What does 2m mean in ham radio?
The term 2 Meters commonly refers to a frequency band assigned for Amateur Radio use. The band limits in the USA for the 2 Meter amateur band are 144-148MHz. 2 Meters refers to Wavelength. It means that the radio waves transmitted at 144 million times per second (MHz) are 2 meters in length.
What is 70cm ham?
The 70-centimeter or 440 MHz band is a portion of the UHF radio spectrum internationally allocated to amateur radio and amateur satellite use. The band is also popular for Amateur Satellite Service. Due to its size, it’s the lowest frequency ham band which can support amateur television transmissions.
How far can ham radios go?
As I’ve mentioned, Ham radios have an average range between 2 miles and 18 miles. But, if you’ve recently purchased a Ham radio (especially a handheld unit), the manufacturer might claim that you can get substantially more range than 2-18 miles. In fact, many 2-way radio units claim as much as 36 miles of range.
How far will a 5w ham radio transmit?
So according to our rule-of-thumb, 2 people around 6 feet tall using a 5 watt handheld two-way radio, used on flat ground with no obstacles, will have a maximum range of approximately 6 miles.
When to use which, 6M / 2m / 70cm?
70cm- Good band, since its UHF its good to have in the city or around tall buildings or inside of buildings because its wavelength penetrates obstacles better. Ah, but it can get complicated. If you want to communicate with others, you go to whatever frequency band they are. That is very simple.
What is the frequency of a 70 cm ham radio?
In a previous Shack Talk article, we looked at the 2 Meter band plan. The 70 cm band (420 to 450 MHz) is another popular ham band for simplex and repeater operating, so we’ll take a look at that band now. The first thing we need to know is the FCC frequency authorization for our particular license class.
Which is better a 70cm or 6m antenna?
So all three can potentially only travel the same distance. Higher frequencies may penetrate structures better. Plus higher frequencies mean a smaller antenna which makes building antennas with more gain easier. So a multi element 70cm is easier to make, smaller, less expensive, than a 6m one.
Which is better a 70cm or 6m repeater?
Given identical applied power more antenna gain means a stronger signal. Therefore the better penetration may be the result of more power, not the frequency. 70cm repeaters tend to work better for this reason and are well suited to lower power radios such as handy talkies.