73 Amateur Radio Today – November 1997

73 Amateur Radio Today – November 1997

Issue Contents:

How to Design Your Own HF Antenna

– No excuses after this …… VA3ACK 10

Readin’ Writin’ and Robotin’

– Is your high school entered in FIRST? …… Gray 17

Our Friend Pythagoras

– Pop quiz: Who can state the Pythagorean Theorem? …… N0BLX 19

Electronic Construction from A to Z

– Everything you wanted to know about building stuff but were afraid to ask …… AA0XI/vK5FN 21

The Table Topper 160-meter Loop

– Compact low-noise -and effective …… G2BZQ 27

Colby’s Do Something Box

– How about making a great gift gadget for grandkids? …… W7RXV 31

A Baycom-style HF PSK Modem

– Build a packet modem from scratch …… VK4AOC VK4TN 46

Variable Current Load Bank

– A bright idea for testing power supply parameters …… W7DE 71

EMTECH’s NW40 Transceiver Kit

-another winner for QRP …… AC4HF 41

My Strange QSO -mysterious voices and guarded messages

– a typical Sunday afternoon in the Midwest? …… NZ9E 64

RF Voltage and Power Meter

– Going up? In power that is? Find out with this easy-to-build instrument …… WI5W 67

Communications Simplified Part 23

– The series concludes …… K2OAW 81

Remembering Ivan’s “Woodpecker”

– Or was it? …… Onymous 82

73 Amateur Radio Today – November 1997

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