Tom, I have only one Tailtwister currently in my station, using a 350 foot control cable. I did several things to obtain completely reliable operation: - I relocated the capacitor to the tower base (
Gerald provided excellent insight into the apparent disparity between the guidance in Preformed Line Products (PLP) application notes (which specify 1/2 inch heavy duty (HD) thimbles for use with 1/4
Hi Stan, I do indeed use 12x12x1 inch type LE phenolic (trade name: Garolite) plates on my stacked 3 element 40M Yagis. However, since I use T-matched and not split driven elements, I think your ques
Stan, I'm sure you'll have excellent results with molded fiberglas rod. He's an excellent comparative analysis of the physical properties of commonly available structural composite materials: http://
Stan, A few days before a 1975 CW DX contest, I stacked a 3 element 20 meter Yagi about 8 feet over an existing full size 3 element 40 meter Yagi on a 140 foot tower. I checked out the 20 meter Yagi
The Kellum grips commonly stocked by electrical suppliers are fabricated from plated steel wire. In my experience, they fail in five years or less. If not caught in time, their failure could result i
Alan, On ebay, serach for: hoisting grip Don't get discouraged, good deals do pop up, even on ebay. Good luck! 73 Frank W3LPL -- Original message -- _______________________________________________ __
An increasingly popular single tower solution providing good performance on 40-20-17-15-12-10-6 is a 3 or 4 element SteppIR and a Cushcraft 402CD. A 30 meter dipole meets the needs of most DXers, or
Rick, UPS will ship packages up to 150 pounds, up to 108 inches in length and up to 165 inches in length and girth combined. 73! Frank W3LPL -- Original message -- ___________________________________
Jack, FHJ4-50 is an old version of Heliax, when Heliax was actually helical. Your cable is probably 30-40 years old. Connectors are often available at hamfests, with part numbers that begin with 44,
Mike, I've had excellent long term success with Ham-IV style rotors by replacing the stock terminal strip screws with stainless screws. I've never waterproofed the connections. I've never had a moist
Scott, The only dumb question is a question not asked. free space wavelength is the correct description of the dimension you are looking for, use the speed of light to calculate it. There are lots of
Bill, I used two pieces of 3 inch o.d. by 0.125 inch wall aluminum tubing in all of my 48 foot boom Yagis. Its an excellent choice. Like you, I've never found a standars product to splice the booms.
Jim, I recommend that you do not use six pin C-J connectors. Its easy to misalign the male and female connector with three pins engaged and the other three pins not engaged. The results can be disast
Peter, Be very careful with those 6 pin C-J connectors! They provide no protection from misalignment, and its a mistake easily made (three pins engaged, and three pins not engaged). The consequences
Peter, I use the 8 pin C-J connectors with excellent results (indoors), but I haven't tried to purchase them in years. Color coding cannot possibly solve the misalignment risk with 6 pin C-J connecto
60 feet is too low for a 40 meter Yagi to perform effectively. I'd suggest 40 and 20 on your tall tower and 15 and 10 on the short one. If its within your budget, I'd suggest two 4 element SteppIRs o
Aluminium? :) A method I've used with excellent results is to lubricate the aluminum tubes as best as possible, then hammer the end of the stuck tube from the inside of the larger tube. This can be d
Pat, I've used both elevated feedpoints and feedpoints near the ground with elevated radials and both work ok. If you use "gull wing radials" (i.e., base near the ground with elevated radials), you'l
Galvanized locking nuts for turnbuckles can be purchased from marine supply ( not sailboat!) wholesalers, typically supplied in pairs (a left hand and a right hand nut). It can be difficult to purcha