I use 450 ohm window line in upstate New York and it's done just fine
through 10 winters here.
You don't need to slope the ends - performance is independent of how
quickly you bring the wire ends down to ground.
If you have the inkling, there's no reason not to homebrew the
matching circuit and there are several references that provide the
info, including ON4UN's book and online/Google.
Barry N1EU
On Wed, Nov 9, 2011 at 5:17 PM, W0MU Mike Fatchett <w0mu@w0mu.com> wrote:
> Great feedback! I can see how the heavy 450 ohm stuff could easily ice
> up and become very heavy! You guys keep all that ice back east!
>
> Mike W0MU
>
> J6M CQ WW DX CW Contest 2011
> J6/W0MU November 21 - December 1 2011
> W0MU-1 CC Cluster w0mu.net
>
>
> On 11/9/2011 7:28 AM, Jeff Woods wrote:
>> One cautionary note on using window line for beverages:
>>
>>
>> I tried window line last year, unsuccessfully, for a 2-wire bi-directional
>> beverage. While the electrical performance was satisfactory, the increased
>> wind load area of the ladder line made it impossible to keep operational.
>> Initially, it broke free from the termination and feed points. After
>> several rounds of improvements on the connections, eventually the line
>> itself broke. This was the good stuff, too - heavier gauge stranded wire.
>>
>>
>> I'm out in the open plains of Iowa where the winds are strong and steady and
>> the ice/snow load adds to the problem. My normal beverages using 17 ga.
>> aluminum electric fence wire occasionally break, but it's infrequent enough
>> to be tolerable. The window line beverage needed to be repaired nearly
>> every week until it was decommissioned for good. In a more benign
>> environment this type of construction can work.
>>
>>
>> 73,
>> Jeff - W0ODS
>>
>>
>>
>>
>>> ________________________________
>>> From: "wa3mej@comcast.net"<wa3mej@comcast.net>
>>> To: topband@contesting.com
>>> Sent: Tuesday, November 8, 2011 2:56 PM
>>> Subject: Topband: 160M Beverage antenna help requested
>>>
>>>
>>>
>>> Good afternoon to ALL!
>>>
>>>
>>>
>>> I am getting ready to put up a beverage for top band. I have decided that
>>> I want to put up a two wire system
>>>
>>> using window line because of the ease of assembly. I am not sure if I will
>>> use it in the null steering mode
>>>
>>> or just switch from front to back. I will decide that after I get it up.
>>>
>>>
>>>
>> _______________________________________________
>> UR RST IS ... ... ..9 QSB QSB - hw? BK
> _______________________________________________
> UR RST IS ... ... ..9 QSB QSB - hw? BK
>
_______________________________________________
UR RST IS ... ... ..9 QSB QSB - hw? BK
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