Home |
Search |
Today's Posts |
#3
![]() |
|||
|
|||
![]()
Mark -
Verticals do work and don't take much space. The better the ground (I like to roll out fence wire, then cover with dirt and seed with grass cover.), the better the vertical works. Verts are not that good for short skip (stateside QSOs), but the further out the DX, the better verticals work with their natural low angle of radiation (that can also get into telephones and VCRs). In Ohio days, I used a 44 ft wide 40-meter horizontal monopole (HyGain) on a 40 ft tower. It worked short skip and DX very well, without the interference problems of a vertical, and without an RF-hot tower to keep the kids off of. For 80m, I loaded up 30 ft of insulated tower sections, with some TV mast on top of it (almost a full 1/4 wave), and could work what I could hear. With added coil loading it did a good job on 160m, but had some high voltage at the base (with the KW on) that burned up my first base insulators. (Not a good antenna, if kids can touch it.) Since my move to NC, I'm using a GP - kind of messy, but probably more efficient than an earth ground for the vertical. (For the horizontal dipole, the ground is just to give lightning a place to go - without coming into the house; for the vertical, the ground is half the antenna and needs to be more than a long ground rod.) AK "Mark Sheffield" wrote in message ... Hi Tom - I have a suburban Denver/Boulder lot, about a third of an acre. I'm not only up against a space problem, but don't have a tree higher than 35 ft. and then there's the XYL..... - M On Fri, 29 Aug 2003 17:32:04 -0400, "Tom Coates" wrote: How much acreage do you have? Tom, N3IJ "MarkS" wrote in message . com... With the downturn in the solar cycle and worse days ahead, I'm faced with operating on the lower hf bands. 20M has gotten to be very hit or miss wrt propagation and it seems that more and more dx is happening on 40 (with some on 30). I have a 40M dipole up about 30 ft or so, but that really doesn't cut it. I know that this is like a discussion about "what's the best color", but what antenna systems will work well on 40M, maybe even 80M, that I could mount either on the ground or up no higher than 30 ft? I need to at least get some general direction on this from an experiential data set rather than starting with the ads in QST or CQ. Tnx - Mark Sheffield/N0LF |
Thread Tools | Search this Thread |
Display Modes | |
|
|
![]() |
||||
Thread | Forum | |||
Inverted ground plane antenna: compared with normal GP and low dipole. | Antenna | |||
Mobile Ant L match ? | Antenna | |||
Poor quality low + High TV channels? How much dB in Preamp? | Antenna | |||
QST Article: An Easy to Build, Dual-Band Collinear Antenna | Antenna |