Paul, did the LF loss resistance drop after mowing the grass? Someone should try to roll out household aluminium foil completely within a radius of the height of the antenna to see how it loweres the
Marco, ... a wingbeat of a butterfly... is very descriptive. I like it. :) Maybe with a sensitive detector I can use the LF antenna to count birds flying under it. :) Stefan, I have not seen any sign
Hi Paul, same here, losses are high in summer: up to 70 Ohm (475 kHz) or 180 Ohm (137 kHz). In winter it drops to 35 Ohm (475 kHz) and 120 Ohm (137kHz). I always assumed it was not so much affected t
Hi Rik, At some point it is simply easier to rise the POWER. Same here at the moment on the new antenna :-) 73, Stefan Am 05.09.2018 12:22, schrieb Rik Strobbe: Hi Paul, same here, losses are high in
Hi Stefan, more power is indeed an option, but at that moment increasing the antenna height was a "quick win" (took me about one hour). In addition more power will result in higher antenna voltages (
Paul, Probably need binoculars for birds, but with your extra detector you could see your car and garage doors open/close, and catch anyone moving your aluminum tube, as long as any of these objects
Hi Rik, I'm sorry you have such high losses but it is good to hear finally that I am not the only one. I think sometimes people don't believe me when I tell them I must run a few hundred watts on 137
Hello Paul, getting 1 W EIRP on 137 kHz is indeed not easy for many of us. With my 450W TX I managed to get an antennacurrent of almost 2A in winter. My antenna was a 14m high and 25m long inverted-L
