Save space. Economy of motion. Everything is right there. Could be misery memory from using stiff buryflex as jumpers, bored nothing better to do for a few weeks. Is the antenna function for field strength useful for anything? When would it change or be different from swr?It's not ideal, but I don't think it would hurt anything. Any particular reason you want to stack them?
you mean sans coax?The field strength is for measuring the strength of the signal radiated from your antenna. So you can take it out into the yard, have someone key the radio. Then look at the signal strength in each direction from your antenna to see if any obstructions like the house, power lines, trees affect the signal. Some people drive around in their car and plot the readings on a map. Presumably to quantify any improvements they are making, but I have never felt the need.
Yes, the little antenna thingy picks up the signal.you mean sans coax?