73 Amateur Radio Today – March 1978
Issue Contents:
The New Improved “Best Keyer Yet”
– updating MINI-mOS …… K4JEM 22
The Powerful Grounded Antenna
– thrives on poor soil …… W0SII 26
How To Cut Costs On Power Supplies
…… W9HDA 28
You Too Can Go Digital
…… K2RB 32
Old Receivers – A Hidden Gold Mine
– updating those ‘405 receivers …… W6GXN 36
Old Rigs Can Live Again!
…… K41PV 40
Novices Paddle Your Way To Happiness
– super deluxe Novice keyer …… W0OGX 44
How Many pF is That Capacitor Really?
…… WA0ZCR 48
Exorcising Power Supply Demons
…… K41PV 52
Meet the Plastic Wonder
…… K0OXB/5 58
Don’t Miss the Excitement of QRP
…… K9SGZ 62
Is Your Repeater Up-to-date?
…… W4VGZ 66
1220 MHz -use It Or Lose It!
…… K1CLL 72
New Protection For Your Car
– simple force field system …… WA4GIM 76
The Great cover-up
…… W4FXE 78
The World Of Tone Control
…… K3JE/2 82
Solve Those Parallel Problems
…… N3IE 88
At Last! An RFI-free Computer!
– the Cromemco Z-2 …… WB6JYK 92
Programming Coil Design
…… K7SBK 98
If You Want To Know Where You Are
…… Burhans 108
Do Biorhythms Really Work?
…… W4KFT 110
From CB To Amateur Radio
…… WB4POH 114
Improve Your HW-2021
…… K1WXK 130
How Much Power Does It Draw?
…… Fowler 131
Surprisingly Low-cost Lab Supply
…… W6GXN 132
Wireless Monitoring For the Bionic Ham
…… W8FX/4 134
Flash Project For Camera Fiends
…… WA6UNK 140
Kerchunk Counter
…… W6NUI 143
The Solar-powered Ham Station
– one hundred Watts yet! …… W5VBO 146
The Cheaper Chip
…… W7JSW 150
The Go Pro HT Mod
…… W8FX/4 152
A 2m Antenna for the Perfectionist
– with considerable details …… WB2AWG 154
Are You Afraid To Build?
…… W4RYO 156
A Brass Horn For X-band
– simple 10.5 GHz antenna …… W1SNN 164
A Cheapskate’s Circuit Board
…… WA1BVD 168
Good Grief Not the 225 Again?
– yes even more flexibility …… WB2LEI 172
Avoid An Overvoltage Catastrophe
…… W7RXV 176
The Amazing Zener Sweeper
– big deal gadget tests zener diodes …… WB4YOD 178
How To Use A Varactor
…… W6JB 182
Can A Diode Replace A Relay?
…… Staff 184
Shock the Car-burglar
…… W1DIS 185
73 Amateur Radio Today – March 1978
