[RFI] Whole Home Generator
Dave (NK7Z)
dave at nk7z.net
Tue Feb 8 21:11:36 EST 2022
Many thanks to all that assisted... I will post the results... I
ordered today a 13 KW whole home Generator from Cummins. It will be
delivered tomorrow. The transfer switch is 16 to 20 weeks out...
73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources
On 2/5/22 12:13, Jim Brown wrote:
> On 2/5/2022 11:18 AM, Christopher Wawak wrote:
>> The single point entry for antennas at my house is right behind the
>> generator.
>
> If everything in your home and station is properly grounded and bonded,
> and your feedlines are coax, what matters is the proximity of a noise
> source to ANTENNAS, not their feedlines.
>
> I did not notice any major RFI when it was running, or when
>> it's idle. My major concern was the battery charger. So far I have
>> not noticed any more noise than usual, but I am not in a radio quiet
>> zone or anything.
>
> That's a BIGGIE in terms of assessing whether a new device is quiet.
> Most of us who live in the developed world are surrounded by noise
> sources -- almost everything that plugs into AC has a switch-mode power
> supply that generates noise and conducts it to the power line, which
> radiates it. If we've already got S7 noise, we're unlikely to notice a
> new contributor.
>
> I live in the mountains, with neighbors 400-600 ft from my antennas. In
> one direction, my 7-el 6M LFA sees an S1 noise level; when pointed to
> neighbors in three different directions, it gets up to S5. I see similar
> differences on 160-40 listening on my Beverages.
>
>> I do tune using an SDR on a large screen where I can
>> see the whole band at once, and noise (especially something close like
>> that) would for sure show up.
>
> An SDR with a waterfall is a great tool for seeing and identifying noise.
>
> http://k9yc.com/KillingReceiveNoise.pdf
> https://www.nk7z.net/sdr-rfi-survey-p1/
> https://www.nk7z.net/rfi-site-survey-part-ii-interpretation/
>
> 73, Jim K9YC
>
> _______________________________________________
> RFI mailing list
> RFI at contesting.com
> http://lists.contesting.com/mailman/listinfo/rfi
More information about the RFI
mailing list