ACROSS 2 Type of current flow 4 Symbol for tin 7 Unit of resistance, pl. 11 European equivalent to the U.L. 12 3 MHz to 30 MHz 13 Quickly changing portion of waveform 16 Theoretical 18 Consequence of under sampling 19 Lunar depressions 21 Electromagnetic surveillance thwarting technology 23 Greek letter 24 Greek letter 25 Boob tube 26 Chemical symbol for arsenic 27 Modulation type 29 Microwaves & __ magazine 31 Internet address 32 Start frequency, abbr. 33 Opposite of a LO 35 Performs a quantum physics feat 37 Added data to 39 Resistance to a change in motion 44 The obscuring of one celestial body by another 49 Unix, Linux or Windows, abbr. 50 Analog-to-digital, abbr. 51 Type of memory 52 Electromagnetic, abbr. 53 Home state of Los Alamos lab 54 Army-Navy spec 55 Integrated circuit 56 Opposite of O.D. 58 Came after the IBM PC 60 Room for error, pl. 63 Trig function 67 RF attenuator maker 68 Physicist Enrico _____ 69 Year subdivisions 70 Switch position 71 1.602E-19 Joules 73 Internet mail protocol 74 Component of product cost 75 Band of frequencies | DOWN 1 Small DIP package 2 Type of current flow 3 Common temperature scale 4 Reusable space vehicle 5 Noise figure, abbr. 6 Verify functionality 8 High data rate, abbr. 9 Type of average 10 Plant between Jupiter and Uranus 13 Texas city where Peter W. Dahl Co. makes Amateur radio equipment 14 Thread cutting tools 15 One state of matter 17 Front edge of a wing, abbr. 18 Modulation type 20 Mate to a TX 22 1.602E-19 Joules 27 PC follower 28 Greek letter (micro) 30 Chemical symbol for iron 32 BPF specification, abbr. 33 Symbol for helium 34 Opposite of O.D. 36 Family of TTL logic 38 Negative temperature coefficient, abbr. 39 Satellite of Jupiter discovered by Galileo 40 Unit of time, abbr. 41 Tuning extents 42 Time delay, abbr. 43 Angle described by hyp/opp 44 Transistor port 45 Front edge of a wing, abbr. 46 2*LO - RF, pl. 47 Symbol for tin 48 Electromagnetic, abbr. 54 Branch of the armed forces 55 One port of an amplifier 57 Government lawyer, abbr. 59 Short for terminal 60 Music Instrument Digital Interface 61 Automatic network analyzer, abbr. 62 Network department 64 Noise figure, abbr. 65 Nordic Mobile Telephone, abbr. 66 Ends of soldering irons 70 Logic gate 72 300 Hz to 3 kHz |