Using baluns to minimise noise

Whilst a balun is usually associated with reduced unwanted transmission line radiation (eg. from the feedline and power cord), a balun can also help minimise unwanted noise picked up by your feedline.  This short video provides a practical demonstration.  With thanks to Davide IZ2UUF. You can purchase commercial baluns or make your own.  There are […]

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Using grounding to minimise noise

Good RF grounding should provide a low resistance path to ground for any RF noise which is present. A low resistance path to ground ensures that the noise is conducted away to ground instead of being radiated.  In addition, your station should also have a quality low resistance path to ground. Refer to this link […]

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Using filters to minimise noise

Mains filters can be extremely effective in reducing and in some cases eliminating QRM from the electricity supply to your shack.  If you have a hash-like noise covering a broad range of frequencies, a mains filter may help.  If you are able, a quick check by using a 12V battery supply on your radio will […]

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Using chokes & ferrites to minimise noise

Many well qualified professionals and experienced hams have written excellent reference articles on this topic.  Below are a small selection of highly regarded technical references.  Some are highly technical in nature, but also provide an insight for beginners. At the bottom of this page we provide links to some suppliers, both local and international. This […]

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Club QRM Kill Kit

QRM.guru and RASA encourage all clubs to put together  a Club QRM Kill Kit.   The inventory in this kit is based on references to various technical sources and experience.  As the VK ham community starts using the techniques and tools in this kit, please provide us with your feedback.  If you discover additional items that […]

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