Don't think that if your heart rate falls below 60 that something is wrong. It is not uncommon while at rest, to have your HR dip below 60. Some people have rates that drop into the 30'3&40's while sleeping. Our heart rates will fluctuate which, for most, is a normal variable.on't think that if your heart rate falls below 60 that something is wrong. It is not uncommon while at rest, to have your HR dip below 60. Some people have rates that drop into the 30'3&40's while sleeping. Our heart rates will fluctuate which, for most, is a normal variable.
GPS Receivers. Any navigation solution provided by a GNSS Receiver is based on the computation of its distance to a set of satellites, by means of extracting the propagation time of the incoming signals traveling through space at the speed of light, according to the satellite and receiver local clocks.
The enemy won't have TACAN receivers, but they will have VOR receivers. And lots of others. The military see a bigger picture than just compatibility of kit. TACAN does not have a greater range-it's line of sight, just like VOR. I don't know of any civilian aircraft with TACAN fitted. I would be surprised if there were any, other than those on military contracts, but I may be wrong.