[Moon-net] 9cm Activity WE

[Charlie Kahwagi]

Hi everyone, 

I was only on for the 1st pass,

 

Worked,  

Sked:  W5LUA, (heard him 53 in SSB) ,  VE6TA (#), 

Random: G3LTF, LX1DB, OKIKIR

 

On sked , Did not hear any of,  WW2R  and PA0BAT


Unfortunately I also missed DL4MEA and OK1CA whom I have worked before.

 

My #’s tally on 9cm is now 7 with only WW2R and WA5DGO  the only stations
not worked  with which I currently have a common window.

 

 

Thanks very much to Peter G3LTF  for the effort in organizing the WE
activity and for organizing the skeds.

I think this should become an annual WE event as there seems to be more and
more interest in this wonderful band.

 

Of interest was the wide “spread / smear”  on signals in the morning  with
heavy cloud cover at my QTH  for the NA  window.

In the evening for my Eu window signals did not exhibit any smear and there
was NO cloud cover at all.

Like Grant VE6TA, I too am interested in people’s thoughts

.Does rain/water
cause a spread (or scattering) on signals?... 

 

FYI :   I have now had a good chance to compare different feeds on this
band
..  Screw polarizer,  Square septum with choke flange and RA3AQ feed.

The scaled RA3AQ is producing far better efficiency in my 3.7m  dish with an
f/d of 0.4.  then any of the others.  I have experienced the same results on
13, and 6 cm  also.

 

 

Ed KL7UW  asks what a 40 -80 W signal would be like on a 5m dish ?


.Ed in
answer:  If optimized then your signal with 80W would be very strong at my
end!  

I believe G3LTF runs ~40 W into a 6m dish and he is VERY LOUD.  I could
knock off 5dB from his signal  and he would still be an easy copy!  With
100W at the feed and a 5m dish you are in Al’s league!. W5LUA’s SSB signal
in the speaker almost drew a gasp of astonishment from a visiting operator
in my shack on the WE.

 

By the way, for those that have a couple of the Toshiba amps I have combined
2 for 110 W output using simple splitter and combiner networks.  The
combiner is simple ¼ wL transformer on Teflon board.  The Toshiba amps have
isolators on the output so I have “gotten away” with such a simple scheme.
I have artwork on my website www.vk3nx.com <http://www.vk3nx.com/>  .  I
have now used this amp for several hours of continuous operation on multiple
occasions and can report no failures to date  (I hope it continues now that
I have stated this!).

 

For ANYONE setting up a permanent dish installation for uW EME use PLEASE do
so with a window to VK!  It’s lonely down-under on the microwave bands at
present but I am active on ALL bands to 10 GHz
.   It’s a pity that I can’t
get windows with some of the other operators.

In saying this I plan to raise my dish so I can have a longer window in the
future to NA.  At the moment it is restricted to >~9 degrees
and <86 degrees
azimuth.  My window to Eu is unobstructed down to 0 degrees.  

 

 

Thanks again everyone for a fun WE on 9cm.

I am happy to try any time I am available for skeds  and I will leave the
9cm setup insitu for another week if anyone is interested in skeds.

 

73

Charlie  VK3NX