[Laser] Wanted Laser's for VUCC Attempt
Zack Widup
w9sz.zack at gmail.com
Tue Mar 27 14:29:46 EDT 2012
Yes, but realistically I'm not going to Manitoba.
:-)
I will be stuck in the flatlands of Illinois. Almost all of my 10 GHz QSO's
outside of the 10 GHz Contest have been from a hill in EN50rl. I've been
there during some tropo openings that allowed QSO's up to 500 miles on 10
GHz with two watts. But there are no tropo openings at optical frequencies,
although some other strange propagation modes may take place (cloud
scatter?)
73, Zack W9SZ
On Tue, Mar 27, 2012 at 11:24 AM, Glenn Thomas <glennt at gbis.com> wrote:
> FWIW, it seems to me that in addition to the north/south squares that
> Zack points out, an additional 4 squares are possible in the east/west
> direction with path lengths less of than 100 miles. If one were to sit
> at the intersection of four squares at a higher latitude, the distance
> to the next grid squares to the east and west can be significantly less
> than 138 miles. This is because the width of grid squares (east-west
> direction) measured in miles becomes less as a function of increasing
> latitude. Specifically, the width of a grid square in statute miles as a
> function of latitude is approximately 138*asin(.0349*cos(latitude)).
> Consider an extreme example, if your foot were placed exactly on the
> north pole, you would be standing in no fewer than 180 different grid
> squares! (What color was that bear???)
>
> For a more practical example, consider operation from the place where
> EO00, EN09, DO90 and DN99 meet. Contacts with those four squares should
> be trivial. Along with the four additional north/south squares 69 miles
> away that Zack has pointed out (EO01, EN08, DO91 and DN98 in this case),
> the four next-closest east/west squares, EO10, EN19, DO80 and DN89, are
> all only 98 miles away.
>
> If you have a cooperative partner, getting 12 squares on any band is a
> matter of going as far north as you can and paying close attention to
> what mountains and which roads are where. The example I've given is
> somewhere in southern Manitoba. I've never been there but I understand
> that the landscape is pretty flat - not so good for microwave/optical
> propagation.
>
> Perhaps a vacation in beautiful Fairbanks AK, where there are lots of
> mountains and the east/west size of a grid square is only 52 miles,
> should be in your plans... ;-)
>
> 73 de Glenn WB6W
>
> On 3/27/2012 6:19 AM, Zack Widup wrote:
> > Hi Les,
> >
> > Why do you need 180 miles? If you can choose your locations carefully,
> > you can sit in a grid close to its corner and work north or south
> > across the next grid to the second one over maybe a 75 mile path. For
> > instance, I can operate in EM59xx and get the first four grids over a
> > few mile path, then work someone in EN51xa which would be 75 miles to
> > the north.
> >
> > Fortunately for me, there is a big hill in EM59xx.
> >
> > 10 GHz is much easier. I have 12 grids on 10 GHz right now.
> >
> > 73, Zack W9SZ
>
>
>
> ______________________________________________________________
> Laser mailing list
> Home: http://mailman.qth.net/mailman/listinfo/laser
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Laser at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
More information about the Laser
mailing list