[Hi-zreceivingarraydiscussions] Array (4sq) not working properly

[f6bki at orange.fr]

Hi Randy , is your TX antenna  well detuned ?
73
Jacques F6BKI

-----Message d'origine----- 
From: Randy Lake
Sent: Tuesday, September 18, 2012 12:30 PM
To: Hi-Z Receiving Array Discussions
Subject: Re: [Hi-zreceivingarraydiscussions] Array (4sq) not working 
properly

Hi Roger. I am using the original preamps. They were tested last year by
Lee and said to be ok.
I just went out to measure the V at the antenna term and ground and they
were all the same. 0volts. The LED's are all on.


On Tue, Sep 18, 2012 at 7:51 AM, Roger D Johnson <n1rj at roadrunner.com>wrote:

> Hi Randy....
>
> The grounds should make very little difference in this array due to the
> high impedance
> preamps. What preamps are you using? I would measure the voltage from the
> preamp
> antenna terminal to ground. They should all be the same at about 5 volts.
>
> 73, Roger
>
>
> On 9/18/2012 6:42 AM, Randy Lake wrote:
>
>> Good morning.
>> I am trying to get an old 4sq setup working finally with not much luck. I
>> think it may have something to do with my ground or soil type.I can 
>> barely
>> get a 2 ft ground rod in without hitting rock.
>> I just moved the array to a more level area. Slopes maybe 1-2 ft in the
>> 80ft distance.
>> I am using 19' elements (old 20m tapered elements). They are mounted to
>> angle iron driven into the ground with 1 1/4 pvc attached to that then 
>> the
>> element mounted inside the PVC with the element held about 8in above the
>> angle iron inside the PVC. The ground rod is next to the angle iron.
>> The relays in the controller all work correctly.
>> The LED's are all on at each amp.
>> The delay lines and element feed lines are all factory cut.
>> The feed line feeding the array is tested as okay.
>> I am also using a Hi-Z preamp out at the array and a 75-50 ohm on the
>> feedline in the shack.
>>
>> Issues:
>> The noise level does not change much at all compared to the TX antenna.
>> directivity is minimal, barely noticeable.
>>
>> I am thinking I may remove the preamp and am considering adding 
>> additional
>> ground rods or radials at each vertical.
>>
>> Any thoughts or comments ?
>>
>> Randy N1KWF
>>
>>
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-- 
Randy Lake N1KWF
73 Gunn Rd.
Keene,NH
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