WELCOME to the Web version of the Index To How To Do It Information .

The Index To How To Do It Information (HTDI Index) was created to aid public and college libraries in locating how-to articles in magazines to which they subscribe. Therefore, you must contact your local public library to see if they have the issue referred to by the index within their magazine collection or will secure a copy from another library. Also ask your librarian to provide you with the current address of the publisher of the magazine and check to see if the publisher can provide a copy of the article. In November 2012, the magazine collection accumulated by Norman Lathrop Enterprises and itemized in the UNION LIST was donated to the Akron-Summit County Public Library (60 S.High St., Akron OH 44326). For a fee, they may be willing to provide a copy of most articles cited in the HTDI Index. Contact them at 330-643-9075 or online at www.akronlibrary.org.

New visitors to this site are encouraged to take a few minutes to read the Introduction, Organization, and Past & Future pages.

Access to the Web version of the Index To How To Do It Information (HTDI) is being made freely available to individuals and institutions subject to the understanding that the entire HTDI Index is a copyrighted work and all rights are reserved to Norman Lathrop Enterprises (2342 Star Dr., Wooster OH 44691). The contents of this database, in whole or in part, may not be offered for sale by anyone except Norman Lathrop Enterprises. Online users of the HTDI Index are subject to monitoring by NLE using statistical and analytical programs. Access to the online version of the HTDI Index is offered solely at the discretion of Norman Lathrop Enterprises and access is not guaranteed to continue.

The following two book formats of the Index To How To Do It Information are considered to be the only archival versions.
1963-1989 INDEX . This accumulation replaced 27 annual supplements and three accumulations covering the period 1963-1989. 8.5″x11″ paper-bound, two-volume set. Published 1993.
1990-1999 INDEX . This accumulation replaced six annual supplements (1990, 1994, 1995, 1996, 1997, 1998), completed indexing of three missing years (1991, 1992, 1993), and published the 1999 entries for the first time. 8.5″x11″ hardbound volume. Published 2002.

A/B antenna switchbox for F-type coaxial connectors. Est. cost: $6.
AUDIO AMATEUR 3/1988 [Aug 1988] (v.19#3) pg. 46
Added Info AUDIO AMATEUR 4/1990 [Oct 1990] (v.21#4) pg. 5
Added Info AUDIO AMATEUR 2/1991 [Apr 1991] (v.22#2) pg. 61

Electronic antenna switch automatically switches a TV antenna input to video game or computer and back. Est. cost: $30.
COMPUTERS & ELECTRONICS Nov 1982 (v.20#11) pg. 53

QSK operation. Build an all solid state antenna T/R switching unit for linear operation.
CQ. THE RADIO AMATEUR'S JOURNAL Dec 1981 (v.37#12) pg. 60

Automatic antenna disconnector. The antenna is disconnected from the transceiver whenever the transceiver power supply is turned off. Est. cost: $10.
CQ. THE RADIO AMATEUR'S JOURNAL Apr 1984 (v.40#4) pg. 44

An automatic antenna selector for the Kenwood TS-430S. Est. cost: $30. Includes tips on applying the same technique to other rigs.
CQ. THE RADIO AMATEUR'S JOURNAL Aug 1984 (v.40#8) pg. 18

An antenna selector switch with automatic grounding.
CQ. THE RADIO AMATEUR'S JOURNAL Mar 1987 (v.43#3) pg. 28

How to build your own coaxial relay.
CQ. THE RADIO AMATEUR'S JOURNAL Aug 1987 (v.43#8) pg. 20

Build a coax antenna switch for your station. Provides switching for four antennas. Est. cost: $11.
CQ. THE RADIO AMATEUR'S JOURNAL Feb 1989 (v.45#2) pg. 18

Simplified remote antenna switching uses solid-state control relays.
CQ. THE RADIO AMATEUR'S JOURNAL May 1989 (v.45#5) pg. 54

Build a low-cost remote antenna switch which eliminates the need for additional coax when installing a second antenna.
CQ. THE RADIO AMATEUR'S JOURNAL Jan 1996 (v.52#1) pg. 23

Beverage antenna users front-end saver for 160 and 80 meter rigs. This protection circuit disconnects the receive antenna during transmit, shorts the antenna input to ground, provides a keying relay for a linear amplifier, and permits QSK operation with a non-QSK amplifier.
CQ. THE RADIO AMATEUR'S JOURNAL Feb 1997 (v.53#2) pg. 32

Remote antenna switching made easy. Circuits for switching up to four antennas from a single feed line.
CQ. THE RADIO AMATEUR'S JOURNAL Oct 1997 (v.53#10) pg. 42

How to build an automatic antenna switch for ICOM transceivers. Electronic antenna switch that automatically turns on a transceiver and then selects the correct antenna.
CQ. THE RADIO AMATEUR'S JOURNAL May 1998 (v.54#5) pg. 30
Correction CQ. THE RADIO AMATEUR'S JOURNAL Jul 1998 (v.54#7) pg. 8

Some hands-on observations of the pros and cons of various coaxial antenna switches.
DX MAGAZINE Sep 1991 (v.3#9) pg. 10

Remote antenna switcher. Choose any of four antenna by flipping a switch. Only one coax-cable runs to transmitter or receiver. Est. cost: $15.
ELECTRONICS ILLUSTRATED Nov 1967 (v.10#6) pg. 66

Flexo SWL Aerial. An antenna/antenna-switching system than improves shortwave reception by adding flexibility to a single-antenna system, making it seem as if you have more than one antenna. Gives you more choices in antenna length, angle-of-signal arrival, and propagation conditions.
HANDS-ON ELECTRONICS May-Jun 1986 (v.3#3) pg. 65

Build a phasing box to operate an array of two vertical antennas.
POPULAR COMMUNICATIONS Sep 1994 (v.13#1) pg. 71

Antenna switching methods to use the same antenna for sending and receiving.
POPULAR ELECTRONICS [1] Mar 1974 (v.5#3) pg. 99

Build a remote antenna selector switch which permits selecting from among six antennas.
POPULAR ELECTRONICS [1] Jan 1979 (v.15#1) pg. 65

More diode circuits. (1) Clamping circuits for either the positive or negative portion of an AC signal. (2) Protective circuits prevent reverse-voltage damage. (3) Meter guard circuit limits maximum voltage that can reach a meter. (4) Noise generator and amplified noise generator circuit uses a Zener diode. (5) Circuit to monitor the symmetry of an AC waveform. (6) RF switching circuit, antenna switcher, and transceiver switch for connecting radio equipment to an antenna.
POPULAR ELECTRONICS [2] Jun 1996 (v.13#6) pg. 66
Correction POPULAR ELECTRONICS [2] Dec 1996 (v.13#12) pg. 6

Copyright © by Norman Lathrop Enterprises. All Rights Reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means (electronic, mechanical, print photocopying, recording or otherwise) without the prior expressed permission of Norman Lathrop Enterprises, except as permitted by law.