Guys,
This has been a very enlightening discussion. And has given me ideas on
tracking down my local RFI issue.
I have a IC-9700 and have been using a 3 element VHF measuring tape yagi to
local. Adding in attenuation using AM as get closer to the source.
A question I have is:
Is there any where a location on the web or perhaps at ARRL when similar
signatures of various types of noise sources are able to be viewed.
I haven’t yet looked so this may be redundant but to be able to see a switch
mode supply vs a grow light on a waterfall or whatever might help narrow down
the search.
I have a local source that seems to be on a timer and the waterfall shows a
squiggly pattern.
Just a thought.
Thanks again for all this excellent discussion
73
Steve NA5C
Sent from my mobile device
> On Dec 30, 2022, at 2:10 PM, Jim Brown <jim@audiosystemsgroup.com> wrote:
>
> On 12/30/2022 9:58 AM, Hare, Ed, W1RFI wrote:
>> The SDR waterfall will not be very helpful with power-line noise, but they
>> are great at identifying switching power supply noises and noises that pulse
>> on and off in a regular pattern.
>> Most of the time, though, we are less concerned with "what is it" as we are
>> with "where is it?"
>
> The principle virtues of the waterfall are recognizing whether it's impulse
> noise or electronic noise; multiple electronic sources and their active hours
> so that 1) we know when to chase them and 2) when multiple sources are
> present, help us chase each individually.
>
> 73, Jim K9YC
> _______________________________________________
> RFI mailing list
> RFI@contesting.com
> http://lists.contesting.com/mailman/listinfo/rfi
_______________________________________________
RFI mailing list
RFI@contesting.com
http://lists.contesting.com/mailman/listinfo/rfi
|