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Re: LF: Question: QRM from induction cookers? - Summary

To: rsgb_lf_group@blacksheep.org
Subject: Re: LF: Question: QRM from induction cookers? - Summary
From: DK7FC <selberdenken@posteo.de>
Date: Mon, 18 Feb 2019 08:59:49 +0100
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Hello Steffi,

RR. Maybe you can ask for a cooker with a GPS input to stabilise the switching frequency. It also needs a PSK input, then you can send me a message. Hey, i also have a grabber, it is just 175 km distant. If you leave a trace here as well, you can invite me too ;-)
73, GL, Stefan

Am 17.02.2019 22:25, schrieb Steffi:
Hi again,

thank you for so many answers!

Special thanks to Eberhard, DL3ZID, for the detailed spectrum screenshots of different QRM sources and also to Alan, G3NYK, for the link to the excellent article about QRM from a NEFF induction hob.
I see that there will sure be some QRM from an induction cooker. But 
mostly, it will be off >23 hours/day - and I can decide about it 
myself. Indeed, the advantages of an induction cooker mentioned by 
Dexter are important.
Maybe I will buy a little extra ceramic glass cooktop, to have a 
low-noise backup cooking solution :)
The answers also show, that in reality the major problem is QRM from 
other electronics which runs 24/7 and not only before lunch. So we 
must carefully chose a "quiet" solar (PV) inverter if we want to 
install solar panels on the roof, for example. Or we'll have to modify 
it with additional filters...
After all, it's even harder to prevent QRN = Neighbour-made-noise. 
Hopefully they don't use PLC or something like that!
And yes, Stefan, I live near Nürnberg and I know Markus and his VLF 
grabber. I will tell him to check the grabber for signals from my 
induction cooker, when it's active the first time. If he can prove the 
reception from MY(!) hob, I will send him a QSL card and invite him 
for lunch :) But it will be hard, it's more than 30 km.
73,
de Steffi - dl8nsb


Steffi schrieb:
Hi LF Group,

soon I will have to buy a new kitchen and I wonder, if an induction
cooker is the right choice (regarding QRM!). Does anyone have experience
with QRM on MF, LF, VLF produced by an induction cooker? Which brands
can be recommended?

I already heard, that there won't be problems on 80m, but what about
lower frequencies?

I'm not yet QRV on MF/LF, but maybe in the future..

Any comments and experiences will be helpful!

73,
de Steffi - dl8nsb







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