Years ago I bought some handheld CBs with rubber duckie antennas for caravanning, and, like others, quickly found that the output is attenuated by the glass so badly that you can't talk to another driver even close by...
So I got mag mount antennas, and discovered that range improved, but not only are there folks using language I don't want to hear, there are a lot of idiots out there with CBs that are intentionally being as obnoxious as possible.
Then I got my first set of frs radios and discovered that the higher frequency isn't impeded by glass nearly as bad, and a little frs handheld has much better range and clarity than a handheld CB, the batteries last much longer... Great for caravanning. And, like mentioned before, great for talking to a backer, or just using around the campsite.
For caravanning I have two frs radios that have removable duckie antennas and came with mag-mount antennas. Increases the range at least a little, but I'm not sure it's a big deal. Besides, I think they are against the FCC rules. I think legally frs radios have to have a permanent, non-removable antenna attached directly to the transmitter. I think that's why frs radios with removable antennas are hard to find. Radio Shack and Midland both made a model with a mag-mount antenna, but they only offered them for a short time. I think the FCC made them stop. But that's speculation.
Originally Posted by Blackhat6mike
We use GMRS/FRS radios from the TT to our boat and while positioning the TT at the campsite. Over water, they have several miles of range on our units. Come in very useful on lakes when I'm out fishing or hiking. Five watts work well enough to cover our needs and do well on the road especially if you have the right antenna setup. You can code them so no one else can understand you.
Just to pick a nit, you really can't code them so no-one can hear you. Strictly speaking. They've been marketed as 'privacy codes,' but they don't really give you any privacy. They make it sound like encryption when it's really selective hearing.
If you set a code, it really means that you can only hear other radios that are using that same code. However, radios that are not using a code, and other devices like scanners and such, can still hear everything you say.
This is kind of a soap box of mine. Partly due to deceptive marketing (promising privacy), and partly due to the fact that I think they impede proper radio etiquette.
The etiquette part comes from the old rule about monitoring a frequency for a couple minutes to see if someone else is using it, before you start using it. If you have a code set, you are prevented from hearing other people using that frequency, and could talk right over them without ever knowing.