Originally Posted by carver
If I had a tower 50 feet tall, and was trying to opperate a CB, I might get out to 15 - 20 miles. Might get some skip, but with only a battery, I wouldn't have enough power to talk very far at all. Same thing with the Ham radio, but with cleaner channels, and less interferance I could talk a little further. Radios that "Talk" need a linear to power them up. A cheap linear designed to key up with the final 3 watts from a CB radio, or Ham radio, will give you about 200 watts final output. Now I can talk about 50 miles under ideal conditions.
sorry.. but that's mostly incorrect!
I'm a ham operator..
My mobile rig is a 50w icom 12v unit mounted in my truck. I can work all over this country and beyond. ( with larger antenna ) I have a 'linear' amp as well. with skip.. no problem working stuff 'on the other side'
for cb.. if you have a clear line.. figure a rule of thumb of about 1w per mile depending on what gear the other guy has.
ps.. gear on 12v, and a charged car battery can 'work' quite a bit. 200w drain on a 12v bat is a 16ah deal. cheap walmart car battery will do that for qite a while. PLENTY of talk time. you are acting like you are gonna get 5 words out after you key up the mic... just ain't so..
BTDT got the qsl to prove it..