EFHW HF antenna wire spool NVIS

[modified from the design by n9dmt] 

this is a portable reel to hold a long wire and a balun/unlun transformer. basically an Antenna kit.

here is a list of features and modifications i did:

• removed the screw feature that was hard to print
• removed the thru hole central pillar
• removed the internal mount for holding the wire and torroid
• added dimples on the outside to act as a finger reel without tools/stick
• added 2 holes for 8mm mounted banana socket for both ANT and “GND”
• added a bump to prevent the BNC connector from spinning
• 80%~ wider to accommodate 68ft of 18ga silicone wire 

the two halves are meant to be glued together after a brief testing. i prefer cyanoacetate glue (crazy glue), as my usual hot-glue isnt good against constant pressure like from the wound wire or the clip. to secure the end of the long wire against the tension from un-plugging itself you can easily weave it in and out in the outside holes of the reel!

the clip should be printed a little wider to easily snap on the reel about 3-5% more.

Material list:

1. one of each halves+wire clip
2. 2 banana socket + banana plug
3. a long of wire according to the calculated resonant length
4. BNC connector
5. Toroid 
6. a 100pF 1kV capacitor
7. some rope and carabineer 

using a 49:1 + 68ft (-6inch folded back) i get pretty good result on 28mhz, 21mhz, 14mhz and 7mhz. 

Pictures incoming in the near future.

-i am not the owner of the toroid winding diagram image