Here are a couple of photos showing the tower base while being constructed. The first shows the 3.5 cu. yd hole with a ten foot post section driven to a depth of 13 feet. Surrounding this is the re-bar cage for reinforcing the pour as well as serving as the "Ufer Ground". Ufer grounds are essential in a concrete pour such as this. See this page for more information: http://www.psihq.com/iread/ufergrnd.htm . Unseen due to the depth are 4 ground rods, one for each corner driven flush to the bottom of the hole. All this was electrically bonded together and connected to the mounting plate base bolts seen in the second picture with a form. The start of the 9000 lb. concrete pour can be seen.
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These photos show the satellite antenna array for the LEO satellites. The antennas are home-brewed Texas Potato Masher II designs by K5OE, for 144 mhz and a smaller version for 435 mhz. K5OE, Amateur Radio Antennas Great little antennas! Rotors are old but venerable Alliance U-110's (one in AZ and one in EL configuration). Manual tracking is used along with the SatScape tracking prediction program. Satscape Homepage
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Amateur Radio Station KC9CS |
