Topband: ZS6BKW(G5RV) on 160m?

[Tom W8JI]

>
> The ZS6BKW is really a quite different antenna than a G5RV. On 40, 20, 18, 
> 12 and 10 meters, the feedpoint is close enough to 50 ohms to present a 
> good match when properly trimmed . The coax is matched so the length of 
> the coax is not important and losses are low ON THESE BANDS. >>>

It actually is very similar to a G5RV. It just has some length adjustments.

<<<
To be fair, the original G5RV was designed as a 20 meter antenna prima rily 
and it works only after a fashion on the other bands (as G3OIT found) due to 
losses in the unmatched coax, for the most part. With the ZS6BKW here, I 
switch from the coax to ladder line back to the shack at the feedpoint as 
G3OIT does on the unmatched bands (80, 30 and 15) . On 160, I short the 
ladder at the feedpoint and feed it through a matching network against a 
radial system.
>

The G5RV is actually pretty good on 80, 40, 20, and 12 meters.

Here is how I used a G5RV on 160. It would work with the ZS6BKW.

http://www.w8ji.com/g5rv_facts.htm

I used my G5RV on 160 phased against a 100 foot tower as a two element 
vertical array. I worked JT1 and lots of other good DX from a suburban 
Atlanta lot, just outside the city. It was a good antenna for a location 
where I could really only have one tower and a few wires.

73 Tom