Recent content by LW1DSE

The project is becaming viewable. Tomorrow, using a 200W giant solder iron, a good soldering to insure good conductivity. 1/8" brass screw are for mechanical mount, only.

Obviously, as frequency increases, difficult rises too. My idea is to pre-adjust the whole thing insede home, and when it is roughly calibrated, then test it ouside, at the mast. Let's see what happen. I have two points to play with: size and location of the coupling link, and the height of the...

More pics. Still remains to cut 4 ground planes and to solder everything with tin/lead and electric 200W iron.

I started to build the antenna.

Very dangerous for SS output stages. I have all my antennas DC earted, so such a discharges are difficult (alrhough not impossible).

Welcome from Argentina, too! Osvaldo LW1DSE

I accidentally found it: Corona_Discharges_Glow_on_Trees_Under_Thunderstorm.pdf It can be downloaded freely in the web. Spooky.

Unfortunately, this issues are normal in our hobbie, like as in many others. Stupid people abound elsewhere in our world, and a clear example are politicians. I refuse to use and make ham radio for contests, expeditions, and the like. My interest is escentially, the long and pleasant chat...

My knowledge about industrially manufactured antennas is quite low or null. From the very start of me at radio in 1987 when I got my LW1DSE call, I used to build my own aerials, and even my own rigs. However, many commercially available are based in the ever-deseiver adverticers. Anyone that has...

Not 100% isolated, they share ground. The idea is: as a 1/4 line or multiples acts as a tuned circuit, and you can couple a tuned circuit to a small impedance coil (link as in old tube power amplifiers), then I can couple energy to and from the antenna via a link. Let's see if it's true my...

Thinking about to build a new 440MHz antenna, in some instances similar to the 144MHz above depicted. It may be a 1/4 wave for 440MHz with 4 radials, all in 3/8" or 10mm copper tubbing. The coax. magnetically coupled via a loop or link close to the bottom of the exited element. A stub couples...

Hello from Argentina, you're welcome here.

Yes. I like the sniff of hot vacuum tubes (valves) when working.

Be sure to NOT use a common rod for lightning rod(s) and for electrical/electronic apparatus. Use separate ground system, and as far as possible for both.