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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.

xx   AUDIO

Symposium on electronics. (1) Traffic light controller. (2) Lamp flashers. (3) Audio amplifier and noise generator. (4) Waterfall sound. (5) Pseudo-random-sequence generator.
MODEL RAILROADER Feb 1990 (v.57#2) pg. 116

Symposium on electronics. (1) Circuit for expanding the number of contacts of any switch machine. (2) X-block connections for single crossover. (3) Telegraph key sound effect. (4) Mars flasher. (5) Diesel sound. (6) Random light sequencer for interior building lights. (7) Traffic light synchronization.
MODEL RAILROADER May 1990 (v.57#5) pg. 102
Correction MODEL RAILROADER Aug 1990 (v.57#8) pg. 98

The SDX-1. A diesel sound system you can build. Part 1. Design background, kit and parts, and assembly.
MODEL RAILROADER Feb 1991 (v.58#2) pg. 88

The SDX-1. A diesel sound system you can build. Part 2. Start of printed-circuit-board assembly and testing.
MODEL RAILROADER Mar 1991 (v.58#3) pg. 126

The SDX-1. A diesel sound system you can build. Part 3. Assembly and testing continued.
MODEL RAILROADER Apr 1991 (v.58#4) pg. 102

The SDX-1. A diesel sound system you can build. Part 4. Completing assembly and connecting to a layout.
MODEL RAILROADER May 1991 (v.58#5) pg. 111

The SDX-1. A diesel sound system you can build. Part 5. Applications and modifications for the completed synthesizer.
MODEL RAILROADER Jun 1991 (v.58#6) pg. 92

Circuit for reproducing the sound of a mechanical refrigerator car.
MODEL RAILROADER Aug 1991 (v.58#8) pg. 113
Added Info MODEL RAILROADER Nov 1997 (v.64#11) pg. 127
Added Info MODEL RAILROADER May 1992 (v.59#5) pg. 100

Circuit for a three-chime diesel horn.
MODEL RAILROADER Nov 1991 (v.58#11) pg. 138

Using low-power audio amplifier ICs in model railroad audio applications. Some tips.
MODEL RAILROADER Feb 1992 (v.59#2) pg. 108

Using sound recording and playback chips on your model railroad layout.
MODEL RAILROADER May 1995 (v.62#5) pg. 118

A carload of sound. Use the electronics from inexpensive "Memo-Mate" message recorders to build sound systems that fit inside a model boxcar.
MODEL RAILROADER Jun 1996 (v.63#6) pg. 88

Sound decoder installation. Digital Command Control makes walkaround sound a reality.
MODEL RAILROADER Jan 1999 (v.66#1) pg. 148

Getting the most from the SoundTraxx DCC Digital Sound Decoder. Some installation tips.
MODEL RAILROADER Oct 1999 (v.66#10) pg. 98

Electronic circuits for model railroads. (1) Electronic diesel horn sounder. (2) Crossing-gate flasher. (3) Track-control signal.
POPULAR ELECTRONICS [2] Mar 1995 (v.12#3) pg. 28