Norman Lathrop Enterprises | Norman Lathrop Enterprises
Index To How To Do It Information
Lathrop Report On Newspaper Indexes
A profile of Norman Lathrop Enterprises
Last Updated
  Index Home  |   A-Z Subject Heading Guide    |   Keyword Search  |   Union List 

Detailed entries for one subject from the INDEX TO HOW TO DO IT INFORMATION.
Click on a see also (sa) or tracing (xx) to view detailed entries about a related subject.
The entries are in alphabetical order by magazine name and then in chronological sequence.
To obtain a copy of any magazine article contact your local public library or the publisher.


Build a low-drive, high-power all-band tetrode linear amplifier. Delivers 1500 watts output with 30 watts drive on all bands from 1.8 to 54 MHz.
CQ. THE RADIO AMATEUR'S JOURNAL Jul 1990 (v.46#7) pg. 60

The craftsman special. A homebrew HF linear amplifier. Build a 1500 watt output amplifier for 80 through 10 meters using only hand tools. Part 1. Overview of the bias and grip trip circuits, plus a discussion of the power supply.
CQ. THE RADIO AMATEUR'S JOURNAL Jan 1992 (v.48#1) pg. 12

The craftsman special. A homebrew HF linear amplifier. Part 2. Construction.
CQ. THE RADIO AMATEUR'S JOURNAL Feb 1992 (v.48#2) pg. 11

How to build a simple QRP transmitter control system that handles antenna switching, sidetone, and receiver muting.
CQ. THE RADIO AMATEUR'S JOURNAL Feb 1992 (v.48#2) pg. 40

How to build a super-simple computer interface for the Kenwood TS-440S and ICOM IC-735. This device is used to control the frequency of an HF transceiver via a computer program. Est. cost: $20.
CQ. THE RADIO AMATEUR'S JOURNAL Mar 1992 (v.48#3) pg. 42

Tip on using a computer mouse holder to attach a handitalkie to the dashboard of a car.
CQ. THE RADIO AMATEUR'S JOURNAL Aug 1992 (v.48#8) pg. 8

The Collins 30L-1 linear amplifier revisited. Maintenance and adjustment tips before operating this early 1960s equipment.
CQ. THE RADIO AMATEUR'S JOURNAL Nov 1995 (v.51#11) pg. 54

Build a 25 watt QRP booster. This 25 watt linear amplifier can be driven to full output with 2.5 watts of power. Use for CW, SSB and homemade or commercial QRP transmitters. The circuit may also be utilized as a driver for a high-power solid-state RF amplifier.
CQ. THE RADIO AMATEUR'S JOURNAL Jan 1996 (v.52#1) pg. 60

Go QRP with double sideband. A simple approach to low-power phone operation using the DSSC (double sideband suppressed-carrier). Includes schematics and construction tips for a DSB generator and a 1 watt linear amplifier
CQ. THE RADIO AMATEUR'S JOURNAL Feb 1997 (v.53#2) pg. 90
Correction CQ. THE RADIO AMATEUR'S JOURNAL May 1997 (v.53#5) pg. 78

Some tips on power FETs (field-effect transistors). Includes a practical circuit for a 60 watt linear amplifier for use with a 6 meter SSB transceiver.
CQ. THE RADIO AMATEUR'S JOURNAL Mar 1997 (v.53#3) pg. 64

A linear amplifier keying circuit for the ICOM-706. Build a solid-state switching circuit so that a 180ma relay coil can be triggered by another relay that is rated to handle only 20ma.
CQ. THE RADIO AMATEUR'S JOURNAL Jun 1997 (v.53#6) pg. 24
Added Info CQ. THE RADIO AMATEUR'S JOURNAL Sep 1997 (v.53#9) pg. 8

Modifications for updating the Heathkit Warrior linear amplifier (80 through 10 meter amateur bands) and adding 160 meters.
CQ. THE RADIO AMATEUR'S JOURNAL Nov 1997 (v.53#11) pg. 30

Build a 30 meter 100 watt amplifier. A project for the experienced builder. Uses a Motorola MRF 172 FET and has a gain of 14 dB, developing 100 watts when driven from any 4 watt QRP transmitter.
CQ. THE RADIO AMATEUR'S JOURNAL Feb 1998 (v.54#2) pg. 9

Listen to both receive frequencies simultaneously on the Kenwood TS-950SD transceiver. Simple-to-implement technique requires only stereo earphones, a low-power audio stereo amplifier and some shielded wiring.
DX MAGAZINE Jun 1990 (v.2#6) pg. 10

Using part of the eight-pin din jack on a Yaesu FT-1000D to trigger an external relay (which in turn keys the relay in a linear amplifier).
DX MAGAZINE Apr 1991 (v.3#4) pg. 18

Build an RS-232 converter for serial-compatible Kenwood radios (TS-140, TS-440, TS-850, TS-940 and TS-950) which lets them connect to a personal computer. The computer can handle such functions as logging, duping, scoring, packet spotting, and CW memory keying.
DX MAGAZINE Oct 1991 (v.3#10) pg. 10

Make a lowpass-filter that inserts between microphone and preamp and reduces RF electromagnetic interference getting into ham transmitter.
POPULAR ELECTRONICS [2] Jun 1991 (v.8#6) pg. 77