That is correct ASSUMING that both sides of the folded dipole are the same size wire. It is possible, by selecting the wire sizes carefully and appropriately, to make the input impedance of a folded
Mike, I don't have a manual, but I have the 14 element version of this KLM 2m yagi. Can measure elements if that would help. Don N8DE Mike Switzer wrote: I am going nuts (I know it is a very short wa
Cannot understand why you can't run the far end of the antenna towards the tree ... using a halyard through a pulley attached to the tree, with a weight on the end of the halyard and the 'junction' w
Isn't 5/16" quite small diameter for the load? I have two rods here, each about four feet long .. will measure in the morning .. think one is 7/8" and the other is 1" in diameter. Don N8DE Carl wrote
Barry, Take a piece of angle iron with two u-bolts on it, one for the mast, and one for a tower leg. Attach it above the rotor. Then you won't have to worry about that 4.3 degrees at all. Don N8DE Ba
Universal makes only 10' sections. What you have is probably Heights tower, which is in 8' sections and very similar to Universal tower. Don N8DE W3cmp@aol.com wrote: Hello: I just bought straight 4
Wow Blake, I have 6 acres with a wooded site perfect for a commercial tower [unguyed, of course]! I'll take that offer! Don N8DE Blake Bowers wrote: Ok, lets make a deal.... I work with a number of c
I believe the word "optimum" should be replaced with "sufficient". My experience with verticals tells me that 100 radials works much better than 60, especially when concentrated in certain directions
Yes! In my case ... 60 radials spaced 6 degrees apart .. then concentrations of ten radials at 1 degree each for Europe, Japan, South America, and VK/ZL ... works like gangbusters .. all I need now i
Tom, Good question! I never used a balun on the 80m vertical, but might when I replace the coax this Spring. I'll be interested in reading the responses to your query. Don N8DE Tom Champlin wrote: Th
Jim, His comment/query concerned the common mode current on the feedline if it is in the radial field. I'm waiting for comments about balun. Don N8DE Jan Erik Holm wrote: Why a balun? 73 Jim SM2EKM -
Or use 75 ohm coax and parallel two of them for a much closer match! Don N8DE Clive GM3POI wrote: Even better still, I use parallel quarter wave transformers to match 12.5ohms to 50 ohms. So the only
For Sale: Telrex rotor and control - good shape - with collar. $250 - Pick up or I will deliver within 200 miles for additional $50. Will be listing monobanders for sale in next few weeks. Don -N8DE
The Telrex rotor is model A 214O RISX [with operating/assembly instructions] 9,000 in.lbs rotating torque 380 degrees travel [automatic limit] .5 rpm 2" OD mast 1/4 hp motor approximately 11"x12"x19"
Due to many private requests, I am sending this to the reflectors: For Sale [must be picked up in Connersville, IN]: Monobanders: The monobanders are all Telrex models: [band][#els][boomlength] 10M31
The Telrex Rotor I posted for sale has been sold. Thanks Don N8DE _______________________________________________ See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather Statio
The Telrex Antennas that I listed earlier are now SOLD. Other antennas [Cushcraft, etc] are available. 73 Don N8DE _______________________________________________ See: http://www.mscomputer.com for "
Ed, See the 'History of the Bell Rotator' at: http://www.rotordoc.com/ Should answer all your questions. 73 Don N8DE Edward L Bruns wrote: Anyone know when CDR first made rotors for Hams? A buddy has
I'm so pleased that I found this 6 acre place, 4 miles from the nearest town .. and it's zoned agricultural .. no permits needed for ANYTHING. Don N8DE Alan C. Zack wrote: In putting up my tower I ha
Lee, Choice of a tuner depends mostly on what you're trying to tune .. ESPECIALLY on 160m. Remember that an antenna tuner serves only ONE purpose .. to 'match' the impedance at the shack-end of the f