Did you listen on a receiver when you where in the new house how about qrm
this 60 or 70 houses can make to you :o(
on4ma
----- Original Message -----
From: "Pat Barthelow" <aa6eg@hotmail.com>
To: <towertalk@contesting.com>
Sent: Thursday, August 03, 2006 12:17 AM
Subject: [TowerTalk] RFI Radius vs Ant Height
> Its been a very long time since I ran an HF KW from a residence. At a new
> QTH, I am contemplating doing so, using a yagi on a tower, say at 60 ft.
I
> am now at a fairly dense subdivision, shown here on a google map.
> See:
>
> Click on:
>
http://maps.google.com/maps?f=q&hl=en&q=Rocklin+CA&ie=UTF8&ll=38.780237,-121
.260095&spn=0.004023,0.010815&t=h&om=1
>
>
> I am in the house near the center of the aerial photo; bounded by Lincoln
> Ave to the West, Springview Drive to the East, South Whitney Blvd to the
> North, and Glacier Drive to the South.
>
> The house has a race track-shaped blue color, swimming pool in the back
> yard. Roughly center of the photo. As you can see, an arbitrary radius
> circle of say 500 ft, ecompasses a large number of houses, perhaps 60 or
70.
>
> Question is:
> What has others experience been while running KW level HF stations, as to
> typical or maximum distances from your station tower/antenna, to homes
> experiencing objectionable RFI to various home electronics. If say, 500
> feet, in my case I may irritate 60 or 70 households. If the RFI affected
> radius is larger, I am in even more trouble with neighbors..
> Raising the antenna from, (small multiband yagi) say, a modest 40 ft to,
> say 70 feet... will that ameliorate the neighborhood RFI very much for an
> HF KW?
>
> Maybe I should think towards building a club/Public Service/Contest
oriented
> station at a location near, but out of subdivision
interiors.....OR...Going
> QRP.....
>
> Tnx
>
> 73, DX, de Pat AA6EG aa6eg@hotmail.com;
> Skype: Sparky599
>
>
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