[600MRG] My local noise - more info...

[William E. Isakson]

pardon reintroduction of noise canceler. I see now in the thread that you
guys already thought of that.

--------


Bill Isakson
Roseburg, Oregon USA
bill.isakson at gmail.com




On Sun, Sep 22, 2013 at 5:04 PM, William E. Isakson
<bill.isakson at gmail.com>wrote:

> Ken, Your low 50 foot wire, while perpendicular to the power lines is not
> really orthogonal to it.  To be orthogonal the end needs to point right at
> it, that is, it could be up at the same height as the wire and
> perpendicular, or it could be perpendicular and sloping so that the end
> points at it.   Even at that, you are, as you said, still in bed with it
> because orthogonal things still get some crossover, but that would minimize
> it.  The only other thing you could also do is set up a second voltage
> probe antenna a distance from the first one, or better, use two verticals
> on a line perpendicular to the voltage wire, and use something like the MFJ
> noise canceler.  However, that is still limiting in that you would
> definitely not be able to hear in the direction of the wire.   Still a
> rotating inclined plane though.
> Bill
>
> --------
>
>
> Bill Isakson
> Roseburg, Oregon USA
> bill.isakson at gmail.com
>
>
>
>
> On Sat, Sep 21, 2013 at 9:33 PM, Kenneth G. Gordon <
> kgordon2006 at frontier.com> wrote:
>
>> On 22 Sep 2013 at 2:41, Kenneth G. Gordon wrote:
>>
>> > OK, Gents, you can easily hear my local noise problem here:
>> >
>> > http://www.youtube.com/watch?v=xN0rpTKrK_U
>>
>> Much of that noise comes from a 13.6 KV power line that runs right down
>> are
>> alley, parallel to the rear edge of our property, and directly east of
>> me. It is
>> also higher than anything else on our property except a large old pine
>> tree
>> that is around 100 feet tall, and whose top is less than 10 feet from the
>> power-line.
>>
>> My short, 50', low wire is perpendicular to the power line.
>>
>> Personally, I think I am pretty much screwed here for listening.
>>
>> I think the only luck I am going to have is to take one or more of my
>> receivers, one or more of my loops, and 5000' of wire and a 600 ohm
>> resistor
>> to make a Beverage out of, and head out into the boonies.
>>
>> Also, I began using Spectran and another piece of software whose name I
>> cannot now recall with a BC-453 and a laptop many years ago.
>>
>> I like what the software does for receiving, but even that can't really
>> help the
>> noise problem here very much.
>>
>> Also, in order to receive anything even as "quiet" as you can hear on the
>> youtube video, I have to turn off many of the local noise-makers, which
>> include our Bosch dishwasher, our Fisher and Paykell clothes washer (which
>> outputs a wobbly signal exactly on 500 Khz), all of the computers in the
>> house, the computer-monitor in my shack (which also outputs an interfering
>> signal in the 500 KHz range), the TV set, and ad infinitum, other junk.
>>
>> I took that youtube video by flashlight.
>>
>> During normal ham radio operations in my shack on 80 meters, the local
>> noise level normally sits at S-9 constantly.
>>
>> In order to get any quietness, the entire neighborhood must experience a
>> total power outage, and that only lasts an hour, at most, around here.
>>
>> Not fun, but it used to be much WORSE.... :-(
>>
>> Ken W7EKB
>>
>>
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>
>