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.

A simple shock mount for your microphone is built from brass tubing, rubberbands, and steel wire.
AUDIO AMATEUR 1/1972 [Oct 1972] (v.3#1) pg. 12
Added Info AUDIO AMATEUR 2/1972 [Jan 1973] (v.3#2) pg. 18

Circuit for a tester which will track down opens and shorts in microphone cables.
AUDIO AMATEUR 2/1975 [Nov 1975] (v.6#2) pg. 26

A tall (20-ft.), portable microphone stand is made from chromed tubing and screws together in 3-ft. sections.
AUDIO AMATEUR 4/1976 [Dec 1976] (v.7#4) pg. 26

Install a body-capacitive touch-control switch on a microphone to replace the press-bar or spring-loaded switch. Requires much less finger exertion to activate the microphone.
CQ. THE RADIO AMATEUR'S JOURNAL Jun 1980 (v.36#6) pg. 11

Build your own microphone equalizer. Provides bass and treble controls plus 20 dB of gain to compensate for variations in microphone levels.
CQ. THE RADIO AMATEUR'S JOURNAL Jul 1984 (v.40#7) pg. 24

How to connect a combination headset/boom microphone to your TR2500 walkie-talkie to allow hands-free operation.
CQ. THE RADIO AMATEUR'S JOURNAL Jun 1985 (v.41#6) pg. 38

AGC-EQ speech processor (speech compressor/equalizer). An amplitude processor to decrease the wide dynamic range of the human voice prior to transmission. Will add approximately 6 dB to your average signal strength. Circuit includes continuously variable high- and low-frequency shelving-type equalizers to improve readability with all voice-microphone combinations, plus an LED monitor to assure optimum control settings. Battery powered. May be used by itself or as a "pre-processor" for SSB rigs with RF clipping.
CQ. THE RADIO AMATEUR'S JOURNAL Jan 1986 (v.42#1) pg. 28

Simple microphone interface. Used to connect an electret microphone to an HF transceiver. Also includes a simple audio oscillator circuit that will produce a good sinewave signal for transmitter test or tune-up.
CQ. THE RADIO AMATEUR'S JOURNAL Mar 1986 (v.42#3) pg. 32

Add your own lockout switch to the Azden PCM-463 microphone to prevent unintentional QSY's. Est. cost: $2.
CQ. THE RADIO AMATEUR'S JOURNAL Mar 1988 (v.44#3) pg. 42

Control box for HF transceivers features a remote PTT (push-to-talk) switch, extendable microphone, microphone preamp and equalizer, sidetone, and remote headset volume control.
CQ. THE RADIO AMATEUR'S JOURNAL Sep 1988 (v.44#9) pg. 36

Upgrade a bargain microphone to improve the sound by installing a simple equalizer circuit.
CQ. THE RADIO AMATEUR'S JOURNAL Sep 1988 (v.44#9) pg. 54

Backup bonanza. Build a simple switchbox to transfer the antenna, speaker, key and microphone from one transmitter to another by pressing a single button.
CQ. THE RADIO AMATEUR'S JOURNAL Dec 1990 (v.46#12) pg. 18

Tip on converting the articulated arm from an inexpensive desk lamp into an adjustable holder for a microphone.
CQ. THE RADIO AMATEUR'S JOURNAL Jan 1991 (v.47#1) pg. 36

An adjustable microphone stand is fabricated from a telescoping antenna, a microphone cartridge, and a magnetic base.
CQ. THE RADIO AMATEUR'S JOURNAL Feb 1991 (v.47#2) pg. 40

Enhanced audio quality on transmit. (1) Circuit for a simple microphone step-down impedance matcher for using a 50K ohm microphone with a modern transmitter that has a 600 ohm microphone input circuit. (2) Microphone selection. (3) Microphone amplifier circuits with bass and treble boost circuitry. (4) Speech processing, etc.
CQ. THE RADIO AMATEUR'S JOURNAL Feb 1994 (v.50#2) pg. 82

Audio volume limiter adjusts the output from a microphone to match the optimum input setting for the amplifier. Est. cost: $48 (kit).
ELECTRONICS EXPERIMENTERS HANDBOOK 1992 pg. 36, 16

Auto switching from transmit to receive and back again.
ELECTRONICS ILLUSTRATED Nov 1963 (v.6#6) pg. 33

Tape compressor. A device which will automatically adjust recording sensitivity to correctly record loud or soft noises at the same sound level. Also useful to maintain constant amplitude with CB or ham radio transmission.
ELECTRONICS ILLUSTRATED Jul 1966 (v.9#4) pg. 57

The FET VOX, an electronic device which automatically switches a transceiver to the transmit mode when you start speaking, without flipping a switch manually.
ELECTRONICS ILLUSTRATED May 1968 (v.11#3) pg. 61

Adjustable speech clipper will amplify microphone output and keep it at a constant modulation level for greater intelligibility.
ELECTRONICS ILLUSTRATED May 1968 (v.11#3) pg. 71

Integrated circuit speech compressor fits inside microphone shell. Microphone output remains constant within 3 dB. Introduces no distortion.
ELECTRONICS ILLUSTRATED Nov 1969 (v.12#6) pg. 29

A microphone monitor has a VU meter and volume control to control the signal fed tape recorder at the microphone instead of at the recorder. Good for remote recording or when inputting from several mikes. Powered by two 9-volt batteries.
ELECTRONICS ILLUSTRATED Sep 1971 (v.14#5) pg. 38

Microphone splitting made easy.
ELECTRONICS NOW Dec 1996 (v.67#12) pg. 28

Solving microphone-splitting problems.
ELECTRONICS NOW Jan 1997 (v.68#1) pg. 72

Design and use of microphone splitters.
ELECTRONICS NOW Feb 1997 (v.68#2) pg. 25

Shield that input. Shielded banana plug adapter eliminates unwanted signals when feeding low-level signals to high-gain outputs. Est. cost: $2.
ELEMENTARY ELECTRONICS Jan-Feb 1967 (v.3#3) pg. 74

Bandpass amplifier turns the output from a high quality microphone into the "telephone voice" effect. Uses the type 741 op-amp.
ELEMENTARY ELECTRONICS May-Jun 1975 (v.15#3) pg. 84

Conversion circuit for a condenser microphone using a 12AY7 vacuum tube.
GLASS AUDIO 5/1997 (v.9#5) pg. 53

Transmitter test keyer. Automatic/manual microphone keying device (and tone injector) simplifies bench testing of modulation and r-f amplifier sections of radio transceivers.
MODERN ELECTRONICS [2] Feb 1989 (v.6#2) pg. 56

Trans-VOX. Transistorized, supersensitive, voice-operated relay turns transmitters, tape recorders and other equipment on and off. You simply plug your microphone into Trans-VOX and plug Trans-VOX into the device to be controlled. Est. cost: $19.
POPULAR ELECTRONICS [1] Jan 1967 (v.26#1) pg. 57

Voice-operated microphone with speech compression.
POPULAR ELECTRONICS [1] Feb 1970 (v.32#2) pg. 81

Electronic circuit responds to a voice input to a microphone and automatically lowers the volume of the music.
POPULAR ELECTRONICS [1] Jun 1971 (v.34#6) pg. 58
Correction POPULAR ELECTRONICS [1] Oct 1971 (v.35#4) pg. 100

Circuit for a solid-state substitute for a line-matching transformer.
POPULAR ELECTRONICS [1] Feb 1980 (v.17#2) pg. 97

Circuit to match the unbalanced output of a tape deck, microphone, etc., to the input of a balanced system.
POPULAR ELECTRONICS [1] Oct 1980 (v.18#4) pg. 84

Unimod. A battery-powered sound-effects generator can create tremolo, panning, and ring-modulation sounds. Designed for use with microphones and electric and electronic musical instruments. Est. cost: $30.
POPULAR ELECTRONICS [1] Feb 1981 (v.19#2) pg. 65

Vocal zapper makes you a "superstar". This circuit cancels the "phantomed" center channel of a stereo record and lets you substitute your own voice.
POPULAR ELECTRONICS [1] May 1981 (v.19#5) pg. 78

Microphone amplifier circuit and companion audio-power amplifier circuit.
POPULAR ELECTRONICS [2] Jul 1992 (v.9#7) pg. 72

Three microphone stands. (1) Flexible gooseneck on a camera tripod. (2) Two mike holder for table or podium. (3) Hand-held broomstick extension for a long reach.
POPULAR MECHANICS Feb 1972 (v.137#2) pg. 54

Microphone holder which fits around your neck and holds the microphone at the right height and angle is made from a coathanger.
POPULAR SCIENCE May 1973 (v.202#5) pg. 136

Increase the output from your present microphone with this modulation booster. Provides more modulation and less hum pickup when using a long mike cable. Est. cost: $4.
RADIO-TV EXPERIMENTER #798 Aug-Sep 1966 (v.21#1) pg. 69

A lightweight, directional baffle for a microphone is made from plastic drinking straws.
RADIO-TV EXPERIMENTER Jun-Jul 1968 (v.24#3) pg. 75

A lightweight directional baffle for a microphone is made from plastic soda straws.
SCIENCE & ELECTRONICS [1] Dec 1970-Jan 1971 (v.28#6) pg. 81

Citizens band voice shaper, a device that attenuates the lower frequencies of your voice making it crisper and more understandable.
SCIENCE & MECHANICS May 1968 (v.39#5) pg. 83

Citizens band speech processor incorporates bass and treble controls, up to 20 dB of clipping, and up to 40 dB of speech AGC, in one convenient control box.
SCIENCE & MECHANICS May 1968 (v.39#5) pg. 85

Tip on making a "pop filter" for voice-over microphones.
VIDEOMAKER May 1995 (v.9#11) pg. 8

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