I've been erecting and using inverted L - random-length wire antennas for some time now. I move monthly from one State Park here in Oregon to another, serving as volunteer campground host in my retirement. One aspect of the antenna that I can't seem to find any specifications about is the physical distance of the anchor point (feed-point) of the antenna with respect to ground - the physical dirt used to hold the antenna wire down. A friend of mine (who is also about to erect his own version of an inverted L) suggested that there might be interactions and feed-point impedance variances with differing feed-point distances above the earth. I have been using a big plastic tent stake, pounded about all the way in, and wrapping/anchoring the down-wire (feed-point end) around the stake - making the wire virtually touch the ground. I'm using insulated wire, so there is no electrical contact with the wet ground. My feed-line transformer - a 4:1 longwire/vertical UNUN - is lying on the ground right next to the stake and ground rod/radial plate. So, is there any advisement to raise that whole attachment/feed-point off the ground - for impedance issues? The antennas always seem to perform well, considering the nature of the beasts and my transient nature. But I'd like to have an educated opinion about it all. Thanks much.