After using my light weight SOTA linked dipole that covers 15, 20, 30 and 40 meters, read about it here, I decided to make a heavy duty (HD) version of the same dipole. In practice I would rather use an End Fed on a summit vice a dipole however, the HD linked dipole would come in handy at a base camp and I wanted to have an antenna capable of more than a couple of watts.
I used 18 gage wire (vice 26 gage teflon coated wire), 4 mm (vice 2 mm) connectors and a BNC connector for the center. Here are the measurements I used. Your measurements/requirements will vary depending on the portion of the band you want it resonate, mine is cut for the CW QRP portion of each band.
|Linked Dipole measurements|
|The ends of the 20 meter section|
|With the connectors|
|The 30 meter section with connectors|
|20 and 30 meter section tied together|
|Progress thus far (I keep the antenna wrapped up as I go as it is easier to work with this way)|
The video below demonstrates how I wrap my antennas. I am using an end fed zepp in the video but it works well with dipoles. This way I do not need to use anything to wrap the wires with and the antenna deploys with getting tangled. It works very well.
CAUTION: It does take practice!!!!!!
I had plenty of help during this build!
|SOTA kitty helps by holding one end of the 40 meter section|
|The 15 meter stub with loop for support rope (also the end section of the dipole)|
This antenna is not anything new but it is easy, inexpensive and fun to make. It is heavier than anything else I use but much lighter than a G5RV and easier to deploy. Moreover, no tuner is required!
Too cold today to test it (18 degrees as I write this) but I will get down to the park and give it a go next week sometime.