Hi guys, I've been playing with YT elevation angle statistics files lately and have been surprised by the huge difference in the elevation angle statistics between regions which I would have expected
Thanks Dennis, Yeah, I know that 1 degree is pretty difficult to get to, I've sure never had an antenna that gave me much at 1 degree. But... I'm looking at a new house and its kind of a bummer to se
My mistake, seat of the pants comment. You're right, the W0-CO-US path certainly leans toward the higher angles but the statistics still show a big difference at the low angles between CO and ND/IA s
Hi, I downloaded Microdem and DEM data and have generated terrain files.... worked great! I've ordered a new antenna book so I'll have the HFTA program to use with the terrain files but in the mean t
Thanks Jerry, Think I'll forget YT and wait the few days for the new Antenna book and HFTA to arrive! Jerry, K4SAV _______________________________________________ ____________________________________
Does anyone have any idea if its possible to stack a couple yagis on a crank up tower? I'd really like to be able to put something at about 50' and 70' but I'd also really like to not have to climb a
Thanks Rick - Make sure I understand right... the ring rotator pegs slip into tower tubing right at the top of the tower section so the ring rotator ends up just a few inches above that section. That
More questions from a yagi stacking rookie! I've been using the HFTA software to try and get an idea of the optimum distance to stack a couple yagis for best performance. I'm stacking 10/15/20 triban
Thanks for all the good input. I found a lot of info in the antenna book last nite as well, I should have done some reading in their first. I'm assuming that, in HFTA, I'd better not trust too much a
Looking at the specs for the Universal Towers TX-455 versus the Tashijian LM-354 tower they are very similar. Same height, same weight, etc. However the LM-354 is rated at 23 sqft load at 85mph while
Thanks Joe, Your comment inspired me to look for 'peak wind speed' in the archives and I found this interesting thread which includes a couple interesting links: http://lists.contesting.com/archives/
Thanks guys, I got a note from Gary Smith at US Towers saying their calculations come from UBC 97 code. Looking that up I found the UBC 97 code refers to the 'fastest mile' reference. So... the TX-45
I want to have gain antennas for 10/15/20/40 on top of my tower and am trying to decide between a 4 band antenna like the Force 12 C4XSL or a tribander and a separate 40m yagi on the same mast. Strug
Hi Mark, I just posted a similar question to the list a few days ago asking about a 10' separation. Lots of good feedback and generally folks thought I'd be ok... especially if I'd rotate the two bea
Anyone have any ideas on how to remotely switch balanced lines. The idea being to have 2 dipoles/doublets on a tower with one balanced feedline running to the shack and be able to switch the feedline
Thanks everybody for the input. I feel myself getting ready for another one of my ill fated homebrew projects :) !! This SEEMS pretty straight forward but my homebrewing skill are pretty suspect so I
Thanks for the feedback John, I haven't decided on the feedline yet. I'd like to just use commercial 450ohm window line.. not sure how it would react at a KW but I've used it with good success at 100
Anyone have favorable/unfavorable comments about this tower? I'm thinking of a used one and, looking at the 4 eham reviews, there's a lot of talk about moving towers and needing to add guy wires. I'm
Hi all, I'm looking at buying a used Hygain HG70d crankup tower.... about 20 years old but the cables have been replaced and looks in good shape from the pictures except for some rust in the areas
Thought I'd run this through the group and see what you thought... too much math/physics for me to figure out. I need to take down a Triex WT-51. I'm traveling several hundred miles to do it and w