capacitance between one side of the driven element and the boom. In other words, taping the "choke balun" directly to the boom is making the antenna more UNbalanced! It's amazing to watch people doin
I have some 1-5/8 inch Andrew Hardline (LDF7-50A) which has been stored outside in New England for 5 years - is it still good and if not can it be rehabilitated? I didn't expect to leave it outside t
I have been watching this discussion with a lot of interest. The interest being, what is the power loss at 30 MHz for a 100' run of 1/2" vs 1 5/8" hardline? Turns out it is ~82 W.? This is for LDFX-5
And that's only on TRANSMIT. Your rx gain is 0 dB. This'd be a big alligator - all mouth and no ears. Cheers, Steve K7LXC TOWER TECH days have an elevated noise floor. Once you are maxed out for ante
<<I am planning a 160m vertical with elevated radials, using Rohn 25G tower sections. Years ago Array Solutions had custom made insulators for Rohn 25. You might check with them. Jim, KR9U comes down
John, ? Is the shield of your feedline bonded to ground at the point of entry into your house,?as NEC and NFPA require? And, is that ground rod also bonded to your electrical service entrance ground
I have a 135 ft rotating tower. I am wanting to put a 5 element 15 meter beam on a 36 ft boom and a 3 element 40 meter beam on a 46 ftboom on the same tower. How much space is need between them? Or i
Does anybody know if W8JIs curtain array is up and running ?? I believe he has the two towers installed, 315 and 325 feet tall. If its not, whats the hold up ? On paper, it should be a flame thrower.
I have a F-12 340N. Manual claims you can shift the ele resonance points by adjusting the eles. 6 inchs per side = 100 khz. Now do they mean tweak the .375 inch tips.... OR do they mean tweak the adj
I am missing something here as US Tower advises against lubricating cables. What are you gaining by lubricating cable? I my opinion if a un-lubricated galvanized cable shows signs of rust, it is time
I was concerned that where the cables touch the W bracing the lube might detour off, but not so much. I could spray until the lube ran down 5 to 10'. Did this for every cable on that face, and then I
Mark N1UK Even then they use eggs in the EHS guys. A 40 tall utlility pole is already 6 feet into the ground. No anodes used. trenched, so that portion of the rod needs to be coated with roofing tar
UST already makes crank up towers with safety locks installed at the top of the 1st section only. They appear to be made of 1 inch thick plates, two such plates used at each corner. A pull rod runs d
I am neither an M.E. nor a tower installer, however I worked 30+ years in the land mobile industry. My understanding is that multiple ground anchors are required by manufacturer specs (for very tall,
Sorry to be the bearer of bad tidings, but the "good price" for ICE 419-series filters is free. Several common problems. with the "right" contact cleaner is about the best you can do. relatively smal
I asked UST how much Torque should be used on both the 12 x 1.125 inch anchor rods....and also the 18 x 1 inch leg bolts. I also told em I used never seize on both anchor rods and legs bolts. Also to
Ok, Ill bite. What do AM /FM /TV broadcast folks do or use for lightning protection ?? Esp with real high towers involved in some cases. They dont shut things off and toss cables out the window. And
Had anyone modeled this antenna ... seems a couple of the NJ crowds mono's were modeled and didn't fare very well .. anybody confirm.... One weekend many moons ago one of the Ercolino's was in town e
I see that m2 offers a optional 4 els for 20m to add onto their 40M boom. This is for their 40m4llDD yagi..which is their 4 el 40m yagi, with dual DE..and on a 42 boom. Is this option something new ?
I see that m2 offers a optional 4 els for 20m to add onto their 40M boom. This is for their 40m4llDD yagi..which is their 4 el 40m yagi, with dual DE..and on a 42? boom. Is this option something new