They are entirely different things. CB channels are narrow band short range voice channels in the US. I'm not sure they even exist in the rest of the world. The shortwave broadcast bands are setup by international agreements and are designed for wideband broadcast channels. Since shortwave broadcasts can propagate around the globe when conditions are right stations must agree not to broadcast on each other's frequency allocations. since these shortwave stations also broadcast music, the channels need to be wider than voice only channels.I Watched some Videos on YouTube about CB and Shortwave.
If CB has 40 Channels how many Channels does Shortwave have?
The relationship between frequency and wavelength is that the product of the two is always equal to the speed of light.Ok now I think I am getting the hange of how it works.
Now CB has 40 CH. and it is an 11 Meter Band.
Am I Right this is telling me that all of the FREQ. in the CB Band are 11 Meters Long?
So the Start of one FREQ to the End of that same FREQ. will be 11 Meters Long.
Am I Right?
In some cases of extremely narrow band data modes like PSK-31 and FT8 it is possible for many transmitters to be on the same carrier frequency but not interfere with each other because of the modulation technique.International agreement and practical considerations determine the frequencies shortwave broadcasters will use. To avoid interference, broadcasters stick to what are essentially channels, with the center frequencies determined by the limits of the relievers used by listeners.
The difference between the numbered channels of US Citizen’s Band radio and the functional equivalent for shortwave is that there are no numbered channels for shortwave. The channels are specified by their center frequencies. Non-broadcast stations are more free to use odd frequencies, but because of similar reasons to broadcasters, they will generally stick to conventional ones.
Yes, digital modes that can pull data out of what sounds to the ear like nothing but noise are amazing and change some of the rules.In some cases of extremely narrow band data modes like PSK-31 and FT8 it is possible for many transmitters to be on the same carrier frequency but not interfere with each other because of the modulation technique.
It depends on LOTS of variables. A common rule of thumb back in the day when CB and handheld walkie-talkies (most of which used Channel 14) were real popular was one mile per watt under "typical" conditions. Even as a kid I was real skeptical about how accurate that could possibly be and I have no idea upon what it was based -- could well have been just some marketing guy's brainchild.I am looking at a CB Radio to talk to Truckers and People.
How Far will they go in Miles?
by Jake Hertz
by Aaron Carman
by Jake Hertz