About three years ago I purchased some Ecoflex-10 cable assemblies from Vibroplex. These had what seemed to be very nicely made PL-259 type connectors preinstalled. (Getting lazy in my old age) It ap
I have Harris Hawks perching on my beam a lot. There have been as many as six at one time. I'm always reluctant to turn the beam when they are there. They are rare in the way that they hunt cooper
Don't think so. IIRC the OP said the tubing diameter went from 4" down to 1". If you modeled in NEC with stepped-diameter correction to get an equivalent uniform length and then took a percentage be
It's not even pretty easy to measure these values. cores + teflon RG-142U..and thats from 160-10m. http://myantennas.com/wp/product/cmc-230-5k/ He can put a balanced output on the box... with whateve
I thought the CM current in question came from the antenna in the first place. Wes N7WS ... But, these common mode currents on the shield travel and radiate. Therefore, they get to your antenna, and
Yeah, but... This thread started with a question about whether to just coil up some coax or to wind a balun at the feed point to "keep RF off the coax." This sounded like a valid transmitting concern
I had a Cushcraft 80-meter vertical once that broke exactly in half and folded over on itself. I had guyed it about 2/3 of the way up and apparently caused a resonance that fractured it at one of th
I know a fair amount about ladderline. I use a coax-fed (with choke) fan dipole for 40 and 80. Wes N7WS A friend of mine told me the other day he's putting up a doublet for 80/40M feeding it with a
It may be terrible, but it's better than no antenna at all. I have 72 DXCC entities worked using an inverted-V, 45' high at the center with ends barely off the ground. Some of these with a barefoot
Not at all. FT8 decodes signals that aren't there and JT65 uses lookup tables to glean calls. So I call them imaginary modes. On my last FT8 QSO, and I do mean last, the DX station sent me a text m
It's a hobby . We get to choose our own metrics. I do find it interesting that my metric of DXCC countries worked is bogus in your mind while equally subjective experiences of yours are more valuable
I looked at your QRZ page. Have you finished your project? I helped a friend install the same antenna and tilt plate on a Tashjian foldover tower. It was not without issues. If you are interested,
Is that correct? That's a reflection-based measurement, and has VERY poor accuracy when Z being measured is much greater than or much less than the system impedance (50 ohms). As you know, because he
As I said, I can't find the data. The N2PK was an early version which I did not add USB to so I ran it on an old Toshiba laptop with WinXP and a parallel port. I broke it out and fired it up but no
I believe that's true for through measurements, however, p14 of Product Note 3577A-1 says that for reflection measurements, a full one-port (OSL) calibration is performed. Always worked for me. I
I feel the same about balanced/ladder line. Wes N7WS Rob K5UJ _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contest
That's what is used around here. The problem is with the prevalent thievery of copper wire, our power co-op uses aluminum from near ground level to the top of the pole. They use a crimped connectio
Why not just a lug on one of the bolts? Good clamping force, good electrical connection, etc. If you've already bolted the base to the rods, is there enough to put a lug and a second nut on top? Thi
A couple of questions: 1) on page 15 of your referenced document you say a distant tower should not be bonded to house (shack) ground and go on to connect the coax shield. How is that not a connecti
1) on page 15 of your referenced document you say a distant tower should not be bonded to house (shack) ground and go on to connect the coax shield. How is that not a connection between the two? It