Topband: High noise with Rx antennae

[ZR]

So what does your car radio say to you set to a quiet spot at the top of the 
AM band?

Have you eliminated your own property by killing all power and run the K3 on 
a battery?

Carl
KM1H


----- Original Message ----- 
From: "Gary Smith" <Gary at ka1j.com>
To: <Topband at contesting.com>
Sent: Thursday, November 29, 2012 1:03 PM
Subject: Re: Topband: High noise with Rx antennae


> yes it is, although the quietest directions are to the N, NE & NW
> which would make those directions the worst if it were the rail
> lines.
>
> I'm finding that the Rx triangle has more noise than the 160 Inv-V
> and that doesn't make sense to me yet. I don't use a pre on the low
> bands & sometimes use an attenuator.
>
> Gary
> KA1J
>
>> Is that rail line electrified?
>>
>> Carl
>> KM1H
>>
>>
>> ----- Original Message ----- 
>> From: "Gary Smith" <Gary at ka1j.com>
>> To: <topband at contesting.com>
>> Sent: Thursday, November 29, 2012 11:52 AM
>> Subject: Topband: High noise with Rx antennae
>>
>>
>> > I'm hearing a lot of noise with my triangle array. I was hearing it
>> > close to the house so I relocated 100' away albeit 10-15 feet lower.
>> > Unfortunately I can not put it in a clearing and there are trees
>> > around it, I cut down several that were within 10' of the elements.
>> > I am using flooded coax and the snap on terminals. I replaced all
>> > the terminals but this did not change the problem.
>> >
>> > I am getting directivity and to the south along the road I hear an
>> > increased background noise where home electronics may be a source of
>> > noise. What I hear sounds like electrical noise, nothing digital
>> > sounding but moving the antenna didn't help much. By necessity, the
>> > transmit antenna is 75' away and some of the  130' radials on the
>> > ground run fairly close to the Rx array. I find the inv-l to be
>> > sometimes less noisy but the triangle will often pick up a signal
>> > the vertical does not (albeit with greater background noise).
>> >
>> > I'm using a K3 with sub Rx and the AF control is rarely turned more
>> > than 15 degrees. Playing with Rf levels, AGC, noise blanker, noise
>> > reduction seems to help overall and Sometimes I run with no AGC at
>> > times too but it doesn't deal with the high background noise. I'm
>> > wondering if shortening the elements would have a positive effect on
>> > reducing the noise level?
>> >
>> > Here is a view of the QTH. My house is the last one, at the end of
>> > the road & next to the rail line. I am sandwiched between two state
>> > parks. Other than Amtrak being beside the house and the people on
>> > the road south of me, there is no other house or signal generation
>> > within a mile. http://tinyurl.com/cy7zv7h
>> >
>> > Thanks for any suggestions.
>> >
>> > Gary
>> > KA1J
>> > _______________________________________________
>> > Topband reflector - topband at contesting.com
>> >
>> >
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>> > 11/29/12
>> >
>>
>
>
>
> _______________________________________________
> Topband reflector - topband at contesting.com
>
>
> -----
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