[RFI] RFI Identification Help

[John Geiger]

Hi Mike,

Thanks for the feedback. Will see what might be charging around the house 
here as a starting point.

73 John AF5CC

----- Original Message ----- 
From: "W5JR.Mike" <w5jr.mike at gmail.com>
To: "Dale" <svetanoff at earthlink.net>
Cc: "John Geiger" <af5cc at fidmail.com>; <rfi at contesting.com>
Sent: Monday, November 11, 2013 4:38 PM
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 at 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 at fidmail.com>
>> Sent: Nov 11, 2013 10:24 AM
>> To: rfi at 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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