QRM Guru Videos

All these instructional videos are accessed from various posts on this website. They a presented here in chronological order as a instructional series.   Video 1 – An Introduction to Interference Video 2 – DF Loop Construction Video 3 – Gathering Information Video 4 – Locating the noise source Video 5 – Complaints Processes Video […]

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Latest News – June 2019

June 2019: More updates to QRM.guru with case studies on garage door openers, fluro lights and we start a list of recommended LED lights for your home.  Please email us if your club would like us to visit to demonstrate QRM.guru 14-18 May 2019: RASA visits four VK2 radio clubs to demonstrate QRM.guru.  Send us […]

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The Process

QRM.guru is an aid in the search, identification and removal, reduction and hopefully elimination of electrical noise around the home and surrounds, and more particularly interference to the amateur radio station. It is suggested to read the “Start here” page first then investigate sections of the site that interest you.   If you’re wanting to […]

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Locating noise in your home

If your noise source is limited to your home (and property) then you’re in luck.  You have much greater control over how the noise can be resolved. Follow this simple procedure to locate the noise. Power your receiver with a 12v battery so you’re independent of the mains supply You can start by turning off […]

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Example – Basic Diagnosis

This is a simple example of how you might conduct the first step in identifying the noise/s.  John has moved to a new QTH has has some noise issues. John is using the log sheet and profiling sheet found under Templates.  He is keeping a detailed journal. John notes that every time he turns on […]

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Identifying the noise – Useful links

This post provides links to some useful sites and resources to help you identify your noise.  Please send us any additional resources or links you know about. Two common and sometimes misunderstood terms (or Q-codes) are QRM and QRN.  The images below provide a high level explanation of the difference between QRM and QRN. This […]

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Basic Diagnosis – Start here

Radio Frequency Interference (RFI) or noise, has become one of the single largest impediments to HF operation in any urban environment.  This article covers the basic philosophies to help you identify and (hopefully) resolve your noise issues. This is not about throwing your arms up in despair and moaning “every time I turn on 40m […]

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