet powerful solution will…

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window coax
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9M2PJU 0 Comments

Door/Window Pass-Through Flat RF Coaxial Cable – SO239 UHF Female to UHF Female (50 Ohm)

Door/Window Pass-Through Flat RF Coaxial Cable – SO239 UHF Female to UHF Female (50 Ohm)…

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April 8, 2025
MMANA-GAL antenna modelling software
amateur radio antenna antenna design free software ham radio homebrew MMANA-GAL
9M2PJU 0 Comments

Unlock the Secrets of Your Antenna with MMANA-GAL

Are you an amateur radio enthusiast looking to elevate your antenna designs? Whether you're a…

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March 4, 2025
diversity factor
amateur radio DIY do it yourself electrical ham radio home improvement homebrew safety
9M2PJU 0 Comments

Understanding Diversity Factor in Electrical Wiring: A Comprehensive Guide with a Focus on Circuit Breaker Selection and Rating

In the world of electrical engineering, designing safe, efficient, and cost-effective electrical systems is paramount.…

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February 8, 2025
3 phase motor
electric electrical Electrician electricity home home improvement homebrew
9M2PJU 0 Comments

Single-Phase Motors vs. Three-Phase Motors: A Deep Dive into How They Work, Their Differences, and Applications

Electric motors are the unsung heroes of modern life. They power everything from the fan…

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February 1, 2025
3 phase electric malaysia
DIY do it yourself electric electrical electricity home home improvement homebrew tips and tricks
9M2PJU 0 Comments

Balancing Equipment Load for 3-Phase Home Electrical Wiring

In modern homes, especially in countries like Malaysia where three-phase electrical systems are commonly used,…

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February 1, 2025
earthing system
DIY do it yourself earthing electric electrical Electrician electricity grounding system home home improvement homebrew safety
9M2PJU 0 Comments

Understanding TT, IT, and TN Earthing Systems for Home Electrical Safety

Earthing, or grounding, is a critical aspect of electrical systems that ensures safety, protects equipment,…

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January 31, 2025
smart switch
DIY do it yourself electric electrical Electrician electricity home home improvement homebrew lighting
9M2PJU 0 Comments

Neutral vs. No-Neutral Smart Switches: Which One is Right for You?

One of the most common questions homeowners ask when upgrading to smart home technology is:…

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January 31, 2025
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9M2PJU 0 Comments

Homebrew in Amateur Radio

Homebrew in amateur radio refers to the practice of building and designing your own radio…

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January 13, 2025
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9M2PJU 0 Comments

Essential Repair and Maintenance Tools for Amateur Radio Operators

Amateur radio operators, or HAM radio enthusiasts, understand the importance of having a well-equipped radio…

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January 13, 2025
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9M2PJU 0 Comments

True RMS vs Non-True RMS Measuring Tools: A Deep Dive into Accuracy for Amateur Radio Operators

As amateur radio operators, we depend on precise measurements to ensure the best performance from…

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January 13, 2025
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9M2PJU 0 Comments

Proper Wire Preparation and Connection Techniques for Safe Electrical Installations in Amateur Radio and DIY Projects

When it comes to electrical installations, especially in amateur radio and DIY electronics, the quality…

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January 4, 2025
amateur radio antenna cable DIY hamradio homebrew tools wiring
9M2PJU 0 Comments

GT and EN Terminals Cable Crimp

When it comes to wiring projects, whether you're working on a DIY electronics setup, ham…

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December 26, 2024
BOSCH DIY homebrew power tools professional technology tools
9M2PJU 0 Comments

Bosch GO 3: The Revolutionary Cordless Screwdriver for DIY Enthusiasts

In the world of power tools, Bosch has consistently delivered high-quality and innovative products. The…

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December 25, 2024
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9M2PJU 0 Comments

Unlocking Wireless Secrets with the Universal Radio Hacker (URH)

In a world where wireless communication reigns supreme, understanding the intricate dance of signals that…

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March 21, 2024
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9M2PJU 0 Comments

Homebrew Common-mode Choke

Common-mode choke berfungsi untuk mengurangkan common-mode current yang mengalir melalui kabel coaxial seterusnya mengurangkan risiko…

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September 27, 2014
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9M2PJU 0 Comments

Simple Antenna For 80 Meters Band

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February 13, 2014
amateur radio ham radio helically loaded magnetic loop antenna homebrew k8nds
9M2PJU 0 Comments

K8NDS Helically Loaded Magnetic Loop Antenna

Enjoying Amateur Radio for 48 years now. . Check Out My Commcat LIve Page, watch…

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December 19, 2012
helically loaded magnetic loop antenna homebrew k8nds
9M2PJU 0 Comments

Helically Loaded Magnetic Loop Antenna

Helically Loaded Magnetic Loop Antenna Object of the design:There are many designs and information available…

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December 19, 2012
brunei CW homebrew iambic morse code v85an
9M2PJU 0 Comments

V85AN Demonstrate His Homebrew Iambic Keyer

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October 18, 2012
amateur radio code morse cw paddle homebrew iambic key morse code radio amatur v85an
9M2PJU 0 Comments

CQ 14.030MHz With V85AN Homebrew Paddle

Just trying Azril V85AN homebrew keyer. He made it from a saw blade, equipped with…

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October 18, 2012
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9M2PJU 0 Comments

Homebrew Morse Keys From Brunei

Very nice, which one do you prefer ?

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September 18, 2012
9m2ar 9M2ZN cw operator high speed cw homebrew malaysia morse code single paddle keyer
9M2PJU 0 Comments

9M2ZN Homebrew Single Paddle CW keyer

Cikgu Mazwan 9M2ZN adalah salah seorang high speed CW operator di Malaysia yang saya kenali.…

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June 9, 2012
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9M2PJU 0 Comments

Helical Antenna Calculator For Amateur Radio

Helical antenna calculator by R.J. Edwards G4FGQ. The main reason for using a helically wound…

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May 23, 2012
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9M2PJU 0 Comments

2 Ele Delta Loop Beam Design

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May 20, 2012
antena radio amatur antenna delta loop high frequency homebrew malaysia
9M2PJU 0 Comments

Delta Loop Antenna Untuk High Frequency

Delta loop adalah satu multiband antenna yang senang dibuat dan toleran terhadap objek yang berdekatan.…

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November 23, 2011
amateur radio antena radio amatur antenna cara membuat CW do it yourself homebrew new carolina windom QRP radiation
9M2PJU 0 Comments

New Carolina Windom

New Carolina windom atau window antenna adalah sejenis off center feed dipole. Antenna jenis ini…

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November 23, 2011
antena radio amatur antenna homebrew horizontal malaysia sains
9M2PJU 0 Comments

HALO Antenna

halo antenna adalah antenna yang mempunyai polariti mendatar, omnidirectional dan dipole separuh panjang gelombang. bentuknya…

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November 21, 2011
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9M2PJU 0 Comments

Antena Dipole Separuh Gelombang

Seperti yang kita sudah sedia maklum, dipole antenna adalah antenna ringkas yang boleh dibuat dari…

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November 21, 2011
antenna basikal dan radio amatur cara pasang g5rv communication homebrew how to install g5rv oscillator radiasi radiation simplex
9M2PJU 0 Comments

G5RV Antenna: Inverted V Atau Flat ?

G5RV adalah satu jenis antenna dalam kategori multiband yang memerlukan tuner. Antenna ini menjadi pilihan…

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November 20, 2011
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9M2PJU 0 Comments

Magnetic Loop Antenna Calculator

There is calculator for building magnetic loop antenna. Try this calculator, to see hows the…

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November 3, 2011
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9M2PJU 0 Comments

Project: Bluetooth Morse code Keyboard

Demo of a Morse code keyboard linked to a computer over Bluetooth. More details including source…

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August 2, 2011
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9M2PJU 0 Comments

Cascata – an Arduino Waterfall by WA5ZNU

What is Cascata? Cascata is an Arduino Waterfall display program built using the Arduino and…

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July 14, 2011
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9M2PJU 0 Comments

Become a Ham Radio Operator

Become a Ham Radio Operator A Yaesu FT-2000 tranceiver. Photo by Hideki Saito on flickrAmateur radio is…

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June 20, 2011
amateur radio duplexer filter homebrew radio frequency repeater VHF
9M2PJU 0 Comments

Duplexer

A duplexer is a device that allows bi-directional (duplex) communication over a single channel. In…

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June 20, 2011
amateur radio antenna design homebrew loading coil
9M2PJU 0 Comments

Antenna Loading Coil

An antenna loading coil is an inductor placed in series with an antenna element in…

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June 20, 2011
antenna design do it yourself high frequency homebrew shortwave
9M2PJU 0 Comments

How Make Your Own G5RV Antenna

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June 18, 2011
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9M2PJU 0 Comments

Magnetic Loop Antenna Project

Hello all readers, i would like to share this video of my first build of…

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June 11, 2011
homebrew morse code song
9M2PJU 0 Comments

New Morse Code Song

i have successfully uploaded my home made video for Morse code. It is an audio…

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May 25, 2011
amateur radio antenna design DIY hamradio homebrew magnetic loop manpack py1ahd QRP
9M2PJU 0 Comments

QRP 900 GRAMS HYDRAULIC TUNED SMALL MAGNETIC LOOP

My name is Alexandre Grimberg, my call sign is PY1AHD. I have born in Rio…

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April 16, 2011
9m2sx amateur radio antena antenna design DIY hamradio homebrew magnetic loop radio amatur
9M2PJU 0 Comments

9M2SX’s 40m-20m Magnetic Loop Antenna

Having Space Constraint At Your QTH To Put Up An Antenna For HF Band?.Then Try…

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April 16, 2011
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9M2PJU 0 Comments

9M2SX’s Grounding Wire Using Coaxial Cable With Capasitor

HF TRANSCEIVER GROUND (EARTH) WIRE USING CO-AXIAL CABLE.       Living in a flat has it’s…

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April 16, 2011
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9M2PJU 0 Comments

Specialized Interests and modes In Amateur Radio

While many hams simply enjoy talking to friends, others pursue a wide variety of specialized…

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April 13, 2011
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9M2PJU 0 Comments

Configuring TinyTrak3Plus On Ubuntu

TinyTrak3Plus is an APRS GPS position encoder which, when connected to a serial GPS and…

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July 2, 2010
amateur radio antenna design diana eng do it yourself hamradio homebrew kc2uhb makezine satellite yagi
9M2PJU 0 Comments

KC2UHB’s Collapsible Fabric Yagi Antenna

Congratulations to Miss Diana Eng KC2UHB for her new Collapsible Fabric Yagi Antenna. Combination between…

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May 4, 2010
amateur radio diode do it yourself hacking ham radio homebrew ic-706 icom mk ii g modification transmitter wideband
9M2PJU 0 Comments

ICOM IC-706 MK II G Wideband Transmit Mod

This modification of the Icom 706 MK IIG ( At Your Own Risk! ) will…

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April 2, 2010
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9M2PJU 0 Comments

Basic Antennas Lesson

download

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December 17, 2009
9W2PJU amateur radio antenna design DIY ham radio home brew homebrew mobile rig pole repeater sketch slim jim VHF
9M2PJU 0 Comments

My New 146Mhz Slim Jim Antenna

I have successfully made an antenna for my daily use using slim jim diagram for…

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October 19, 2009
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9M2PJU 0 Comments

Slim Jim Antenna Diagram For Amateur Radio

I'm using http://www.m0ukd.com/Calculators/Slim_Jim/index.php to design this slim jim antenna diagram. very helpful to me, maybe…

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October 15, 2009

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