I have not used the specified heatshrink on these connectors but just sealed them in the usual way. The 'built in' weather proofing I would only consider minimal. That said I have a couple of N conne
Just put together an EF140 that was removed woking from a friends QTH. Put it on the tower about 30 feet up so I could easily get to it for adjustments and measurements. My MFJ259B says SWR is 1:1 at
A collective thanks to all here who posted answers to my query. Seems there is meant to be a coil across the feedpoint so later today I will wind something that seems to fit with the average of all t
Is there a problem with the website for SteppIR? Keep getting gateway timeout. Martin - HS0ZED See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather Stations", and lot's more
Seems it's okay with everyone else. Just me here in Thailand cannot reach it. Strange, I can get to anywher else in the us just about. Will keep trying. 73 Martin - HS0ZED Is there a problem with the
I use 4NEC2 to do a lot of my pondering, perhaps others on here use it as well. I have a question concerning the graphs it produces. These are scalable with the up/down arrow keys but for some reason
Hmm, I don't quite see it like that Jim. Even if I do a sweep that gives an SWR of less than say 2:1 from the start to finish of the sweep the SWR scale still shows from 1 to 10, doesn't limit it to
I have a 'funny' with my G800SDX rotator, well the cable connecting the controller to the motor unit. When I put up my tower a year or so back I used what I had for rotator cable, about 50 metres of
I know this is a topic that seems to regularly surface here, not really surprising I suppose, but I have a question that seem rather to go against what I think I understand. Recently I have started t
For measuring antenna VSWR. Anybody have a decent scan or url of one? Thanks Martin, HS0ZED _______________________________________________ _______________________________________________ TowerTalk m
I tried to google this but got lost in the mire! Anybody; The math to determine how much I should lengthen/shorten a dipole to move the resonant frequency from where it is to where I want? Must have
It's all good now, dipole is 1.1:1 at the end of the coax right about 7.060. Worked VU7RG on 022 and an RU4 about 012 just to be sure it works. The dipole slopes of the tower to the (sort of) north (
Folks, Just talking with a friend about a 'wind problem' is there a nice formula that will give a reasonable estimate of the likely wind survivability based on: a mass A of surface area B suspended C
Jim, Thanks, nice and simple eh? :-) Reasonable = +/- 20% then a tad (metric or imperial tad, not important) Of course the answers now breed more questions. JUsta check list to see if I'm doing this
I have a nice Cushcraft X9 antenna that I would like to use as an X7. I understand the reason CC dropped the X9 was because the performance was so similar to the X7. From the documentation I have it
Just a note of thanks to all who made suggestions about my Cushcraft situation. Will try to speak with them this week and see if I can get a resolution. Thanks Martin, HS0ZED ________________________
I just bought some 12 gauge aluminium wire to rewind some traps and at the price it occurred to me that it would make great antenna wire. Given that it is lighter in addition to being much cheaper th
Since others started this I don't mind adding. The Google Earth idea sounds interesting and I would like to hear just how you do this. As an aside I suspect it might get easier when Google releases t
I plan to use RF chokes at the feed point of my quad elements and would like some ideas on a few parameters. Here are some details if anyone can help with answers or ideas. Modelling of the multi ban