The noise just started again here, and a quick scan of the house shows
nothing out of the ordinary in terms of stuff running now that wasn't
earlier. No phones, laptops, or kindle on the charger. The chargers for a
couple of these are plugged in, but they are always plugged in anyways. Both
furnances are not currently running. Everything else just like it normally
is around the house.
I thought at one time it might be the pool filter for the neighbors behind
me, but just walked into the back yard and see that their pool is covered,
so guess the filter isn't running. The house to the east of me is currenty
unoccupied, so guessing there probably isn't anything in it causing the
problem right now-guess i need to get the extra antennas up before someone
moves in HI HI
I don't have a battery in the house to run the rig off of, but could hook up
an inverter to the van with an extension cord.
Thanks for the advice so far.
73 John AF5CC
----- Original Message -----
From: "Dale" <svetanoff@earthlink.net>
To: "W5JR.Mike" <w5jr.mike@gmail.com>
Cc: "John Geiger" <af5cc@fidmail.com>; <rfi@contesting.com>
Sent: Monday, November 11, 2013 4:46 PM
Subject: Re: [RFI] RFI Identification Help
Mike,
Yes, that is true. One fellow ham here in IA did solve his recent RFI
problem with the "power down the house" approach, which killed the RFI.
By turning on one circuit breaker at a time, he discovered the culprit was
a battery charger that had a defective battery pack which would not take
the charge properly. That was the only time the charger ever created such
RFI.
In that case, the "fix" was easy, but by killing power in the house, many
hours of possibly frustrating RFI-sleuthing were saved.
73, Dale
WA9ENA
Iowa ARRL Technical Coordinator
-----Original Message-----
From: "W5JR.Mike" <w5jr.mike@gmail.com>
Sent: Nov 11, 2013 10:38 AM
To: Dale <svetanoff@earthlink.net>
Cc: John Geiger <af5cc@fidmail.com>, "rfi@contesting.com"
<rfi@contesting.com>
Subject: Re: [RFI] RFI Identification Help
My experience is that is the pattern of many battery chargers especially
when the battery is fully charged but still connected.
tnx
Mike / W5JR
On Nov 11, 2013, at 11:33 AM, Dale <svetanoff@earthlink.net> wrote:
John,
Locating the source is usually faster than speculating as to what it
might be. Start with the usual - power the '706 with a battery supply
and then turn off power in the ENTIRE house when you are hearing the
noise. If the RFI goes away, the source is somewhere in your house and
you can then start re-applying power one circuit breaker at a time until
the noise returns. You then need to examine every device on that
circuit.
If the RFI does not go away when you power down the house, then it is
time for action. You will need to take the '706 mobile or portable and
start traveling around the neighborhood, or even further. Incidentally,
try using the rig in AM mode to see if you can hear the RFI better than
with SSB. Keep us posted on how it goes.
73, Dale
WA9ENA
-----Original Message-----
From: John Geiger <af5cc@fidmail.com>
Sent: Nov 11, 2013 10:24 AM
To: rfi@contesting.com
Subject: [RFI] RFI Identification Help
I have an RFI problem that mostly shows up during the day, and affects
most
bands, although I notice it most on 15 and 12 meters as I am on those
bands
more during the day. It is a buzzing type noise that comes in around
S6 or
so on my Icom 706MKII, and the NB won't do anything about it. It
doesn't
show up all of the time, but comes and goes, It seems to cycle with 4
seconds on and 3 seconds off, and sometimes will cycle quicker than
that.
Anyone else seen an RFI issue like this and have any idea what it might
be?
It doesn't seem to occur at night.
73 John AF5CC
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