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
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
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 ____
Or: "Take care of the millibels and the decibels will take care of themselves." 73 from Ian GM3SEK _______________________________________________ _______________________________________________ Towe
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
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
I never said that a Yagi doesn't *need* a balun! Using no balun at all would just be a fool's way of turning a "soft" common-mode problem into a tough one. 73 from Ian GM3SEK _______________________
You certainly shouldn't need to do that. Let's think about this, because RF current on a rotator control cable can't just appear out of nowhere. The defining feature of current is that it must have
Truly balanced antennas are beyond "rare". In the real world, they don't exist at all. There is a strong ham myth that center-fed dipole antennas in some way "want" to be balanced; but that is almost
be a rods, It isn't clear what you're aiming to achieve here, Jim. If you connect the coax shield to the boom at a point that has a low impedance down to the ground at the base of the tower, that wil
THIS is a much more serious butane-fueled solder gun, with a chunky copper tip that stores the heat well. There is a built-in igniter but the heating element is catalytic so there is no naked flame a
air deep) who Ah yes - the amazing, alarming 'Scope' soldering iron. Designed to operate directly from a car battery, the heating element was a small slug of carbon which could be pushed forward insi
Yet another good alternative is hot melt glue. HMG forms a flexible, weatherproof seal onto metals, plastics and many other kinds of materials. In many years of outdoor use, in a notoriously wet clim
the My first reaction was "Go Google for it!" because there is lots of information about element length corrections on the web. However, there is surprisingly little on the web about corrections for
Insulating the elements will certainly reduce the correction for the boom and mounting plate, but does not eliminate corrections completely. There is still a proximity effect, which will obviously be
and All users should try creating a .PRO file from scratch at least once, because creating your own file gives far more insight into how HFTA actually uses its radial data. If you use only the SRTM
can It depends totally on where you live. The only valid generalization about driving ground rods is: "Local Mileage WILL Vary". 73 from Ian GM3SEK _______________________________________________ __
guys. It depends on which conductor was torn. A torn center conductor is usually quite dramatic: everything stops. On the other hand, a torn shield can often cause only a moderate mismatch because t
The aim of "bonding" is to equalize the chassis potentials of several separate items of equipment, so that unwanted voltages induced along the lengths of the interconnecting cables are effectively sh