How much electricity can a cb radio consum?

My sister spends a lot of time talking over a cb that she brought to my house. It's a huge antena with a base unit and power suply that rivals the local radio station..!!! I've seen my electric bill soar.. but i can't be sure it's her toy... How much electricity does one of those things consum?How much electricity can a cb radio consum?
They are 12 volts, something else is going on
If she is running legal input power the size of the antenna doesn't matter. The size of the power supply doesn't either.

It may be a co- incidence. Maybe the power company snuck up your rates or she is taking too many showers. The CB is probably only using something less than 100 watts.How much electricity can a cb radio consum?
go to the next one
Consum, what is consum? I have never heard of that word. I have, however, heard of "consume". Now if that is what you want to know, a LEGAL CB station is only going to draw about 15 to 20 watts. If she is smart, she has a legal one. If she isn't, I would advise you to put her off the air, pronto, or make her reduce to the legal 5 watts. While the FCC is generally not going to prosecute anyone running 100 watts or less, if there are complaints, that could bring them looking, and then the show is over, and you would be held as an accomplice. That is a very bad show and one that you do not want to be in. If her rig is causing interference with other peoples radios ot TV or anything else, and as stated the FCC comes looking, it is very bad news.

The size of the antenna is meaningless. It only radiates energy, it does not draw it in any way.How much electricity can a cb radio consum?
Are you sure that it's a CB radio (11 meters), or is it maybe a Ham Radio station (10, 20, 40, 80 meters). Ham radio use large antennas and put out a lot of RF power, drawing a lot of household AC current from the line.