Simple QRP projects, 10m, 6m, FT8, JT65, WSPR, LF/MF, sub-9kHz, nanowaves and other random stuff.
Yes, this type of antenna can be VERY effective. Most hams do not recognise that the radiating part of the antenna is where there is RF current, and everything you can do to get the RF current up in the air helps. I have also made such an antenna, on 40m, but designed the loading-coil and capacitance of the top-hat (several large diameter coffee-cans) to be a resonant series circuit at the freqency required. This then top-loads the antenna, with a low impedance, and small reactance (if resonant) and makes the up-feed radiate very well. I made a roughly 1/4 wave vertical like this, top-loaded and high-Z fed at the bottom. i did not require huge radials, the radiating part of the antenna is at the top and it worked a treat! resonant top-loading is the way to go!. See http://users.tpg.com.au/users/ldbutler/ReverseFeedTopLoading.htm for an interesting read.Cheers, Hugh G6AIG
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Well I am pretty sure I've posted this link before, not that it matters. When I started in the 1960s my first experiences were with sh...