[Elecraft] RFI issues

Wed Feb 19 07:17:12 EST 2020

Thanks, I was considering one of those...

73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist
ARRL Asst. Director, NW Division, Technical Resources

On 2/18/20 7:55 PM, hawley, charles j jr wrote:
> We bought a new Keurig coffee maker which does a pot or also the pods. It puts a huge noise out to the ham frequencies. Have to turn it off to get on 80M
> 
> Chuck Jack Hawley
> KE9UW
> 
> Sent from my iPhone, cjack
> 
>> On Feb 18, 2020, at 5:51 PM, Bill Lederer <w8lvn.9 at gmail.com> wrote:
>>
>> House we just moved into, we did new under-the-counter lighting.  Once I
>> got the ham shack started, I saw s9 noise on 160 and 80. Turn them off, and
>> it becomes quiet.
>>
>> Other led panel lights produce no noise whatsoever.
>>
>> But now that that is identified, I will be tracking down some other noise,
>> likely in the neighborhood.
>>
>> w8lvn
>>
>>> On Tue, Feb 18, 2020 at 5:29 PM Fred Nassar <fnassar62 at gmail.com> wrote:
>>>
>>> Had a similar issue moving to a new QTH. It turned out to be a bad
>>> transformer in the neighborhood. You could call in an RFI complaint once
>>> you rule out your own QTH and asked them to sniff around.
>>>
>>> You can also sniff around with a 2 or 6 meter SSB rig if you have one.
>>>
>>> Fred
>>> KE4Q
>>>
>>>> On Tue, Feb 18, 2020, 5:47 PM Michael Walker <va3mw at portcredit.net> wrote:
>>>>
>>>> HI Andreas
>>>>
>>>> Sorry to hear about your noise.
>>>>
>>>> I doubt your noise is related to digital TV as that is a long way away in
>>>> the frequency world.  It is pretty common to assume that it is not on
>>> your
>>>> own property.  I saw one guy who said the same thing and then found out a
>>>> year later it was his new dryer that was noisy even when they were not
>>>> using it.
>>>>
>>>> I would not be surprised that most of your HF noise is within your own
>>>> property unless you did some significant research by  holding an AM radio
>>>> near each and every power cube or charger for phones, etc.  There are not
>>>> too many that are quiet.
>>>>
>>>> I use my KX2 to find most of my HF noise issues and I must have tossed
>>> out
>>>> 15 bad chargers.  The ones I could not just toss away, I had to add Mix
>>> 31
>>>> chokes to.
>>>>
>>>> When you moved into your new house did you replace all the light bulbs
>>> with
>>>> LED bulbs?  They can be noisy.
>>>>
>>>> If you haven't taken the time to do an indepth study on your own house,
>>> you
>>>> should.  You might be surprised.  I would plan an all day exercise when
>>>> everyone is out of the house.
>>>>
>>>> Mike va3mw
>>>>
>>>>
>>>>> On Tue, Feb 18, 2020 at 2:25 PM Dave Cole <dave at nk7z.net> wrote:
>>>>
>>>>> Hi,
>>>>>
>>>>> I might suspect something else...
>>>>>
>>>>> Have you done a power off test of your home yet?
>>>>>
>>>>> 73, and thanks,
>>>>> Dave (NK7Z)
>>>>> https://www.nk7z.net
>>>>> ARRL Volunteer Examiner
>>>>> ARRL Technical Specialist
>>>>> ARRL Asst. Director, NW Division, Technical Resources
>>>>>
>>>>> On 2/18/20 8:29 AM, Andreas Wachter via Elecraft wrote:
>>>>>> I live about 1.6 miles from some tall antenna towers broadcasting
>>>>> digital TV (KBCB) at 208 kW ERP on channel 19 (500 - 506 MHz) and on FM
>>>>> (KWPZ-FM) at 63 kW ERP on 106.5MHz - according to FCC info on KBCB and
>>>>> KWPZ-FM. Ever since I moved to this QTH a few months ago, I am unable
>>> to
>>>>> use my K3: solid S9+ noise on all bands using a makeshift dipole strung
>>>> up
>>>>> on some trees outside my house. I’ve tried to locate the source of the
>>>> RFI
>>>>> within my home but so far have been unable to locate any RFI emanating
>>>> from
>>>>> within my home. Could it be that the TV/FM stations antenna towers,
>>> which
>>>>> are within direct line of sight from my house, might be responsible for
>>>> the
>>>>> RFI?
>>>>>>
>>>>>> 73, Andreas
>>>>>>
>>>>>> K6AKW
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>>
>>
>> -- 
>> --w8lvn--
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