Ian VK3BUF has put together an informative short video based on his popular article The Truth about Ferrites. If you’d like to look at our Ferrite kits, follow this link.
Radio Frequency Interference (RFI), QRM or noise, has become one of the single largest impediments to HF operation in any urban environment. This post covers the basic philosophies to help you identify and get on track to resolve your noise issues. RFI in some urban environments may appear unsolvable, but by working through the methods […]
Here is a simple list of tools you’ll need to start searching for noise: a small DF loop, like this one for VHF and UHF, a Yagi or other directional antenna. Say something around 8db gain a simple wide band AM receiver or a 2/70 handheld for higher frequency work – two suitable options are […]
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 […]
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 […]