R8

First, for what it is, the Cushcraft R8 is an expensive ham radio HF mutliband vertical antenna in my opinion. It does cover 10 through 40 and does so without radials. In fact, due to the counterpoise design, using radials may actually cause problems for this antenna.

Electrically, because the antenna is not exactly a simple 1/4 wave vertical with radials, but rather a loaded vertical with a matching network, you should periodically check out the antenna to ensure that the matching network, counterpoise, and so on are performing as expected.

I've found the R8 to work ok once it's installed properly. Some maintenance issues may arise, but overall the antenna works for most locations. Guying will be required if in windy or icy locations.

New hams may be tempted to use this antenna to tackle nearly every situation (10m through 40m). Keep in mind that like other verticals, noise can be a factor - so don't install this too closely to known noise generators (powerlines, etc.).

Bottom line, if you have a small lot or for some reason cannot install a HF antenna that requires radials, then you might consider this antenna. However, if you do, be sure to guy it.