[TenTec] Open wire line

[Bwana Bob]

Just think how strong his signal would have been if he had installed it 
the right way!

                 73,

                 Bob WB2VUF

On 2/13/2013 3:31 PM, Bry Carling wrote:
> I worked a guy the other day who was using 300 ohm TV twinlead as a transmitting
> feedline to a 70 foot long dipole. The feedline was buried underground,
> and it was also running up taoed to a metal mast to the center of the dipole.
> All kinds of things that break the "rules of ladderline and hamdom."
>
> I was astonished at what a great signal this guy had!
> As Chuck Berry sang: "It goes to show you never can tell."
>
> YMMV
> 73 de AF4K - Bry
> Sanford, FL
>
> On 12 Feb 2013 at 17:14, Edward Feustel wrote:
>
>> I have used the open wire and open wire antennas that TrueLadderLine
>> supplies. Formerly it was distributed by W7FY. The antenna is
>> supported
>> by trees at each end.  A rope attached to one end of the antenna
>> goes
>> over the tree.  A rope over the other tree is attached to a pulley.
>> A
>> rope attached to the antenna goes through the pulley goes to a hefty
>> counter weight.
>>
>> I found that the open wire line worked well, but my 210 foot doublet
>> that they had supplied kept breaking at the center insulator. The
>> strain
>> relief simply was not enough for my doublet and the 125 foot of
>> Dacron
>> line used to hold the antenna up.
>>
>> I replaced the horizontal wire with number 10 copperweld and the
>> center
>> insulator with a ceramic one. A 30 pound plastic canister of cat
>> litter
>> serves as a counter weight but it is not really heavy enough.
>>
>> Since I replaced the horizontal parts, I have not had any problems
>> with
>> winds or ice.
>>
>> Ed, N5EI
>>
>> On 2/11/2013 1:16 PM, Rick - DJ0IP / NJ0IP wrote:
>>> Well I think the "true ladderline" looks pretty big and bulky and
>> ugly and
>>> subject to catching too much wind.
>>>
>>> It's very easy to build your own ladderline if you have the right
>> spreaders.
>>> IMO, the very best there is, and nothing else come even close:
>>> http://www.hfparts.com/eng/products.php
>>>    
>>> You can see where I used the smallest ones in the pictures of my
>> shack in
>>> OKC, here: http://www.dj0ip.de/my-station/oklahoma-2010/
>>> Using the small set as I used here, you get about 450 Ohms.
>>> Longer spreaders can give you 600 Ohms or even more.
>>> Take your pick. They come in several sizes.
>>>
>>> Outside the shack I spaced the spreaders about 1 ft. apart.
>>> Inside the shack I spaced them about 6" apart.
>>>
>>> Although they slip right onto the wires quite easily, they don't
>> slip off.
>>> Unfortunately I don't think they have a US distributor.
>>> You'll have to order from Germany.
>>>
>>> 73
>>> Rick, DJ0IP
>>>
>>>
>>> -----Original Message-----
>>> From: TenTec [mailto:tentec-bounces at contesting.com] On Behalf Of
>> Andrew
>>> Flessner
>>> Sent: Sunday, February 10, 2013 7:50 PM
>>> To: tentec at contesting.com
>>> Subject: [TenTec] Open wire line
>>>
>>> When I considered what I could build for a single multiband
>> antenna that
>>> would fit on the apartment roof and reading as many sources of
>> info I could,
>>> including Maxwell, W2DU, I made a 132' doublet fed with 450 ladder
>> line. I
>>> later changed it to open wire with 4" spacing. It works very well
>> on 80-6
>>> meters, tuned with my 238 tuner. I do use a Balun Designs 4:1
>> "tuner balun"
>>> just outside the house with 10 ft of RG-213.
>>>
>>> Here are 3 sources for open wire line, there may be others.  I
>> built the
>>> first because I had most of the parts.
>>>    
>>>    I think the True Ladder Line product probably makes the most
>> sense based on
>>> price/effort, etc.
>>>     
>>>    Andy K9ARM
>>>     
>>>    http://www.youtube.com/watch?v=FKGB6qkXs
>>>     
>>>    http://www.trueladderline.com/
>>>    
>>> http://www.73cnc.com/product_p/ls100.htm
>>> _______________________________________________
>>> TenTec mailing list
>>> TenTec at contesting.com
>>> http://lists.contesting.com/mailman/listinfo/tentec
>>>
>>>
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>>
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>
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