Powered by Ham Radio Operators
TV OR NOT TV? – a Case Study By Ian Jackson VK3BUF Editor’s Note: Whilst this article relates to a television reception problem, the underlying issues and processes employed by Ian apply to amateur radio. The subject could just as easily have been an amateur radio receiver as opposed to a television. This is also […]
“I negotiated with my installer to put ferrites on the leads from the Enphase micro-inverters, to agree to work with me (at my expense) to mitigate any RFI, and to assure me that I could switch off the system while operating the radio if all else failed. The system is completely quiet, directly under my […]
QRM GURU – A CASE STUDY Air Conditioner Plant Makes S9 Noise at Home Klaus Illhart VK3IU had a significant noise problem that made HF operations difficult. Klaus has prepared a detailed description of the process of tracing and resolving the source of the interference. Here we have an abbreviated version to give readers a […]
Ultrasonic Receiver Short Form Kit For those interested in constructing an ultrasonic receiver project, (like the design featured in the March 2023 QTC magazine) we have blank PCBs and short form kits available. Blank PCB only $10 Short form kit $125 Postage (Australia only) $10 The short form kit includes […]
QRM Guru Service Desk – online ticketing system 30 July 2022 QRM Guru and RASA are pleased to announce that effective 1 August 2022 we’ll be offering email and limited telephone support for amateurs seeking additional assistance with their QRM & RFI problems. A service desk has been implemented using Freshdesk. This works on the […]
HDMI – HIGHLY DEPENDABLE MOBILE INTERFERENCE QRM from your PC? There are probably millions of screens around the world which use HDMI video connections. HDMI is supposed to stand for ‘High Definition Multimedia Interface’ but in Amateur Radio circles it can sometimes cause annoying interference problems. The HDMI standard is quite complex, with several […]
21 July 2022 In a recent ACMA Update ( 20th July) the ACMA deny any official support for QRM Guru. We are genuinely confused by this announcement. It is our firm understanding that our announcement represented our in good faith discussions with ACMA. ACMA’s acknowledgement that QRM Guru would add value to the amateur radio […]
QRM Guru news update 16 July 2022 Key Points: Interference (RFI/QRM/EMC) is an ongoing problem for Amateur Radio in Australia In line with Australian Federal Government Policy, the Australian Communications and Media Authority (ACMA) is implementing a deregulation agenda and a strategy of voluntary compliance The ACMA has fewer resources than ever to address low […]
NBN Co. have recently published a very helpful article on Amateur Radio interference and the NBN. The PDF can be downloaded from the NBN website; click on the image below. You’ll also find plans for a simple 40m notch filter here, thanks to Andrew VK3FS.
Following over two years of Covid lockdowns, it’s great to be back visiting clubs and Hamfests, even in a hybrid (face-to-face and Zoom) environment. 23 July 2022 – Hinesville Amateur Radio Emergency Society. Atlanta USA, via Zoom 14 May 2022 – Moorabbin & District Radio Club Hamfest 6 May 2022 – Eastern & Mountain […]