[RFI] RFI - GE Profile Gas Range - Model PGS920SEF1SS

Jim Brown jim at audiosystemsgroup.com
Mon May 11 21:14:51 EDT 2015

On Mon,5/11/2015 2:41 PM, Fred - NA2U wrote:
> If not, can someone suggest a course of action in finding out who at GE might handle such a problem?

I would start with the installing contractor (or vendor). There is, for 
example, a possibility that wiring to the unit is faulty. Take the 
position with whoever you contact that any electronic device must meet 
stringent RF limits per Part 15 of FCC Rules for a Class B (residential 
use) product, so if it is causing interference, it is defective and they 
must fix it. And do NOT tell them about HAM radio. Just tell them that 
it is causing interference to your AM and FM radio! That makes it much 
harder for them to think of your complaint as a small minority.

If you haven't already done so, probe around the unit with a portable 
consumer radio. The Tecsun PL380 costs less than $50, covers LF, MF, HF, 
and FM broadcast. The Tecsun PL660 and PL880 cost about $150 and $200 
respectively. They are worth the difference in price -- better 
sensitivity, they receive SSB, and they have the AM aircraft band that's 
above 108 MHz.

Look at the unit as closely as you can. What electrical connections are 
present? How does the unit get it's power?  Does it plug into an outlet, 
or is wiring connected by an electrician? If an outlet, who provided the 
outlet? Is all of this wired correctly? Is the power line green wire 
connected directly to metal on the range? It must be, by law.

If power is the only connection to the unit, that's probably what is 
radiating the trash. If so, it may be possible to kill the RFI with 
multiple turns of the power line around a #31 or #43 toroid. The two 
mixes are both effective from 40-10M. None of that will help if the 
trash is radiated by internal wiring.

And by all means, keep us informed of how things work out, what fixes 
the problem, etc.

73, Jim K9YC

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