What changes or corrections are needed to Jim Lesson's formulas to calculate survival of square tubing booms ? -Charlie N1RR _______________________________________________ __________________________
Hi Mates ! I've been looking at products to assisting with tower section raising (uo to 55G) and antenna raising (up to 48ft boom). Having never used a rope winch, I researched rope capstan winches &
Not length to diameter, It is independent of diameter. It is a simple method to determine a difference of length as a ratio based on frequency. _______________________________________________ _______
Info wanted for this electric capstan: 3-wire 115V plug City Engineering, Inc, Indianapolis, IN Motor plate: City Engineering Co., Universal Motor Volts 115 Amp.7 HP: 1/2 R.P.M. 16500 CYC. 60 Deg C I
Used Rohn 45G $75-$130ea I dont have any advice I can offer you that would be successful under the conditions you wrote about in your post. GL es 73 _______________________________________________ __
Last year I prepared a Cushcraft 40-2CD and a HyGain 402BA for Field Day. Each would not show good sweep results and would not radiate well while the boom pointed up and even with the reflector end r
I understand that W2FU has concentric 80/160 also and is satisfied. I will be added an 80M 4-square next to my 160. Each is supported by a separate tower. The towers are 160ft apart. Should know more
I'm interested in info about G-2800 failures caused by overloaded antenna loads. Post your info about your configuration that broke your G-2800. -Charlie N1RR ________________________________________
Has anyone tried this ? Can it improve survivability of very large yagis? It wont prevent a boom failure, but could it help last a little longer? -Charlie N1RR _______________________________________
Thanks All. My questions and concerns have been answered. _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesting.c
I'm looking for a source for saddles for U-bolts: 3" saddles for use with my 1/4" diameter u-bolts 3" saddles for use with my 3/8" diameter u-bolts 3" up to 4.25" saddles for use with my 1/2" diamete
If you read the info provided with PREFORMS / BIG GRIPS, you see that all curved surfaces (inside thimbles and the curve side of shackles) should be mated to flat /straight surfaces like: (equalizer
This is the 4 page doc: SP2049-5_BIG-GRIP_DE <dot> pdf preformed.com/images/pdfs/Energy/Distribution/Guying_Products/Big-Grip_Dead-End/SP2049-5_BIG-GRIP_DE.pdf http://preformed.com/images/pdfs/Energy
You need to pay attention to the definition of the terms and the "units of measure' for the terms. Winload is confusing. Winloading is the weight or FORCE that the antenna becomes when a speed of win
I think the manual says four radials per band _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesting.com http://li
I'm preparing two strengthened 40-2CD's for stacking at 135ft/55ft Need tip dimensions and any element spacing changes for contesting. Thoguht there had been a post somewhere over the years, but I ha
I built one recently using inexpensive wooden rack for aluminum using Pressure Treated 8ft Landscape Timbers from Home Depot http://www.homedepot.com/p/8-ft-Landscape-Timber-288731/301802514 ________
I replaced my KLM 4:1 balun for my ^L 10M with one from Danny Horvat's company: (T93M, E73M, N4EXA ) http://myantennas.com/wp/product/bl-41y-3k-41/ _______________________________________________ ___