I have a piece of DavisRF BuryFlex that I used as a feedline on my crank-up. It got caught in the tower one day, and the outer cover of the cable got torn. I didn't catch it for a couple of weeks, af
The latest in a long series of questions related to my tower project in Boonville, CA... I want to truss the boom of my 40 meter yagi. I can use stainless steel wire rope, but I'd prefer not to use s
Does anyone have a PDF or other digital image of the mounting template for the HyGain Tailtwister rotor? My manual doesn't have one, and I need to drill a new mounting plate... Thanks! **dan, K6IF Do
Ok, next issue in my tower project is raising the mast and installing the antennas (I plan to install the tower, a 72' Trylon, with a crane). For those who are curious, my cable with stand-off's idea
Does anyone have a proven design for building 50:75 ohm unun's for us with CATV hardline? I'm looking for something that will handle full power all day long in a contest. Details such as core size an
I am designing a 2 element 40 meter yagi in the spirit of the Force 12 N element yagi's. The goal is not to be less than full size, the goal is to avoid unwanted interactions with a near-by (13' down
I am putting up a T400-80 Trylon 80 foot freestanding tower in a few weeks. I'd like to be as safe as possible when climbing it, but I am also a cheap SOB. So I am thinking about installing a very si
I am in the process of designing a tower for my new vacation place, and I have a steeply sloped foreground in one direction. I plan to install a C-31XR and a 2 or 3 element 40 meter yagi. Experience
I am building a new station at my vacation place in Northern CA. I will run a C-31XR for 10-20 meters, and want to stack a 40 meter yagi with the C-31. The rotor will be a Tail Twister. The station w
Check out this auction on ebay - item #1214973136. I have nothing to do with it - I just noticed it while browsing. This appears to be a 240' freestanding tower with about an 80' rotating top section
I am planning the installation of a 100' Rohn 45G tower, and would like to use Polygon's 3/8" fiberglass rod to guy it with. I can't find a dealer or distributor that stocks the stuff, and Polygon wo
Someone should create a FAQ on materials for making verticals :-) This would be one entry. I was at my local DIY emporium today when I discovered Type L and Type K 'hard' copper pipe. This stuff is 9
Does anyone have data on taper schedules for building free-standing vertical antennas from aluminum or copper? Is it in the Antenna Book, and I just missed it? What I want is a table that says someth
Does anyone have any data, even anecdotes or just personal experience, about using verticals and arrays of verticals with steeply sloped foregrounds? Suggestions to buy terrain modeling software > /d
At the risk of sounding glib or like a F12 fanatic (which I am, but not for any financial or commercial reason), this is a no-brainer to me: C-51XR @ 120' Some 80 meter antenna @ 101' - probably a Ma
I finally decided to toss the old tribander and buy a C-3E. I'm praying that Tom gets it to me in time for SS SSB. I'll have it at the top of the mast at about 85'. I was driving home tonight from di
If you've got a C-3 (any sort) stacked with a direct dipole feed antenna (tribander or monobander), I'd love to talk to you about it. I've been modeling a stack for the 10 meter contest of a C-3E and
For the upcoming 10 meter contest, I built a 3 element monobander that I plan to stack with one of my existing antennas. I have two options: 1) Stack them both on my rotating mast, spaced about 15 fe
I am in the process of getting things nailed down for the upcoming contest season. I plan to concentrate on two domestic contests (CQP and SS), and I am in Northern California. My main antenna system
I have a somewhat unorthodox approach - I'd be interested to know if anyone else does this. I've got a 70' crank-up. When the tower is in its fully lowered position, I need to get to the antenna's on