A yagi log periodic has a gain of 7dB, does a circular have the same? it's much more compact, does it's gain Vs it's different polarity
result in a gain of only 4 dB when receiving/emitting from/to a monopole?
If there's NO current flowing, there should be NO magnetic(H) field, there will be an Electric(E) field whenever there is potential, you can minimize the fields by twisting the wires.
That's why I'm confused: for instance, television transmitting and receiving antennas are usually horizontal here but vertical in the UK, AM broadcast antennas are usually vertical are these for convenience or effectiveness? Spiral Logs are also right or left handed spiraled. Then there's FM...
at a point they become plain waves, how much will they be attenuated when 'received' by a spiral log periodic antenna Vs another dipole? Would an H field created by a loop antenna have less attenuation?
First you have to determine which corner of the field you are interested in along with where you can obtain a JOB! Getting something that involves working in the field will give you a glance about what RFE's do, I worked at many Job shops all over Silicone Valley before I found I could do and...
VERRY interesting! I'm interested in a longwire for general and ELF reception, not having several states to run it over like Wisconsin it will not be long enough but receivers aren't too touchy, at 30 Mhz, it will function as an end fire antenna with lobes off the ends, I guess. Still, it will...
I recall seeing radio stations' ground planes being copper wire
As a ham in the 50's it was the standard form to use the copper coated steel wire if not just copper and aluminum was considered a lessor approach, I had a 800' longwire of aluminum and it stretched.
Seems to me in that an antenna is carrying microamps at most that slightly higher resistance of steel Vs copper wouldn't matter.
What's the fault of this logic??