Radio Amateurs worst Nightmare
'Follow up' on my annoying radio noise from 160 m to 2 m History:
29/2 2012, I have now inserted an Amidon ferrite toroid FT-240-61 on all 4 cables
to/from the gas burner (with 14 turns) and I'm very satisfied.
If I should reduce the noise today I would use FT-240-43 or Fair-rite 2631803802 (FT-240-31)
for better noise reduction.
Noise on power cable
Noise on outdoor feeler cable
4 noise ferrites beneath the gas burner
25/1 2012, Once again noise on HF-bands and this is radiated from my new gas burner :o(
A Vaillant ecoTEC exclusiv VC 146/4 (Don't buy it)
Measurement on power and outdoor feeler cable shows substantial noise on both cables
Noise on the outside sensor cable near the gas burner
Noise on the outside sensor cable near the sensor
Noise on outside sensor cable with a noise filter on the power cable.
Noise on power cable with a noise filter inserted
Noise on power cable with a noise filter inserted and a cable clamp on on outdoor feeler cable
Noise on outdoor feeler cable with a couple Cable Clamp ons på feeler, power and hot water pump cables
Noise on power cable with a couple Cable Clamp ons på feeler, power and hot water pump cables
I think it's necessary with a good power filter and a filter on the outdoor feeler.
The outdoor feeler feed the burner with time pulses from a DCF-77 receiver.
I suspect the built-in power supply is rather noisy!!!
Opdateret d. 29.6.2014/OZ1DB