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 KL7J's HF Propagation page. SOLAR FLUX: WM7D Solar Resource Page: http://www.wm7d.net/hamradio/solar/index.shtml Dominion Radio Astrophysical Observatory AURORAL ACTIVITY: Aurora from NOAA POES Satellite: http://www.swpc.noaa.gov/pmap/index.html Ovation Aurora Forecast June 2011 Update: The 6-element 6m yagis was installed, June 21, 2011. Here are some photos:
- Side view looking NE
- the lower bushing of two: permits mast to rotate free
- View thru the small spruce trees; some will be removed under the antenna
- Full view showing mast supported by 4x4x10 foot post
- View with antenna pointed az=115 to US West Coast; tower#2 in background
- view from roof top of the house looking west; ant az=115
- View from antenna location toward az=060; Moonrise is 040 on maximum +declination
- View from az=110 (shows tower #2 at end of the house)
- View from az=280 (shows existing 20-foot mast)
- View from az=330 (Moonset direction at max. +dec.)
April 2011 Update:
Thanks to a kind donation of a 12w/1100w sspa for 6m, I am proceeding with installation of 6m EME.
Thanks for cash contributions from Kerry, G8VR and Fred, G4BWP which went toward acquiring 75-feet of
LMR-600 feedline and the antenna.
I've ordered a HP 226519-001 50-volt, 50-amp switching power supply from e-bay for $30.98 (including shipping).
KL7FZ has several 49-MHz KLM 7LB log-periodic cell 7-element yagis that can be moved up to 50.1 MHz.
I ordered one from him (they were for a state-run meteor scatter network and he has several
new-in-box antennas). I have two sections of 7/8 Heliax cable to provide a 90-foot feedline
but will need about 50-foot LMR-600 to complete the run. Initially, I am going to mount the 30-foot
long yagi on a guyed Rohn push-up mast at about 22-feet without a rotator. I will provide cords off
both ends of the 30-foot boom for steering. The antenna will be horizontal and fixed elevation on the horizon.
I will try operation with the preamp in the shack but the TR relay and preamp may get moved to the antenna.
I have decided to modify the antenna to a six-element yagi design offered by Mike, K6MYC. This will eliminate
one of the log-periodic driven elements Mike has dubbed the design as 6M6UW. The yagi will exhibit 13.1 dBi
gain with 21-dB F/B ratio on a 30-foot boom. This is close to the performance of the M2 6M7JHV.
Eventually, as funds permit, I plan that the antenna will have azimuth and elevation rotation and be mounted on a 27-foot
tower. Location of the 6m antenna will be at one end of my 80/40m inverted-vee dipole. I have an existing 20-foot
aluminum mast for tying off the end of the dipole in this location (see photos):
2010 Update
I have a new Elecraft K3/10 which runs 8w on 6m. An ARR P50VDG 6m Preamp was added for improved Receiving on 6m.
July 2010 I bought a Mirage A1015G amplifier which outputs 125w with drive from the K3/10. The lower 6m yagi is not loading
so unusable and will be removed. The upper 6m yagi works well.
November 25, 2008 Update
HF triband yagi, two stacked 6m yagis, 222 and 432 antennas installed on the extended 50-foot tower. All antennas were
installed with the tower layed over to ground, and later raised with a boom-truck. Coax cables were run to the
6m yagis, HF yagi, and 432 yagi. Later plans are to run 7/8-inch Heliax to the 222 and 432 antennas
(selected with a coax relay).
January 14, 2007 Update
We decided to temporarly install a 6m yagi, 432 yagi and two 222 yagis on 30-foot of tower. This will be increased
to 50-feet with the HF yagi and second 6m yagi being installed.
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