Has anyone used the Heathkit 1481 remote coax switch for feeding a 2 yagi stack? I have an old unit and can't find the schematic for it. I think it is the type that "floats" the unused ports rather t
I agree with AA4LR and others about the relative worthlessness of WD40 as a lubricant. It does a great job of loosening rusted bolts, displacing water, however. I have had good success in using a cou
I had a similar experience with Cushcraft recently while trying to get a balun for a 40 meter beam. I say we vote with our checkbooks and let Cushcraft know what they can do with their policy of not
I'm testing a 2/2 40m stack that uses a Cushcraft 402CD@70' and a XM240@130'. I'm feeding this with a WX0B stackmatch. The 402CD is directly coax fed with some ferrite beads over the coax , and the X
Thanks for the reply Scott. I guess what I really need to know is which side of the driven element is the "hot side" (i.e. goes to the center conductor), and which is connected to the coax ground. If
Following the advice received here on TT, I called Cushcraft to order one of their MNXM baluns to use on my 402CD that I am stacking with a new XM240 so that the phasing and matching would be identic
Thanks to some hard work by the PVRC/NC tower Krew (or is it a posse? my hip hop speak isn't too good...K4MA, K4HA, KS4XG, NT4D), we took down a lightning damaged 402CD and replaced it with a XM240.
I have a basic question about mounting dipoles (or inverted vees) on towers. I have always used a PVC (insulated) standoff arm to get the feedpoint of dipoles several feet (usually 3'-5') away from t
As I reported yesterday, I was extremely pleased overall with the Cushcraft XM240, especially the SWR curves. Today we mounted a 5L 6m beam 5' below and a 4L20m beam 11' below the XM240. Even at thes
<< Subj: Re: [TowerTalk] 402-CD Spacing with KT-34XA To: <towertalk@contesting.com> Date: 10/13/98 5:21:02 AM GMT Daylight Time From: K7LXC@aol.com Sender: owner-towertalk@contesting.com To: k9rz@pro
I plan to sidemount a 3 element tribander aimed at the Carribbean/northern S. America for quick switching. From North Carolina, what angles are most of these signals? What height would you recommend
I have a question about the low frequency accuracy of the MFJ 259 antenna analyzer. I spent CQWW weekend doing some antenna work while KS4XG did a 15m SOSB effort from here. Since the station was in
Thanks to everyone who replied about the problem I had with my MFJ 259 analyzer. It is indeed AM broadcast interference that is causing the problem, which only manifested itself on 160m. I used an IC
<< Tower talkonians please heed the warning - Check your element to boom mount and boom to mast mount alignment before installation! I cannot fix the element to element alignment without removing the
I'm doing some work to recover from a lightning strike to one of my towers... I currently have a 160/80 parallel fed inverted vee which has worked well for many years. I want to seperate the two ante
I hope this subject is kosher for this reflector... I'm working on getting rid of a particularly nasty case of power line noise. I would appreciate any guidance that any of you folks could offer: Hav
While my station is not exactly what you want to model your construction practices after (unless you have a duct tape fetish and aspire to be a roadie for AC/DC), but I do have considerable experienc
I need to replace the bolts in a 25G tower. I need to find a better type of bolt, that won't rust so quickly. The Rohn tower doesn't mention what type of bolts to use. Since the stock Rohn bolts didn
I broke off a bolt in a Rohn TB3 thrust bearing. It broke off even with the edge of the flange on the bearing. Is there a good way to get this out while it's up on the tower, or am I going to be forc
I just built a HyGAin 204 and used the supposedly computer optimized 204CA dimensions from N6BV's antenna book. The dimensions of the element lengths and spacing are greatly changed from the stock 20