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Re: Topband: WD-1A wire

To: topband@contesting.com
Subject: Re: Topband: WD-1A wire
From: "Dave Blaschke, w5un" <w5un@wt.net>
Date: Sun, 07 Jun 2015 23:47:10 +0000
List-post: <topband@contesting.com">mailto:topband@contesting.com>
I've used WD-1A wire here for years for my Beverages, which are all over 600' long. The receiver preamp handles loss OK in the forward direction. In the reverse direction I use a W7IUV external preamp due to extra signal loss. This is no problem on 160 or 80 meters.
Be careful with this wire, as if the insulation gets scraped somewhere 
along the antenna the iron core will rust through and the copper wires 
can then open. This has happened to me on several occasions.
Dave, W5UN

On 6/7/2015 4:40 PM, K1FZ-Bruce wrote:
A lot are using it Roger,  The I squared R losses are low because 
signal currents levels are so low..
Especially for BOG antennas, the physical  strength often outweighs 
the loss.
I am using it for a 300 foot 2 wire switchable Beverage & works well.
For real long Beverages, maybe a better wire should be considered.
73
Bruce-K1FZ

www.qsl.net/k1fz/bogantennanotes.html


On Sun, 7 Jun 2015 15:55:59 +0000 (UTC), Roger Parsons via Topband wrote:
      I know that WD-1 and WD-1A wires are not very good for two wire 
transmission lines due to their high attenuation. I wonder however 
whether they are OK with the conductors strapped as Beverage wires? 
WD-1A has quite a few advantages for the bush where I run my antennas 
- it is strong, it is quite light, it is very nice and easy to run 
out, and it fits through electric fence insulators.
I presume that its poor performance as a balanced line is related to 
the copper wires twisting with the steel ones meaning that for some of 
the time current is passing through the steel wires due to skin 
effect. On the other hand I can't see how it can be worse than 
galvanised steel wire or electric fence wire.
73 Roger
VE3ZI
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