Verticals for 30, 40, 80m
#21
(16-01-2018, 08:21 AM)VK4ADC Wrote: Wayne

"I ended up making an ally tube vertical 10M tall. The lower sections are double wall so it is self supporting but I will consider adding guys if wind sway gets too scary. I then added 12M of wire to the top that slopes down to a 5M mast on the corner of the block so I now have a sloping "inverted L."  The wire length is solely based on the distance available. I have an earth stake but no radials as yet but plan to add some in the next few days.

It is obviously a non-resonate length but the internal antenna tuner (more correctly a transmission line matcher) allows me to use it on all bands 80-6m, and with an external tuner, on 160M. "

Are you feeding the coax inner conductor to the base of the tube directly or via an UN-UN ??
If UN-UN then ratio ??


Doug
Sorry Doug, I should have mentioned the feed system. I am using a 4:1 UNUN made by Zero-Five antennas for their verticals and a commercial RF choke (not sure what breed, but its hefty) and there is no evidence of RF in the shack.

I now have eight radials all about 10M long.  The antenna is only a few meters away from our water bore and I am wondering if I should chuck a radial down the hole?

73

Wayne VK4WDM
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