France Guide: Couchette travel, at night, is available on some trains in all classes. In these "couch cars" you lie down dressed, but it's infinitely bet ter than sitting up, or slumping, all night long.
Economy lodging in France guide is an encyclopedic subject but it is by no means difficult to master its rudiments. Early in your stay in France guide provide yourself with the working tools if you plan to travel as an individualist. These should include regional hotel lists, securable through the French Government Tourist Office at 127 Champs-Elysees, and a detailed guide, either the current Guide Michelin (which, however, boils its cultural notes almost down to nothing), or a Baedeker-type volume such as Nagel's (in English). With these and a venturesome spirit and a little French, or even with no French at all, you're set to go.
In frequency scanning, frequency-sensitive phase shifters are inserted between radiators, and the radio frequency of the radar is varied. A very simple frequency-sensitive phase shifter is a section of wave guide, which produces a phase shift proportional to the change in frequency and to the length of the guide. By feeding the radiators of the array through a wave guide, and by folding the guide back and forth on itself so as to increase the lengths between radiators, fairly large shifts may be obtained with relatively small variations in frequency. The necessary variations in frequency are obtained by applying a suitable control signal to an electronically tuned MOPA transmitter. |
