73 Amateur Radio Today – February 1997

73 Amateur Radio Today – February 1997

Issue Contents:

Amateur Radio and Linux

– Software home-brewing is here! …… W9IF 10

Elegant Rotating Revisited

– An enhanced Beam-aiming circuit …… W1ZZB 17

Antenna Tuners

– Do we really need them? …… W6YBT 21

The Topbander

– A cheap and easy antenna tuner for 160 meters …… W8ND 23

Build The Turbo Digi-sniffer

– A simple-to-make digital field strength meter …… AH2HR/5 26

Sumas Mountain High

– Building a self-sufficient repeater tower on a British Colombian mountain …… VE7BID 30

Add A Microphone Pre-amplifier to Your 10 Meter Rig

– Low-cost speech processing can increase your power …… AD5X 32

The Telegraph

– A little device that changed the world …… K8KWD 36

The Gel Cell Storage Battery

– A great little power supply …… KB4ZGC 41

In Search of Higher Power

– and a safe connection for it …… W6YBT 70

Antenna? What Antenna?

– A stealth antenna farm for a small lot …… KB4ZGC 71

Hentenna Footnotes

– Using an EZNEC model to build a sample …… AD1B 75

Hamtronics RWX Storm Watch Weather Broadcast Receiver

– Hams need to know about storm emergencies …… WA3WGV 34

The Ten-tec T-kit 6 Meter Transverter

– Here’s a fine introduction to modern kit-building …… N0BLX 44

Communications Simplified Part 14

…… K2OAW 64

Simple T-r Circuit

…… WU0L 67

The Quest for the Ideal QTH

…… K2FX 80

73 Amateur Radio Today – February 1997

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