Mercury would only appear an an old tube radio which uses a mercury-vapor rectifier.
These are pretty rare, and glow either green or blue, as opposed to a normal tube's orange/red color.
Valve is another term for vacuum tube, used in old radios.
No, radio communications are not only used with 2 way radios. They can be picked up on many frequencies, that are not necessarily considered to be 2 way radios.
Auomatic Frequency Control. Newer radios have it too. It's just not advertised and there is no longer a switch to turn it off like on the old radios.
Marine band radios are two-way radios which are used either in a military setting or by officers for easy communication. The purpose of these radios is to get a greater range of communcation.
Cobra MicroTalk radios are two way radios or walkie talkies that allow you to keep in contact with someone a certain distance away without making a phone call.
Valve is another term for vacuum tube, used in old radios.
They have become popular old
Mercury was used in old thermometers because mercury expands when it reaches a certain temperature, so it was a really good "gauge". Now, they stopped making thermometers with mercury as the liquid since it was very poisonous. i hope you liked the answer!
Mercury is commonly used in the batteries of cell phones and laptops.
Tube Choke Condensor Vibrator (used in HV battery supplies) Valve is another term for vacuum tube, used in old radios.
Mercury used to have river valleys, but now they are old and dried-up.
The most common are mercury and alcohol. Mercury is being phased out because it is toxic. Alcohol thermometers are used to replace the old mercury thermometers.
Mercury. Note: mercury is very toxic. If you find mercury (for example, if you break an old mercury thermometer), check with your local poison control center for instructions to dispose of it safely.
The metalloids is combined in transistor radios to make them of high quality.
More likely used for a toy car.
Commercial truck drivers do commonly used CB Radios. As for Cobra CB Radios, the commonness would depend on where the professional truck is and if the Cobra CB Radios are offered and popular in that location.
No, radio communications are not only used with 2 way radios. They can be picked up on many frequencies, that are not necessarily considered to be 2 way radios.