Topband: 160M ant advice

[Robert Harmon]

Gene,

The cage design sounds very interesting.  I just ordered the book :-)

thanks Gene,
Bob
K6UJ




On 12/18/15 9:27 AM, Gene Smar wrote:
> Bob:
>   
>       I built my shunt feed wire cage based on the design in Jeff Bigg's K1ZM book "DXing on the Edge..."  I bought it from the ARRL bookstore but you might be able to find it on Amazon, etc.  I used two widely-spaced wires whereas he used three in a triangular form held off the side of his tower with PVC pipe.  I was surprised at how well it seems to work for me ( I always get through and receive good reports.)  Good luck.
>   
>   
> 73 de
> Gene Smar  AD3F
>   
>
>
>
> On 12/18/15, Robert Harmon wrote:
>
> Stan,
>
> With shunt feed I would gain the 18 foot mast with the yagis, the total
> overall height is 108 feet.
> I haven't really considered shunt feeding. I see your point of the
> wires with an L in proximity to other
> antennas. That was a worry I had with the 40 meter yagi and the L. I
> will look into shunt feeding. I have ON4UN's book, probably should
> start there to bone up. Any other resources to learn abut shunt feeding ?
> The top band archives probably has a lot of discussions about shunt
> feeding also.
>
> thanks Stan,
> Bob
> K6UJ
>
>
>
> On 12/18/15 1:36 AM, Stan Stockton wrote:
>> Bob,
>>
>> There is no reason I can think of to not shunt feed the tower as it is with either ground radials or elevated radials. An inverted L isn't as good as a vertical for DX and you would just be adding clutter and horizontal wires in proximity to your other antennas. Shunt feeding a tower is very, very simple.
>>
>> 73... Stan, K5GO
>>
>>> On Dec 17, 2015, at 8:06 PM, Robert Harmon k6uj at pacbell.net> wrote:
>>>
>>> I am planning an install of a 160M inverted L and would like critique from you top banders.
>>> I was originally planning a separate tower for 160 but my XYL has squashed the idea :-)
>>> My tower is 90 feet fully extended with a 18 foot mast currently used for a Force 12 WARC plus 10/15 beam
>>> on top and a N6BT DXU-32, 2EL 40 and 3EL 20 12 feet below.
>>> At the top of the top section I have a 10 foot fiberglass pole I plan to extend out to support the vertical, so it will be 10 feet away from the tower.
>>> I am thinking of feeding the vertical and having 4 elevated radials at the 14 foot level.
>>> So the vertical wire will about 76 feet long.
>>>
>>> I am wondering if I would be better lowering the feedpoint & radial tie ins down from 14 feet say to 8 feet and have more length in the vertical portion of the L or better to have the 14 feet elevation for the radials ?
>>>
>>> Also the horizontal leg of the L on top will be about 5 feet below the 40/20 yagi only 10 feet out from the tower,
>>> do you think this is OK as far as interaction between the yagi and the 160 L ? Anything else I should consider ?
>>> I have never had a decent 160 antenna, just hoping I can work something out with my existing situation
>>>
>>> thanks in advance,
>>>
>>> Bob
>>> K6UJ
>>>
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