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73 Magazine (May 1961)

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Book Id: WPLBN0003304805
Format Type: PDF eBook :
File Size:
Reproduction Date: 2011

Title: 73 Magazine (May 1961)  
Volume: Vol 1, No. 8
Language: English
Collections: Periodicals: Journal and Magazine Collection, 73 Magazine
Publication Date:
Publisher: Amateur Radio Publishing, Inc.


APA MLA Chicago

73 Magazine (May 1961). (1961). 73 Magazine (May 1961). Retrieved from

Description: 73 Magazine May 1961 (#8)

Table of 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 Index courtesy of

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