Next time try searching the contesting.com list archives. There you will find K7FR's excellent post: http://lists.contesting.com/_cq-contest/1996-September/022055.html Losses for a PL-259/SO-239 comb
Pete, These low angle 'inflated gains' are modeling artifacts. I saw similar behavior after entering a rather detailed topography for my location. To check the model, I took the original terrain prof
Ted, Check out K7FR's great post on connector loss: http://lists.contesting.com/_cq-contest/199609/0345.html At HF, connector loss is 0.008 dB or less.... -- Steve Miller N8SM millersg@dma.org http:/
-- Steve Miller N8SM millersg@dma.org http://www.dma.org/~millersg List Sponsored by AN Wireless: AN Wireless handles Rohn tower systems, Trylon Titan towers, coax, hardline and more. Also check out
Alex, You obviously do not know what you are talking about. SWR is a simple ratio. SWR is not a wave. SWR, being unitless, cannot possibly "carry energy". SWR is not a SYMBOL for the mismatch ratio b
Both test groups performed the same for the first 48 hours because the caffeine/placebos were not administered until the 48 hour point. -- Steve Miller N8SM millersg@dma.org http://www.dma.org/~mille
Because I want a better wheel. So was the 105-BA, 155-BA etc. now we have the 105-CA .... I have not seen articles on weatherproofing the type of coil I intend to use. Any references would be welcome
Ooops - hopefully the intended 4.5" diameter was obvious! :o True. Models of the new design indicate up to 1.2 dB more gain with a lower feedpoint resistance on CW which is matched to 50 ohms using a
Marc, I've been doing some 402-CD modeling/tweaking for my station. Since my AO (MININEC) model was available, I ran it for your case: MININEC input impedances assume perfect ground. Radition pattern
Towertalkers, I am upgrading Cushcraft 402-CDs. The plan is to replace the stock loading coils with high-Q coils made from 1/4 inch copper tubing. I'd prefer to apply a low loss protective coating di
-- Steve Miller N8SM millersg@dma.org http://www.dma.org/~millersg List Sponsor: Are you thinking about installing a tower this summer? Call us for information on our fabulous Trylon Titan self-suppo
<snip> <snip> In some cases, K7GCO is right on the mark. However depending on the installation, there are valid reasons (not "band aids") to use nonconductive guy wires (or EHS broken up with insulat
Gene, You are using the wrong equation. It has been used in ham circles for a long time but is incorrect. F(max) is NOT equal to W[(boom plus bracket area)(sin theta) + (element area)(cos theta)] K5I
You had to repair 1/3 of the welds but consider it a great tower? It sure doesn't sound that great to me. Am I missing something? List Sponsor: ChampionRadio.com - Trylon self-supporting towers, safe
Unless I looked at the wrong page, the fastener torque page at www.centuryperformance.com does not cover grade 2 or 5 bolts. (Presuming Ted meant grade 2 instead of grade 3.) Actually, you want to ti
I'm looking for articles or other info on making home-made 7/8" hardline connectors. I've seen articles on this subject a few years back, but got rid of most of my magazines when I moved. If someone
Yes, but the original post asked the following: Adding WARC band antennas to the system would not result in the most contest competitive solution due to the antenna interactions noted previously and
Thanks for the replies so far. My cable is not the typical CATV foam dielectric stuff so here is some more info: The hardline is 50 ohm air dielectric with a large center conductor (0.31"). Thus, so
Hi John, I was the one who just removed red & white paint from some recently acquired Rohn 55G. The options I considered were: 1) remove with wire wheel attached to a drill (very slow) 2) chemically
Hi All, I just thought I would relay my recent experience removing red & white paint from some used Rohn 55G. After looking at the available options, I selected soda blasting as the method of choice.