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@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@verizon.net>
Subject: Re: Topband: Beverages
To: john battin <jbattin@msn.com>, Top Band Reflector
<topband@contesting.com>
Message-ID: <4C4045C9.5050905@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@optimum.net
>> To: topband@contesting.com
>> Subject: Re: Topband: Beverages
>>
>>
>>> k3bu@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@myfairpoint.net>
Subject: Topband: 1923 Beverage ANT-SSB transmission
To: <Topband@contesting.com>
Message-ID: <9C05AB2EBAEE42188BAD21069FFD8F3C@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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End of Topband Digest, Vol 91, Issue 18
***************************************
_______________________________________________
UR RST IS ... ... ..9 QSB QSB - hw? BK
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