03-10-2018, 03:59 PM
Nev,
Don't discount an air conditioning unit or some sort of pump/solenoid device associated with a solar hot water system.
They are just as likely to be a source of interference across the HF spectrum.
Also, if you can, try and see if you can hear the noise on 144 or 432 MHz as well. If you can, then your chances of locating the source would be greater.
Good luck
Peter VK3QI
Don't discount an air conditioning unit or some sort of pump/solenoid device associated with a solar hot water system.
They are just as likely to be a source of interference across the HF spectrum.
Also, if you can, try and see if you can hear the noise on 144 or 432 MHz as well. If you can, then your chances of locating the source would be greater.
Good luck
Peter VK3QI