This great case study from a VK amateur…. I have a Telstra NBN modem, used for a FTTN service. It is installed on a shelf in the garage My 40m dipole runs across the garage – the end is about 7m away from the modem. Whenever I transmitted, RF would cause the modem to lose […]
Category: When you cause interference
Radial Free Verticals
Radial Free Verticals By the QRM Guru team From time-to-time we receive emails about QRM and TVI associated with these radial free verticals. The symptoms will usually present as TVI, RF feedback and sometimes an inability to achieve a desirable SWR on the lower bands. We also hear of situations where the antennas appear deaf […]
No House Electrical Earth… interference to neighbours
Thanks Roy VK3GB for this somewhat left-field story about interference. Interference, there is always a sign! Some years ago I moved house and as normal spent the first year renovating and redesigning the garden. Why so you long you may ask? I was laying 120 radials ready for my Butternut HF2 vertical. Once erected you […]
Log Sheet – Neighbours complaining of interference
If your neighbours complain that “you are ruining their TV or radio reception”, engage in a friendly conversation. In the first instance, do not confirm that your station is the source of the noise. Offer to assist and invite them to keep a log of the interference. Make sure you keep a detailed log of […]