I'm thinking of moving my rotator to the bottom of my 80-foot Trylon freestanding tower. I have read the archives about doing so, but am still not clear on what is a suitable mast. I could use some a
I'd like to install a permanent fall arrest line from top to bottom of my tower that I could clip onto using a "rope grab" type of device. I think the rock climbers call them "ascenders". My question
ORIGINAL MESSAGE: ** REPLY SEPARATOR ** Running raw 220 volts could land you in jail on an attempted murder charge. Better to get an electric fence charger at any farm supply. I use one to keep my do
ORIGINAL MESSAGE: ** REPLY SEPARATOR ** I've never understood the fascination with verticals for the low bands. If you put up a dipole or inverted vee, you get 100% efficiency, lower receive noise, u
ORIGINAL MESSAGE: ** REPLY SEPARATOR ** It's true I am not a serious DX chaser on those bands, but if I were I would certainly not stop with a single vertical. Four-squares and beverages are what the
ORIGINAL MESSAGE: ** REPLY SEPARATOR ** So you are saying that a dipole at less than 1/4 wavelength high has *only* straight up radiation? You might want to rethink that one. 73, Bill W6WRT _________
ORIGINAL MESSAGE: ** REPLY SEPARATOR ** About a decade ago, there was a DXpedition to one of the antarctic countries where they were on a glacier several hundred feet deep. Since ice frozen hard is a
ORIGINAL MESSAGE: ** REPLY SEPARATOR ** Apex is at 70 feet, ends about 20 feet, and it is full size - no traps or loading coils. The blessings of a 2.5 acre homestead. :-) Bill, W6WRT _______________
ORIGINAL MESSAGE: ** REPLY SEPARATOR ** If you include the extra man-made noise the vertical picks up, that sounds about right. :-) Seriously though, such statements are of no value unless you includ
ORIGINAL MESSAGE: ** REPLY SEPARATOR ** Yes you did. Here is your original quote. Read it again: "They have to be at least 1/4 wave above ground before the radiation pattern is anything but straight
ORIGINAL MESSAGE: ** REPLY SEPARATOR ** W7EL, author of EZNEC, hangs out on the rec.radio.amateur.antenna group on Usenet and is quite active. Bill, W6WRT ____________________________________________
ORIGINAL MESSAGE: ** REPLY SEPARATOR ** May I ask what the term "rebar" means in regards to lanyards? I have seen the term a few times but have not found a definition. Bill, W6WRT ___________________
ORIGINAL MESSAGE: ** REPLY SEPARATOR ** The horizontal part also helps make it more broadband in terms of SWR. A 30 or 35 foot vertical, whether center or base loaded is going to be very narrow. A mo
ORIGINAL MESSAGE: -- REPLY SEPARATOR -- I'd recommend not running RF through the tower. Use the tower to support a wire and apply the RF to that. Even when initially bonded correctly, discontinuities
ORIGINAL MESSAGE: -- REPLY SEPARATOR -- Naw, a "rig" is what they drill for oil with... or is it what politicians do to elections... or is it a cowbpy's outfit... or is it an eighteen-wheeler... or .
ORIGINAL MESSAGE: -- REPLY SEPARATOR -- If: 1. Your house is made of wood and 2. You have fireplace logs sitting around outdoors and 3. You live in a termite area then 4. A bunch of three inch dowels
ORIGINAL MESSAGE: -- REPLY SEPARATOR -- The above sentence is nonsense because you are confusing power (watts) with energy (watt-hours). Horsepower can be converted to the equivalent value of watts,
ORIGINAL MESSAGE: -- REPLY SEPARATOR -- That raises an interesting question. As I understand it, lightning really does flow in one direction, making it DC but having a square-wave nature. Is that whe
ORIGINAL MESSAGE: -- REPLY SEPARATOR -- As I understand it, plasma (in the general sense) can exist with or without current flow. In the absence of external heat, plasma will quickly recombine into n