Hi Dorn, I made some calculations regarding guy wires some time ago. One thing I found out was that you gain some stiffness by mowing the guy anchor out some. Not considering the sag, the optimum anc
Hi Bill, With"stiffness" I mean how much the tower will move for a specific wind pressure. In my calculations I assumed that the tower moved 1" for a give wind. Then I calculated how much the tower m
Hi Bill, I just calculated the torque on the tower element and compared them with manufacturer recommended maximum torque. I found a small difference between a stiff ground mounting and flexible grou
My experience winding coils is as follow: I wind the wire of this size (#12) on a slightly smaller core. (Place fore some testing). By varying the angle the wire "enter" the core during the winding d
Well my concrete guy solve my problem of going square or round on the base of the tower, he made it square, and over sized at that. He's going 4' square by 4' deep, that should hold up some tower. I
I guess I better go and dig down a QSL card next to my tower. Didn't use a "normal" concrete bow. Used a buried granite slab instead. No place for a card there. Hans - N2JFS In a message dated 11/2/2
Remembering I once used a 20 lb sledge hammer removing an old house foundation, something about 20 x 30 feet. Didn't take long, about a day. (I did feel it in my back afterwards though.) It sometimes
Hi Dennis, Here is how I guyed my Height's Al tower. _http://www.facebook.com/media/set/?set=a.10150198503693539.328964.579753538&type=1&l=1c649b80ab_ (http://www.facebook.com/media/set/?set=a.101501
Have had recent experience with PRB-1 etc. my advice is that you have to show "need" for whatever tower you want to put up. I was told that some towns got away with "reasonable high" for towers high
As I recall wind pressure "on a flat surface" at 70 mph is 20.6 lbs/sq ft., so if the tower is rated for 18 sq ft at 70 mph, would it be too much of a stretch to say to the zoning board that since wi
Gentlemen, I have a tower with a galvanized base dug down in the ground. My house is equipped with a number of copper-clad grounding rods. The tower is connected (via my shack) to the grounding rods.
Gentlemen, I was thinking a little (I do that on occasion) what happens when you galvanize a structure containing aluminum rivets. Although the melting temperature of aluminum is 1221°F and the zinc
Changing password doesn't stop the mail-ware. One method is to steal you addresses and use them where to send the mail. Adding your address is, according to my son, an easy thing. Changing password o
You only have to climb a tower once to know that you want as little as possible "complications" once you are "up there". Also, it is not the top of the tower that is exposed to stress, it's the botto
I don't think the capacitance is as much a problem as a possible saturation or low inductance would make. The effect is, possible, a bit lower performance at the low end of the frequency span. Hans -
Somebody asked me for information about the plate I used attach the four (4) guy wires to the triangular tower. You couldn't get the _http://www.facebook.com/media/set/?set=a.10150198503693539.328964
Just wonder how they made the video. Amazing shots. hans - N2JFS ____________________________________ From: wb2aio@yahoo.com To: towertalk@contesting.com Sent: 2/23/2012 12:59:30 A.M. Eastern Standar
Maybe yo could look in to the HB9CV antenna instead. The dimensions should be about the same but with a lot better match. A fast search showed an antenna with a 75 ohms input and I remember several h
Wouldn't a 33 feet wire have a bigger impact? I believe that's the 1/2 wavelength times 95%. Unless you have some good capacitance at the end, 26 feet is a little too short. An insulated, 26 feet guy
Why on earth does anyone want a tower, with all the expence when it onl stick up 5 feet over the adjacant building? Well, that's not really my business. Regarding lightning protection: I believe you