The terrible RF interference I see here right across HF looks like this:
But for three weekends in a row it goes off at 2:35pm local time on Sunday and the band looks pretty good for a suburban block. It comes back on again at 35 minutes after midnight. So, exactly 6 hours of peace a week.
What kind of appliance would be on all week except for Sunday afternoons?
The fundamental frequency, where it's strongest, seems to be at 421kHz where it's stronger than the local ABC Radio National transmitter here.
Tecsun PL-365 on Longwave
- Turn the radio off.
- Press the DEL (9/10k) button until it displays 9kHz (it switches between 10 and 9)
- Press the MW key until it displays "150-" (it alternates between 522)
- Turn the radio on, press MW and it will tune from 150kHz