Posts Tagged ‘photography’

K6MM’s No Excuses 160m Vertical Antenna

Photograph 1 depicts our first attempt at helically winding 97 feet 1 inch of AWG#14 wire on 2 inch PVC SCH40 before re-thinking our strategy. I opted for removing the long screw driver on the wire spool and approached our problem like taping a piece of pipe. I maintained upward and downward tension using the spool.

Photograph 2 facilitated third person in this operation because handling a 10-foot piece of PVC is difficult to balance while winding.

Photograph 3 demonstrates our solution in addition eight inch lengths of halved duct tape at every 12th or so wind. We found taping at this interval suitable enough to maintain adequate tension. I attempted, to the best of my ability, half inch spacing between winds however I’m not satisfied with the quality of my work. Therefore, the next step in our project, includes adjusting each wind accordingly.

Photograph 4 illustrates the end result of three hours of labor. My plan is to replace the spade located at the binding post while spacing each wind according to K6MM’s instructions. We divided each each section by the total length that is 256 feet 5 inches of wire equaling an average of 85 feet per section. Additionally, I’m purchasing alligator clips for each section because I’m intending to deploy the antenna in the portable mode.

Believe in your signal!

Shell Beach CM95 And 144 MHz Tape Measure Beam



Fred, KI6QDH loaned his 144MHz Tape Measure Beam for field testing here in Shell Beach this afternoon. My location is ideal for pushing antenna performance issues at near zero feet above sea level to include geography conundrums. I found maintaining line-of-sight with our local repeater was problematic. Additionally, we shifted our frequency to simplex 145.500 and Fred’s signal was full quiet however he did not hear my transmission.

I experimented with an 1/8th vertical and the 3-element beam neither antenna produced dissimilar results. Both, in fact, performed poorly between .05 mW and 5-watts into our local repeater. The next antenna adventure at 144 MHz while walking Radio Dawg includes operating in the direction of Avila Beach beaming south of Shell Beach.

Project instructions are available from W6AB, Satellite Amateur Radio Club as a download portable document file.

73 from the shackadelic on the beach.


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