It is a model 77-882, I got it for free from my grandpa for free. I put it in my jeep in place of my cobra 19. I sold that one for $20 cause I need money. The midland works really good except when I talk the ant warning light comes on, I assume that it has something to do with the SWR? Does this radio have a feature that protects it from burning out of the SWR is to high? It is a 1977 model. Also it has a nob labled Delta Tune with - 0 and + what does this nob do? what does the anl switch do? and what does the NB switch do? Sorry I am so cluless, my grandpa doesn't remember anything about it.
Do not know about the ant warning light, but the delta tune is used to tune in incoming signals that might be slightly off frequency.
Will try to find out about the warning light.
Some one else said it will come on when swr comes above 3:1 It is weird though because it is off when olding the transmit button but when you actually talk it come on and gets brighter the louder you talk.
That light is measuring the reflected power, and that is what a high SWR does, a mistuned antenna with a high SWR reflects power back towards the transmitter instead of radiating it. So since a CB transmits with a bit more power (it's not theoretically supposed to but most do) when you're talking, that's why the antenna light lights up more when you're talking since the antenna is reflecting back more power while you are talking.
Get the antenna tuned or find out what's wrong with it. An improperly installed mount is the usual cause of abnormally high SWR, and that problem is usually caused by the mount not getting a good enough electrical ground connect. Like being bolted to a painted surface instead of bare metal after the paint was ground away.