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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