73 Amateur Radio Today – December 1980
Issue Contents:
Who Really Invented Radio?
– the twisted tale of Nathan B. Stubblefield …… WB2NEL 36
In Search of the Elusive SES
– track solar activity with this simple VLF receiver …… WA3UER 42
An Even Better IC Timer
– better than what? …… WA0PBQ 46
Direct Printing FAX
– Part II: constructing the facsimile recorder …… WB8DQT 52
A 600-mHz Universal Counter
– you’ll freq out over this one …… W4VGZ 58
Top-banding the DX-60B
– Part II: a companion vfo …… WB1ASL 64
An Amp for QRPp Addicts
– build this resistive step attenuator for low low power work …… WA0RBR 68
The Center-fed Bizarre
– would you believe an indoor antenna for 80? …… N6RY 72
Clean Sweep for the FT-221
– don’t miss the action …… WB0LLP 82
A New Frontier
– weekends were made for.. 10 FM! …… K4TWJ 84
Scanner Magic for Heath’s 2036
– grab your October 79 issue for Part I of this project …… WA4BZP 88
HV Power Rectifiers
– amplifier builders should read this one …… WB2WIK 92
Cheap Connectors for Half-inch Hardline
– at your neighborhood hardware store …… WD4LWC 100
The Microwave Midget
– this WEFAX converter features something different -an active mixer …… W3KH 106
The Amazing Bobtail… Our Readers Respond
– more ideas for using and modifying this easy-to-build antenna …… W8HXR 110
Single-tone Paging for Wilson HTs
– simple circuit should work with many rigs …… W4BF 112
Teletext and Viewdata: Are You Ready for the Information Boom?
– coming soon to a living room near you: video data services …… WB9KPT 120
Double-duty CW Keyboard
– helps you on receive as well as transmit …… K1GN 126
Sixteen Channels of Digital Delight
– do-it-Yourself data acquisition …… WB4UHY 132
A Computer-controlled Talking Repeater
– Part III: interfacing to the microcomputer …… WA6AXX 138
Make a Microcomputerist Smile
– build him this EPROM eraser …… AL7G 148
Build a Talking Digital IDer
– K20AW redesigns his IDer at last …… K2OAW 162
73 Amateur Radio Today – December 1980
