So I've been reading about this Small Space antenna that is being sold as the TAK-Tenna. Really neat idea - Has a 30 inch boom and Spiral Coils on the ends. See a picture at http://www.taktenna.com/
Looks easy to build - Right ?
So I Built my version out of wood - Mine is very ugly as compared to the store bought one.
• 3 - Wooden sections - 1 1/2 in X 1/2 in X 8 ft - Cost 92 Cents each - Home Depot
• 1 - 100' Spool of Steel Guide/fence Wire - Cost - $7 - Home Depot
• 1 - 25 foot RG8 coax with PL259 - Radio Shack - Close Out - $5
• 2 Packages - Nuts/Bolts - $2 - Home Depot
• Total Material Cost: $16.76
The commercial version uses PVC and tie wraps, which would have been much easier.
Fab Time for my version was about 4 hours - Drilling Lots of Holes and feeding the wire in to make the Spiral Coils was most of the work.
However - Test wise it isn't bad I got it tuned up on 40 meters at about 8 feet off the ground and it has an SWR 1:2 to 1:5 from 7.30 to 7.175 MHZ. Also does ok on 15 meter - Tune up wise.
Bad news the performance is not Great - Signal pick up is several S units below my Dipole, but it does work.
From what I have read the Antenna has problems in that most of the performance is based on feedline radiation (See the links below).
I'm still testing and will upload a picture of my ugly version at some point
It was an interesting experiment and the Antenna fits into a small space 24 inch X 30 inch. Hey it works. If you have no space it might be worth $20 and a few hours of your time or If you aren't a Homebrewer Buy one.
If you make your own one point - I needed more wire than the 468/7.2 MHZ = 65 Feet Total or 32.5 Feet per side - I had to add wire after the fact. So I would make it about 33.5 per side.
Any thoughts ?
- Bill - KA6KBC - 73's
Antenna - Pictures: