The result is a signal with considerably less content, one that would fit within existing 6 MHz black-and-white signals as a phase modulated differential signal.

Even low-power 27 MHz signals can sometimes propagate over long distances.

Since February 1, 2009, the U.S. Coast Guard only monitors distress signals from emergency position indicating radio beacons that broadcast using digital 406 MHz signals.

This 915 MHz signal is sent at 500 kbit/s using the IAG protocol in 256-bit packets.

SPOT does not use the 406 MHz signal nor the system of satellites.

Then up-converts the 250-750 MHz signals to this range which is expected by current receivers.

The station first experimented with FM broadcasts in 1948, but didn't begin regular broadcasts until the 89.3 MHz signal was allocated in 1967.

This allows the 700 MHz signals to penetrate buildings and walls easily and to cover larger geographic areas with less infrastructure (relative to frequencies in higher bands).

The transmitter receives signal from the RFS, amplifies and multiplies the signal, sending a 2290 MHz signal to the antenna.

Virtually all of these cards ran at a speed of 3.58 MHz, derived by dividing the 7 MHz signal on the expansion bus by a factor of 2.