12/30/2002 Engineering & Science Crossword Puzzle

All of these crossword puzzles were created using the fabulous Crossword Express (now called " Magnum Opus") software.

ACROSS 1 Having directivity 9 Greek letter 10 His law describes some EM induction properties 11 SIP x 2 13 Adjacent Channel Power Ratio 15 Logic gate 17 Synchronous Digital Hierarchy 19 Logarithmic ratio 20 Data conversion device 22 Exponent that returns the original number 23 Greek letter 24 Measure of luminosity 28 Components of a parts list 30 Current-voltage phase mnemonic 31 Lubricant 32 Professor's student instructor 33 Official Space Shuttle designation 35 Indium Phosphide 36 Infrared 37 Transmission control protocol 38 Radio Magnetic Interference 39 Direct Memory Access 40 Line of sight 41 Chemical symbol for arsenic 42 Powers pneumatic devices 44 Genetic twisted double helix 46 Greek letter for frequency 47 Circuit substrate 48 Opposite of FIR 50 Hang the program 52 Type of diode for microwave frequencies 55 High voltage resistor manufacturer in Montreal, Quebec 58 Transformer interwinding connection 59 Precision landing system 60 Electronics manufacturer with "meatball" logo 61 Special diode that can be switched 62 1.602E-19 Joules 64 Inventor of the pre-quantum atomic model 66 Dual Inline Package 68 Length times width 71 Non-return to zero 72 Used to separate capacitor plates, pl.	DOWN 1 Digital Signal Processor 2 Basic digital filter class 3 Type of model airplane control system, abbr. 4 Transverse Electromagnetic 5 One port of an amplifier 6 O3 7 Analog-to-digital 8 Display the source code (old command) 9 Substrate for mounting components 12 Personal Digital Assistant 13 Reciprocals of impedances 14 Be behind in phase 16 Frequencies where only a real component exists 18 RF cable and connector vendor in Williston, VT 20 Route signals to multiple locations 21 Type of distribution, squared 22 It's the loneliest number, per the TDK 24 Chemical symbol for beryllium 25 Kind of numerical average for AC waveforms 26 Transmission control protocol 27 Half of a DIP 29 Total Access Communication System 34 Specialized mobile radio 35 Intermodulation distortion 36 Charged particles 42 Conductor size unit 43 Type of chart 45 Section of a circle 48 Indium phosphide 49 Radio Frequency Interference, abbr. 51 PC follower 53 Of the navy 54 ___-back transformer 56 Digital pattern coding type 57 Power distribution system 60 1e9 CPS 63 Forward Error Correction 64 Low- to mid- frequency connector 65 Logic gates 67 Ratio of circumference to diameter 69 Component of product cost 70 PC follower
Answer below