[TowerTalk] 6 meter angle arrival for DX

[Chuck Dietz]

This was in QEX – May/June 2011:

"...in the July and August 2009 “World Above 50 MHz” QST column, Gene
Zimmerman, W3ZZ, comments on the work of Joe Kraft, CT1HZE, suggesting that
arrival angle probabilities for 6 m band sporadic-E are bimodal, with one
peak at ~5° and another at ~10° with very little below 3° or 4° or above
~13° or 14°.6, 7 Thus, arrival angles of 3° to 14° emerge as a range of
interest for 6 m sporadic-E operations. Also see my article, “Optimum
Height for an Elevated Communications Antenna,” in DUBUS magazine.8 While
different from HF in the specifics, the angle ranges of interest are
similar, and justify the range between 2° and 16°."

Chuck W5PR

On Fri, Nov 13, 2015 at 9:34 PM, Bill via TowerTalk <
towertalk at contesting.com> wrote:

> I'm currently doing the ground work for getting a decent sized 6  meter
> setup for my new QTH in KH6.
>
> I'll be using around a KW and have homebrewed some copycats of the  old KLM
> 7 Yagis for 6.
>
> My only problem is being a rookie on 6 is I really don't know  what arrival
> angles are most common for six meters for distances of greater than  2500
> miles, which is the minimum distance for 99% of all contacts from  KH6.
>
> Height recommendations are pretty useless since the terrain is  nowhere a
> normal terrain due to the extreme drop away from the tower site.   Even a
> combo of 20 over 5 produces enormous gains at 1 and 2  degrees.
>
> N6BV's terrrain analysis only provides angle info for HF.   Check the
> arrival angle on 10 meters for various places and then check 6
> meters..about the
> same, as his program wasn't meant to do VHF arrival angles in  conjunction
> with HFTA.
>
> I know no number will be THE correct one, but a ball park range of  the
> most common angles would be a big help.  I plan on giving as many  USA
> stations
> KH6 for the WAS as I possible can.  The same is true for JA  and hopefully
> some EU guys as well.
>
> Any help?
>
> Bill K4XS/KH7XS
>
>
>
>
>
>
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