73 Amateur Radio Today – May 1961 Issue

73 Amateur Radio Today – May 1961 Issue

Return to 73 Amateur Radio Today Index


Issue Contents:

G4 Zed Smith

– A tri-bander without loading coils or traps can be tuned from the shack! …… W8VVD 9

Feedline Economy

– Open-wire line just may become popular again after you read this one …… W9HOV 18

Propagation Special Feature

– Taking a look at sunspot numbers with an eye to predictions …… K2IGY 20

Testing the KT-200 Receiver

– Next month we have some of Bill Orr’s ideas for modifying this receiver …… K2DHA 22

Ham Calendar

– Just what we’ve been needing. Should go nicely with a 35 hour clock …… K4YNO 25

Build a Vary-volt

– A piece of test equipment that is worth its weight in something or other …… W2WYM 26

Moonstruck

– Eyewitness account …… W8GUE/6 28

Moon Chart

– How to get radio signals back from the moon reduced to a chart …… K2TKN 31

Sideband Exciter

– What with Turret construction and a simple circuit you may try this one …… W2NQS 32

Testing the Knight GDO

– Porsche-pushing ham tests Knight GDO likes it tells all …… W2OKU 35

Propagation Charts

– What time to where when on what bands… Probably …… K2IGY 36

Custom Resistors

– How to move precision resistors to the value you need …… Pafenberg 38

AC Calibration of Your VOM

– We’ll be giving you more and more on precision and calibration …… Bentley 40

Ohms by the Yard

– This ties in with the precision resistors on page 38 …… K5JKX/6 41

Blowers

– What size blower you need to keep a cool rig …… W3KET 42

How Low The Fi

– Our technical article: examining the audio stages of your receiver …… Staff 44

73 Amateur Radio Today – May 1961 Issue

Return to 73 Amateur Radio Today Index


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