NON HAM PROJECTS
- 42m tower goes high
- Welding tower
- BLF188XR Amplifier
- BLF188XR first test
- HF autotune linear GU84
- Station video
- CNC-Plasma cutter video
- OH8LQ QTH panorama
- QTH panorama 2
- Bird view of the 80 m yagi
- Plasma cutting table and THC
- Plasma cutting THC test
- Dropping ice I
- Dropping ice II
- CNC milling machine
- Tower works 29.8.2018
2 el 80 M YAGI
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2 el yagi For 80 m band
The Yagi is home made. Element shortened with coil and
capasitance hat. Total element length is about 26 m.
Coil is turned over the fiber class tube with 2 mm Cu wire.
Coated by shrink tube. Capasitance hat is assembled just end
point of the coil.
Element tip is 6 m long fishing rod, inside of the rod is 2 mm aluminum mig
Element support ropes are Aramid rope, light and proof!
Here is used 4 mm Aramid rope
Middle support (old)
Tuning box! It's made possible work whole band 3,5 to 3,8 MHz.
Both elements needs own box.
Inside of the box is coils and relays. At the driver element box
including "hair-pin" match coil for impedance matching 20 ohms to 50 ohms!
The tuning box replacing at 40 meter. Niko 5-year looking around neighborhood.
At winter 2010-2011 antenna need repair after ice storm.
One element was broken, I made some improvements to the mechanical structure.
Element span support has been improved.
Brave climber Esa OH8KTN going icy pole