Re: P3 as a RFI/QRN tracking device

Posted by Bill Hammond on
URL: http://elecraft.85.s1.nabble.com/P3-as-a-RFI-QRN-tracking-device-tp7136429p7138398.html

Good guess Vic,
I finally ran this down to the electronic dish washer.   It has a two hour wash cycle  it is a Bosch model SHX68P05UC/58.

http://www.bosch-home.com/us/SHX68P05UC.html

It uses some pulsing to control motor functions.  As pointed out by Alan (N1AL) they must use pulse control with a duration of 1/ 10,000 sec to create a signal with 10KHZ nulls.   Alan also pointed out that a hash filter may be needed and suggested K9YC's very informative web site for hash control:
http://www.audiosystemsgroup.com/K9YC/K9YC.htm.

The point of the post was to mention how useful the P3 is for running down these annoying intruders in our spectrum and to solicit others experiences.  The P3 has become much more of a tool for me than I ever expected, far exceeding explications.  With  more improvements and VGA output on the way I see an even greater use for the P3 as test gear as well as an operating aid.  As an operating aid, I think I notice shifting operating methods in DX pile-ups because of it as well.

73 and HNY,
Bill Hammond-AK5X
[hidden email]
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K3 #69
P3 #817
KPA500 # 149
K2/100 #4637
K1 #2033
KX1 #1023
T1




On Dec 29, 2011, at 7:43 PM, Vic K2VCO wrote:

> It lasts for two hours... some kind of video recorder?
>
> On 12/29/2011 10:35 AM, Bill Hammond wrote:
>> In the below link please find a screen shot (Flickr) of the P3 display as well as a hint as to what it is.  I was never able to run down the noise before I got the P3. I wonder if others have used the P3 to chase down interference?
>>
>> I haven't named the offending device as a brain tickle :)
>>
>> http://www.flickr.com/photos/ak5x/6595335923/in/photostream
>>
>> 73,
>> Bill
>> AK5X
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> --
> Vic, K2VCO
> Fresno CA
> http://www.qsl.net/k2vco/
>
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