I did that ("wet set") for my tower with no problems. Just make certain the conduit is large enough. Don't even *think* about anything less than 3" I.D., assuming few bends. 4" for the part in concre
I have a 40' Universal aluminum tower (model 15-40) for sale. $500 firm. It includes a rotor attachment, the small sleeves for the base rod connections, and all the bolts. You need only the three con
Thank you very much for the nice walkthrough of the calculations (Jim Lux). Very informative. Should the example of a 100W transmitter at a distance of 1km be about 55E-3 V/m instead of 17E-3? (A typ
FWIW, I have had an aluminum vertical up at three locations for a total of about 16 years. Just took it down last week. No metal problems at all. It is a little dull and I should clean the junctions
Universal Tower model 15-40 for sale. 40' aluminum tower, perfect shape. Includes rotor shelf. $400. Located near Poughkeepsie, NY .....Bill W2WO _______________________________________________ See:
Did one of your notes mention a 22-foot very heavy mast with 3 feet in the tower? Does this overload the TX-455 -- especially with a 40 meter dipole on top? The 19 feet above the tower would seem to
My experience is that a quad is often quieter. I realize there is not a good analytic reason for this (or, at least, none has been found yet). I used a Cubex 5-band quad for several years and it was
I did ground the loops that were not in use. I did this by default (because the relay was set up that way). I do not know if there is a "correct" choice. Bill -- W2WO _______________________________
Does anyone have a more detailed writeup available for setting up HFTA? I have the Antenna Handbook and CD, but it is rather general about how to download the necessary mappng data. Bill -- W2WO ____
I have the 55-foot crank-up, crank-over TX-455 with the standard winch and a 3-element SteppIR on top (with an 8' mast, about 3.5 feet into the tower). It is a job to crank it up and down. (Down is a
Use larger conduit if at all possible and carefully dress the initial cables in the conduit. This will make it easier to pull future cables. Leave a really good quality pull cord in it. (The 1/4" bla
I have a 3-element SteppIR on a 55' UST crankup/crankover. Works well. I have a half-sloper attached to the top of the tower. It provides a reasonable match on 160 and 40. I cannot get a good match o
about 19 feet above the tower. I assume this adds greatly to the turning moment on the tower, even with relatively small antennas on it. Does this exceed the tower specs? (I have a TX-455 with a 10-
I use my RCS-8V switch with 12v from a battery. (All my station runs from the battery, which is also charged via the RigRunner PG40S.) No problems with this switch. At the remote end I switch among a
The RF patterns (for safety) discussion is interesting. What seems to be missing in much of the discussion is a definition of "average power". How is this determined? For example, if I am a "hunt and
Thank you very much for the clarifications. The key elements seem to be "busiest 6 minutes" for a controlled area and "busiest 20 minutes" for an uncontrolled area -- these were not clear to me. Give
The BW price seems a little high, considering they are advertising in a ham magazine. However, please think a little before claiming it is an almost useless antenna. I believe it consumes up to half
Have you tried cranking one of these up or down? There is considerable effort involved, and cranking down is not any easier than cranking up. The arm motion required is a little unusual. It takes me
I need some first-hand advice. A few years ago I put a 40-foot long, 3-inch (schedule 40) pipe from my house to my tower. Center is about 10 inches under ground. Stupid me, I eye-balled the slope and
Depth is usually not a factor for an RF ground, especially for reception. Cut off the rod you have and lay out a few radials from it. ("Few" might mean something like 10, each as long as convenient b