Total posts : 45366
Thank you very much for your analysis. You are a true font of knowledge and resource to appreciate. (I enjoyed trying to follow your calculations for the elevated AM antenna, where I lurked…)
I am a bit over my head here. (I had some technical training in the ancient past, although RF was not one of my strengths.)
When you talk about the car radio at a mile away, what is a reasonable signal strength (based on your table) that a car radio should be able to pick up (a) with decent listenablilty and (b) as a marginal but recognizable signal (i.e. threshhold before disappearing into the static of background noise, or even another station)? Would that be like 2 mv/M for (a) or another number?
Also, what does that third (rightmost) column mean? Is that the number of mV/M which is 6 dB above the middle column?
Finally, what (if any) is the dB gain of a half-dipole anetenna? And what kind of signal loss can one expect feeding it, say with 25 feet of RG-8/U or RG-58 and common Radio Shack style (but soldered) PL-259 connectors?
Many thanks (in advance) for your time and wisdom.