[TowerTalk] Fwd: Strange behavior

[Herbert Schoenbohm]

Nothing like check your radiation  pattern(s) with a good field strength 
meter or local ham on ground wave while talking to him on the phone for 
starters before you get carried away with propagation phenomenons.


Herb, KV4FZ


On 1/22/2017 1:25 PM, Hans Hammarquist via TowerTalk wrote:
>   Hi Carol,
>
> If I understand it right, you have good control over the directions your beams are pointing so no means can explain that they are pointing in the wrong direction, not even a North Seeking Plastic Owl. :)
>
> You can have variations due to different paths for the radio signals, something I believe is not that commonly known around the Ham population and probably is not that well understood around the science population either (and this is probably due to lack of interest for the phenomena. Time to study to get the Nobel Price).
>
>
> Just my little dime,
>
> Hans - N2JFS
>
>   
>
> -----Original Message-----
> From: Richard Solomon <dickw1ksz at gmail.com>
> To: towertalk <TowerTalk at contesting.com>
> Sent: Sun, Jan 22, 2017 11:56 am
> Subject: Re: [TowerTalk] Strange behavior
>
> How about using the Compass App
> on your SmartPhone ?
>
> 73, Dick, W1KSZ
>
> On Sun, Jan 22, 2017 at 8:59 AM, <john at kk9a.com> wrote:
>
>> I am trying to avoid the true north thread however I would verify that they
>> are indeed pointing 45 degrees when you beam Europe. A compass can be
>> inaccurate around a lot of metal or if not level and it is measuring
>> magnetic north. If you use Google earth you can pick an object 45 degrees
>> from your tower and see if you beam is pointing that direction. Since you
>> multiple towers and beams it is possible that something is skewing the
>> pattern or that you have skewed propagation under these poor conditions but
>> I would visually look at the direction one more time using a different
>> direction method.
>>
>> John KK9A
>>
>> To:     <towertalk at contesting.com>
>> Subject:        [TowerTalk] [SUSPECTED SPAM] Strange behavior
>> From:   "Carol Richards" <n2mm at comcast.net>
>> Date:   Fri, 20 Jan 2017 18:35:57 -0500
>>
>> Hello all,
>>
>> In late summer, I had some minor work done on my towers and antennas. I
>> used
>> a compass so that the beams were lined up correctly with N at 0 degrees and
>> NE at 45 degrees,  EU direction. All monoband yagis have not loosened up,
>> but that EU now peaks at due East on all three yagis, separate towers, The
>> other directions behave properly; N to JA, W to the Pacific etc. Can anyone
>> explain why the change? There is about 15 db difference in signals from EU
>> at 90 degrees and EU at 45 degrees?
>>
>> I understand that EU on 15m would be skewed at this point in the cycle, but
>> 40m and 20m?
>>
>>
>>
>> Carol
>>
>> _______________________________________________
>>
>>
>>
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