Topband: RF interference from 160m to GE Electric stove

[Bob K6UJ]

Bob,

I had to chuckle about your experience on triggering all that stuff in 
the house.  :-)
Although not HF band RF interference but I solved an RFI issue on 2 
meters with snap on ferrites also.
When I keyed up my 50 watt 2 meter xcvr it would activate the garage 
door opener on the house next door.  :-)
I probably could have changed the frequency code on his unit but the 
ferrites worked fine.  I don't know the mix
just tried a couple of clamp ons I had.

Bob
K6UJ



On 11/6/16 8:20 AM, Bob Lawson N6RW wrote:
> Jay
>
> If you use snap-on ferrites, make sure they are #31 mix.  31 mix is 
> substantially better than others (like 47 mix) at 160m.  When I had a 
> vertical on the roof at my So Cal house, I would reset my DirecTV HD 
> receivers, trigger my home security alarm, turn off my air 
> conditioning fan and so on, when I transmitted on 80 meters. All 
> problems were solved with 31 mix ferrites.
>
> 73 de Bob N6RW
>
>
> On 11/6/2016 8:58 AM, Lloyd - N9LB wrote:
>> Hello Jay!
>>
>> Have you tried putting a string of "RF Suppression Snap-On Ferrites" 
>> on the power cord?
>>
>> Are the dimensions of the cord such that it is possible to use "RF 
>> Suppression Snap-On Ferrites"?  The largest I could find are .75" 
>> inside diameter. 
>> https://www.dxengineering.com/search/part-type/rf-suppression-snap-on-ferrite-beads
>>
>> If the power cord for the electric stove is too large, perhaps the 
>> Snap-On Ferrites could be added to the Romex  cable feeding the stove 
>> outlet if the wiring is accessible, such as in an unfinished basement.
>>
>> 73
>>
>> Lloyd - N9LB
>>
>> -----Original Message-----
>> From: Topband [mailto:topband-bounces at contesting.com] On Behalf Of 
>> JAYB1943 at OPTONLINE.NET
>> Sent: Sunday, November 06, 2016 9:34 AM
>> To: topband at contesting.com
>> Subject: Topband: RF interference from 160m to GE Electric stove
>>
>> Hi guys – I have recently added a 160m amp to my station and have 
>> created an RFI problem I can’t solve.
>> When I transmit on 160 with any more than 150 watts, the GE electric 
>> stove in the kitchen ALARMS and must be reset. I guess the 160 signal 
>> from the vertical is getting into the AC power lines (just a few feet 
>> away from the AC feed off the pole) and then into the electronics 
>> into the stove. Reducing the output power to 125 watts or so does not 
>> cause the problem. Not a permanent condition; hitting the stop button 
>> on the stove controls stops the stove alarm but starts again when I 
>> transmit. My XYL HATES alarms—she is a retired ICU RN and I think she 
>> got conditioned to panic when ANY alarm goes off !
>> Anyhow I wondered if anybody has any similar experience with problems 
>> like this on 160 and how to solve them. I am tempted to just have an 
>> electrician come in and install a BIG RF filter on the AC line – 
>> either just on the Stove line or to the main feed but I fear this is 
>> a lot of $$$. I am hesitant to do this one on my own for insurance 
>> reasons if nothing else.
>>     Any ideas ?
>>                    Thanx – Jay NY2NY
>>
>>
>> ---
>> This email has been checked for viruses by Avast antivirus software.
>> https://www.avast.com/antivirus
>> _________________
>> Topband Reflector Archives - http://www.contesting.com/_topband
>>
>> _________________
>> Topband Reflector Archives - http://www.contesting.com/_topband
>
> _________________
> Topband Reflector Archives - http://www.contesting.com/_topband