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73 Magazine (September 1971)

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Book Id: WPLBN0003304681
Format Type: PDF eBook :
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Reproduction Date: 2011

Title: 73 Magazine (September 1971)  
Volume: Vol. 1, No. 132
Language: English
Collections: Periodicals: Journal and Magazine Collection, 73 Magazine
Publication Date:
Publisher: Amateur Radio Publishing, Inc.


APA MLA Chicago

73 Magazine (September 1971). (1971). 73 Magazine (September 1971). Retrieved from

Description: 73 Magazine September 1971 (#132)

Table of Contents
Transformerless Power Supplies - Theory and six practical circuits ...... K3SVC 14 Build a Solid-State Module TV Camera - And amaze your friends ...... W0KYQ 18 An Experimenter's Guide to IC Substitution - Getting HEP to IC's ...... K5JKX 28 Microwaves and Microsounds - How to see underwater ..... K1CLL 38 RF Power Measurement with Hot Carrier Diodes - Rf wattmeters for up to 450 MHz ...... W6AJF 42 IC/Photocell Compressor/AGC Unit - With no noise buildup problems ...... W2EEY 47 The Theft Stopper - Booby trap for the car ...... K4EPI 52 A Marketing Man's Approach to Ham Radio - Ham radio is a product ...... WB8CDU 53 Multi-Channel Operation with the Motorola HT-200 - HT-200 modification ...... K8YQH 59 Facsimile for the Radio Amateur: Part II - Scan this thriller continued from last month ...... Dean 66 Man-Made Interference - Its causes and cures ...... WB5DEP 78 A Linear Stable VFO - Better a VFO than a UFO ...... W8RHR 86 General Class Study Guide XII - Some general questions on TVI, etc ...... Staff 89 Effective Heat Sinking - Preventing fried germaniums and silicons ...... K5ZBA 101 The Spider - Interfacing your transceiver and linear ...... W4RIZ 104 "Say Coo, Say Coo, Day Eckees" - Some hams don't speak English ...... W7OXD 107 An IC Pulser for the Amateur Experimenter - For the many unpulsed IC's around ...... W6GXN 112 A DC Isolator for Phone Lines - Keep out of trouble ...... Weinstein 117 New Hope for Learning the Code - Learn the code in two hours ...... WA1KWJ 119 73 Tests the Gonset Super Scan Receiver - Minding 8 FM channels at once almost ...... W2NSD 122 New Mark Products $30 Battery-Boost Regulator - Works from 11 volts up ...... Brown 124 Index courtesy of

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