a I that a Another option is to buy a 1/2-in socket adapter - see Figure 3 of this article: http://www.ifwtech.co.uk/g3sek/in-prac/0710.pdf Snap on a socket to fit whichever size of rod you're drivi
about A "CE" marking is a statement that the product complies with *all* applicable European Union requirements, and the requirements for electrical products naturally do include safety. However, th
Or: "Take care of the millibels and the decibels will take care of themselves." 73 from Ian GM3SEK _______________________________________________ _______________________________________________ Towe
Hold on, Jim - Please say that <isn't> a metal NEMA box with flange connectors at both ends? 73 from Ian GM3SEK OD, silver 393 coax been that is screws. braid sanded, have an quickly. since they ____
Thank goodness it's a <plastic> NEMA box (the choke would do nothing in a metal box). But why use a box with bulkhead connectors anyway? That seems to be the root cause of all the problems. I never u
Hi Grant I do exactly the same: the plastic box with an 'O' ring seal, 'tails' of cable passing through waterproof plastic cable glands, drain/breathing holes, and all connections and PC boards insid
I'd agree with Chuck and Jim: a 20-degree squint from a correctly constructed T-match just isn't possible. To produce a squint of that magnitude, something at the feedpoint would need to be grossly w
antennas. I are a About 7 years ago, a good friend lent us his early-model 3-element 20-10m SteppIR for the winter season, to see how it would fare in this extremely windy QTH. It worked fine, with
antennas. I are a About 7 years ago, a good friend lent us his early-model 3-element 20-10m SteppIR for the winter season, to see how it would fare in this extremely windy QTH. It worked fine, with
Thanks for the information, Joe. I hadn't visited the SteppIR website for some time. 73 from Ian GM3SEK _______________________________________________ ______________________________________________
Granted that 50-60 countries are an easy chip shot from anywhere in Europe, but the remaining countries require reaching out much further. 73 from Ian GM3SEK few ____________________________________
Place the bottom of the mast against a firm support (eg on the ground against the bottom of a wall) and make sure that all the smaller sections are safely stowed inside the mast. Then find a piece o
I can strongly recommend the Iroda Solderpro 180: http://www.pro-iroda.com/pro180.htm This is a serious butane-powered soldering gun (nothing "micro" about this one!) with a large copper tip that sto
As Roger says - it's easier to do than to explain. In this context, "relatively clean" is just fine. Although the adhering hot-melt adhesive doesn't look pretty, that isn't a problem. Think of it as
It's quite possible that only the outer jacket has been damaged, somewhere up the tower, but not the solid copper shield. This would allow water to run down between the jacket and the shield, ending
degrees Here's another data point, from 40m. My 4-square is at the end of a small ridge which slopes away in all directions from West through to North. With a main lobe at 290deg, this antenna was id
the The degree of "natural balance" that one might expect in a center-fed antenna will also depend on the frequency. Jim's description is very true at low frequencies, where antennas are a typically
That is exactly what I try to do - see my website: "Clamp-on RF Current Meter - *the* most useful tool for RF interference troubleshooting." http://www.ifwtech.co.uk/g3sek/clamp-on/clamp-on.htm A per
(Apologies, Ed, I was tied up yesterday with Radio Club Secretary work.) The answer to your question is "With great difficulty!" All the things that can be done relatively easily with coax feedlines
*prove* almost perfect "Does it matter?" is a separate question from the ones about measurement technique that follow later. One answer is based on treating CM current as a potential interference pro