ALASKA 6M BEACONS: AL7QY -- 50.051 MHz - 45w OMNI -- Nome, AP74gm NL7Z -- 50.063.3 MHz - 25w OMNI -- Wasilla, BP51 KL7/KG0VL -- 50.065 MHz - 100w OMNI - Circle, BP75xw SOLAR FLUX: WM7D Solar Resource Page: http://www.wm7d.net/hamradio/solar/index.shtml Dominion Radio Astrophysical Observatory January 14, 2007 Update - 6m/222/432 Antennas are installed on the 30-foot tower
Click to see larger image.
December 2006 Update:
Although my original plan was to stack two 3-element 6m yagis above the HF beam on the
50-foot tower, I have decided that 15-feet of mast above the tower is too much exposure
to the wind (and local aircraft landing pattern). Instead I will mount a single 6m yagi
five foot above the HF yagi with an 11-element UHF yagi and two 11-element 222-MHz yagis
mounted on a crossboom eight foot above the HF beam. The 222 & 432 antennas will mounted
in vertical polarity. Antennas will have full azimuth rotation using a Ham-IV.
Then a second 6m yagi may be side-mounted to the tower five feet below the HF beam and
pointed toward the west coast (az = 120 degrees). A switching matrix allowing separate
feedlines for both 6m yagis or combined for stacking can be used (see figure, below).
This is acceptable since most 6m DX originates from this direction. I can still rotate
the upper 6m yagi and use it alone for other directions.
October 2006 Update:
We have poured the concrete for both towers (eme & HF/6m) and will begin assembly soon.
The "HF/6m/1.25m/70cm" tower will use a tilt-over base so that the tower and antennas may be
assembled at ground level. The tower will be anchored to the house with a stand-off bracket.
We will contract the boom truck to raise the tower when it is completed.
Here is a diagram of the proposed tower layout (version-6):
I have been active in the past running my FT-847 with 100w to a single 6m yagi on a 21-foot pole.
Several states, Canadian provinces, and Japan have been worked.
I have tried meteor scatter on 6m SSB making a single contact to Sitka, Alaska at 619-miles.
I am interested in trying more 6m MS using WSJT.
I am also interested in 6m EME, but that will have to wait until I can put up a large yagi
on a separate tower and build an 8877 amplifier.
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