Topband: Topband Digest, Vol 91, Issue 18

K3vw at aol.com K3vw at aol.com
Fri Jul 16 12:19:26 PDT 2010


To: Josh  Check out Ham Radio Magazine article on WB3GCG's Selectable  
wavelength Beverages back in July, 1986. It was also in ON4UN's 1st Edition of " 
 Low Band DXing "1988, page 119. Willy K3VW
 
In a message dated 7/16/2010 3:01:05 P.M. Eastern Daylight Time,  
topband-request at contesting.com writes:

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Today's Topics:

1. Re:  Beverages (Jon Zaimes AA1K)
2. 1923 Beverage ANT-SSB  transmission  (Bruce)


----------------------------------------------------------------------

Message:  1
Date: Fri, 16 Jul 2010 07:43:05 -0400
From: Jon Zaimes AA1K  <jz73 at verizon.net>
Subject: Re: Topband: Beverages
To: john battin  <jbattin at msn.com>, Top Band Reflector
<topband at contesting.com>
Message-ID:  <4C4045C9.5050905 at verizon.net>
Content-Type: text/plain;  charset=ISO-8859-1; format=flowed

Hi John,

Your note came just  in time! I canceled the real estate deal to extend 
my  Bevs!!!

Actually this past winter I was able to extend a "worthless"  broadside 
pair of 720-footers on Europe, spaced only 200 feet, to 950 feet  long 
and they really started to play. It's now my best Rx antenna to  Europe 
-- beating out a stagger pair of 750-footers and the original  stagger 
pair of 535-footers. There are of course high-angle times when the  
shorter ones are best.

Another broadside pair of 935-footers,  spaced only 175 feet, has been a 
killer to JA for several  years.

73/Jon AA1K



On 7/15/2010 07:14 AM, john battin  wrote:
> I put up the killer beverage to europe... two staggered 1500'  phased 
with two more spaced 5/8 wave.  It was useless ....  I  shortened them to about 
700 feet and it worked fine but not much better than  my reference phased 
pair or 580 footers. Eventually I removed the staggered  ones as they did 
nothing but improve f/b and did nothing for signal to noise.  I still use a 
pair of 1500 footers to Japan; a few times a year they are  better than shorter 
ones. I am a believer in the vertical angle issue.  Switching lengths is 
interesting if you were in a part of the world where  there were areas of 
interest at vastly different distances.
>
>  John
>
>    
>> Date: Thu, 15 Jul 2010 02:19:33  +0000
>> From: k3bu at optimum.net
>> To:  topband at contesting.com
>> Subject: Re: Topband:  Beverages
>>
>>      
>>>  k3bu at optimum.net wrote:
>>>         
>>>> I have seen situations when long Bev (1600') on a  sloping
>>>>          
>>>  terrain was worse to Eu than Inv Vee. When shortened to about
>>>  600' it was a "killer".
>>>         
>>>> Then long phased Bev at W8LRL were hearing JAs while  short
>>>>          
>>>  ones were "dead".
>>>         
>>>> Makes big difference in a  contest.
>>>>
>>>>
>>>>   
>>> This inspires me to a (perhaps  under-educated) pitch for
>>> exploration of
>>> a  novel antenna: An Adaptive Elevation Angle MEMS  Beverage.
>>>
>>>
>>> Seriously, I wonder  what challenges would be realized in trying
>>> to use  a
>>> set of mechanical relays to incrementally lengthen or  shorten a
>>> Beverage
>>> to sweep elevation angle,  albeit while distorting F/B and
>>> beamwidth....
>>>  I'd certainly purchase the journal that published such a  paper.
>>>
>>>
>>>
>>>
>>>  73,
>>>
>>> - Josh /  KF4YLM
>>>
>>>        
>>  This can be done by breaking say 1500 ft Beverage into 3 segments with 
two  relays inserted at 500 and 1000 ft points, switching between next wire 
segment  and termination resistance.
>>
>> Some pictures of W8LRL  installation are at
>>  http://www.teslaradio.org/w8lrl.htm
>> white posts support phased and  staggered Beverages. Also pictures of RX 
vertical 8  array.
>>
>> 73 Yuri K3BU.us
>>  _______________________________________________
>> UR RST IS ... ...  ..9 QSB QSB - hw? BK
>>      
>     
>  _______________________________________________
> UR RST IS ... ... ..9  QSB QSB - hw? BK
>
>     


------------------------------

Message: 2
Date: Fri, 16  Jul 2010 12:05:51 -0800
From: "Bruce"  <k1fz at myfairpoint.net>
Subject: Topband: 1923 Beverage ANT-SSB  transmission
To: <Topband at contesting.com>
Message-ID:  <9C05AB2EBAEE42188BAD21069FFD8F3C at BrucePC>
Content-Type:  text/plain;   charset="iso-8859-1"

Clarence Hansell Belfast  Maine log book excerpts.

>From a paragraph referred to as Summer  1923. "The wave antenna built for 
receiving European stations at Belfast  consist of two #10 copper wires each 
52,610 feet long (16.04 kilometers) run  parallel on the same cross arms at 
a spacing of 64 inches. (1.628 meters).  Their average height above the 
earth is about 18 feet. (5.5 meters) the wires  are transposed at frequent 
intervals."  

"The transmitter built at  Belfast for radio relaying is of the single 
sideband modulator and power  amplifier type and is capable of giving a 
continuous C.W. output of about 5  K.W. output on a wavelength of 1650 meters (182 
Kilocycles)."

We find  that Hansell used single sideband (with carrier) in the Summer of 
1923.   Shortly after when he converted to HF transmitting he encountered 
frequency  stability problems and went to a crystal frequency heterodyning 
direct  conversion of received station 5XX still on VLF.

Hansell was way ahead  of his  time.

Bruce-K1FZ



------------------------------

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