Topband: Length of Beverages

Carl km1h at jeremy.mv.com
Mon Jul 28 11:49:34 EDT 2014


Thats where a simple active homebrew combiner could be helpful instead of 
wasting $600 on a fancy box. When they get down to $200 or someone else 
duplicates the performance at that price Id be interested.

Carl
KM1H

----- Original Message ----- 
From: "Yuri Blanarovich" <k3bu at optimum.net>
To: "Richard (Rick) Karlquist" <richard at karlquist.com>
Cc: "Mike Waters" <mikewate at gmail.com>; <topband at contesting.com>
Sent: Sunday, July 27, 2014 8:43 AM
Subject: Re: Topband: Length of Beverages


> It makes difference on "regular" ground.
> Once I put up "killer" 1200 ft Beverages on a location on the top of the 
> hill, with slightly sloping ground around. First night in the contest Inv 
> Vee was beating them. Sloping terrain and long wires were likely producing 
> low angles, way too low for propagation.
> For the next night I cut the wires to half, 600 ft and they came to live, 
> what a difference!
>
> Also at W8LRL QTH long phased JA Beverages compared to "regular" one were 
> hearing JAs while shorter one was "dead". At VE1ZZ lone single wire 
> Beverage, going down the hill and terminated in the SS hub cap in the salt 
> water was beating phased one on ground.
>
> Depends on propagation, angles, more flexibility we have, more adaptable 
> we are to peculiarities of conditions. On good, salty grounds verticals 
> are kings and using arrays allows to shape the pattern to maximize the 
> signals and suppress noise and interference.
>
> Yuri, K3BU.us
>
>
>
>
> On Sat, Jul 26, 2014 at 11:13 PM, Richard (Rick) Karlquist wrote:
>
> >
>>
>> On 7/26/2014 2:32 PM, Mike Waters wrote:
>>
>>> On my bucket list is a system for remotely changing the lengths of my 
>>> two
>>> 2-wire Beverages between 580 and ~800 feet long.
>>>
>>>
>>
>> I actually tried this and discovered that any wire beyond
>> 400 feet made no difference whatsoever.  This is because
>> I am on high conductivity ground.  YMMV.
>>
>> Rick N6RK
>> _________________
>> Topband Reflector Archives - http://www.contesting.com/_topband
>>
> _________________
> Topband Reflector Archives - http://www.contesting.com/_topband
>
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