digital
A signal generator is used to shoot flares in the air from a ships deck. It can launch flares highter than typical flares and can be seen from greater distances.
The cheapest and easiest way is to improve the antenna. The most expensive, most sensitive, most selective receiver can't do anything without a decent signal to work with.
digital signal is less susceptible to signal degradation due to the nature of it's transmission signal which is either on or off and therefore less errors occur as analog is prone to signal degradation and loss that is why digital tv is crisp and clear and analog is somewhat blurry in comparison, also with higher bandwidth achievable by digital transmission more data is able to be transmitted.
channel
To answer this properly more context is needed but frequency is in most contexts continuous.
Travel nurses can travel longer distances, but most work within a smaller radius. It depends on your personal needs; if you are available to travel longer distances for longer assignments, agencies will often find more work for you at higher rates.
A high concentration of salt in soils is harmful for most plant species.
A signal generator is used to shoot flares in the air from a ships deck. It can launch flares highter than typical flares and can be seen from greater distances.
The top echelon used planes for longer distances and cars for shorter distances, most would use trains. The Nazis used more horses than any modern army and sometimes they would use trucks.
Gravity is the most effective over long distances.
Railroad expansion made Natural Resources more available in the US by allowing them to be transported over longer distances quickly. Lumber and coal were the most important to be transported in this manner.
it can if it degrades and leaches mercury. most won't.
There are typically two ways to transport cattle and they are usually determined by distance. For shorter distances, rail transport is the most common method. Longer distances usually require road motor vehicles specifically designed for this transport.
Stellar distances, like the distances of stars and galaxies from Earth
For most of the time, the only loss is the small amount absorbed by the atmosphere, which isn't significant. There is somewhat more loss temporarily, when the RF signal goes through rain. The major cause of the apparent loss in signal strength at great distances is the fact that the transmitted signal spreads as it covers more distance. So the farther you are from the source with an antenna of a certain fixed size, the less power your antenna collects, because the power is spread thinner.
Signal for "STOP"
Signal for "STOP"