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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>
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