Except for the UK most of the planet only allows use of 40 channels for CB. Big fines and all sort of trouble goes to those who modify CBs to operate outside the 40 channel limit. Frequencies above and below CB are used by other people who send Police around to those who do not respect the limits.
Channel 40 Frequency: 477.400 Simplex Highway Channel
Public service agencies don't use CB radio for official communication.
Used, about $40 - 50 is all you'll get out of it.
Most truckers that are on the road use channel 19 to get in touch but ussually move to a different channel to talk to someone privatelly.
CB radio ch 9
channel 9
Supposedly, they monitor Channel 9, but it's really rare to find police officers/police agencies which actually do. If a police officer is monitoring the CB radio, they're more likely to be monitoring Channel 19 than Channel 9.
Sure, you can use it; but it might not do a very good job. If you're listening to AM, you're receiving between 0.5-1.6 MHz, whereas FM is coming to you at 88-108 MHz. The CB antenna is designed to be resonant at 27 MHz.
That depends on what type of handheld radio you're using. They do make handheld CB radios. They have both 40 channel handhelds, and single channel handhelds (some of which may actually be three channel with the purchase of additional radio crystals). The single channel handhelds typically use Channel 14 as a default. FM radios, such as those used in FMRS, GMRS, Business Radio, emergency services, etc. do not use the same frequencies as CB radios, and cannot communicate with them.
50-60 kmpl
Yes, many people in the word still use a CB radio. Truck drivers use CB radios each day.
CB radios and scanners are available from BestBuy. For instance, Midland CB radios cost a price of $78.98. In contrast, the Midland 40-channel CB radio costs $54.98.