Hi Herb and all,
That is true - if you are not going for a vertically polarized Rhombic where
"only" the center support structures need to be tall. However that calls for
a very good ground system, not only below the antenna but several
wavelengths away. A typical seaside antenna?
73
Len SM7BIC
-----Ursprungligt meddelande-----
Från: Topband [mailto:topband-bounces@contesting.com] För Herb Schoenbohm
Skickat: den 26 juli 2013 17:56
Till: topband@contesting.com
Ämne: Re: Topband: Spam:*******, 160M Rhombics
Tim, A Rhombic for 160 meters would need to be at least 250 feet high on all
four support structures to avoid it being a big cloud warmer. Plus having 2
wavelengths on each leg makes this taking up a an extraordinary amount of
real estate. The other drawback is that it only one direction and it is
easier getting the gain in all directions by what you put on the desk. A
transmitting 4 square or 8 circle array gives you more plus switchable
directivity.
Herb Schoenbohm, KV4FZ
On 7/26/2013 11:07 AM, Shoppa, Tim wrote:
> Anybody on this list have a Rhombic for 160M?
>
> W1AW used to use one for bulletins and code practice on 160M but I
> think it came down years ago (1989?)
>
> I seem to recall pics in CQ of a big California desert DX'er who had what
was essentially a radial array of rhombics for maybe 160M or 80M.
>
>
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