Wednesday, December 22, 2010

Lesson 19: General Class Exam Course G4E

Hello again!  Here is lesson 19 covering HF mobile operation and emergency power sources.  These questions are fairly straight forward. 

As far as privileges go, there is really no difference between mobile station operation and any other type of amateur station.  Mobile HF operation does have some peculiarities and limitations.  The primary limitation of mobile operation is the limited size of the mobile antennas.  It is not practical to drag a half-wave dipole for 80 meters on top of your car.  There are compact antennas designed specifically for mobile operation, but no matter how well the antenna is designed, it will never work as well as a full sized antenna.

This section also deals with alternative energy sources such as solar, wind, and gasoline generators.  For the generator power questions, the theme is safety.  Whenever you operate a gasoline powered generator, make sure the area is well ventilated.  Carbon monoxide poisoning kills a lot of people every year!  Even when operating a generator outside, precautions must be takes to ensure exhaust fumes are not entering the home, tent, or shack.   

There is one question that needs to be memorized:

- The common power produced by a photovoltaic (solar) cell is 0.5 VDC.

That's about it.  If you have any comments, questions, or suggestions, please feel free to leave them in the comments box.  Until next time...