"Ham Radio Magazine" was a periodical that ran for almost 22 years from 1968 to 1990. Use this indexed search to quickly find what you'd like to look at and then go purchase the scanned magazines (On CD, elsewhere, or occasionally from some generous download website) or look for the old paper magazine at used bookstores.
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| By Title Text | By Author Callsign | By Year | Category |
|---|---|---|---|
| Article | Author | Page | Issue |
|---|---|---|---|
| Speech processing | W1DTY | 60 | Jun 68 |
| Compressor, dual channel | W2EEY | 40 | Jul 68 |
| Audio amplifier and squelch circuit | W6AJF | 36 | Aug 68 |
| Headphones, lightweight | K6KA | 34 | Sep 68 |
| Speech processor, logarithmic | WA3FIY | 38 | Jan 70 |
| Filter, tunable peak-notch audio | W2EEY | 22 | Mar 70 |
| Speech processor for ssb, simple | K6PHT | 22 | Apr 70 |
| Filter, variable bandpass audio | W3AEX | 36 | Apr 70 |
| Filter-frequency translator for CW reception, Integrated audio | W2EEY | 24 | Jun 70 |
| Speech amplifiers, curing distortion | Allen | 42 | Aug 70 |
| Filter for CW, tunable audio | WA1JSM | 34 | Aug 70 |
| Oscillator-monitor, solid-state audio | WA1JSM | 48 | Sep 70 |
| Filter, simple audio | W4NVK | 44 | Oct 70 |
| Distortion and splatter | K5LLI | 44 | Dec 70 |
| Speech clipping in single-sideband equipment | K1YZW | 22 | Feb 71 |
| Audio-oscillator module, Cordover | WB2GQY | 44 | Mar 71 |
| Audio agc principles and practice | WA5SNZ | 28 | Jun 71 |
| Phone patch | W8GRG | 20 | Jul 71 |
| Rf clipper for the Collins S-line | K6JYO | 18 | Aug 71 |
| Audio CW filter | W7D1 | 54 | Nov 71 |
| Microphone preamplifier with agc | Bryant | 28 | Nov 71 |
| Speech processor, IC | VK9GN | 31 | Dec 71 |
| Audio-oscillator module, Cordover | Correction | 80 | Dec 71 |
| Audio fitter mod (HN) | K6HIL | 60 | Jan 72 |
| Pre-emphasis for asb transmitters | OH2CD | 38 | Feb 72 |
| Squelch, audio-actuated | K4MOG | 52 | Apr 72 |
| Tape head cleaners (letter) | K4MSG | 62 | May 72 |
| Intercom, simple (HN) | W4AYV | 66 | Jul 72 |
| Speech clipping (letter) | W3EJD | 72 | Jul 72 |
| Audio filters, inexpensive | W8YFB | 24 | Aug 72 |
| Audio filters, aligning (HN) | W4ATE | 72 | Aug 72 |
| Hang agc circuit for ssb and CW | W1ERJ | 50 | Sep 72 |
| Speaker-driver module, IC | WA2GCF | 24 | Sep 72 |
| Tape head cleaning (letter) | Buchanan | 67 | Oct 72 |
| Speech clippers, rf | G6XN | 26 | Nov 72 |
| Speech clippers, rf | G6XN | 12 | Dec 72 |
| Oscillator, audio, IC | W6GXN | 50 | Feb 73 |
| Speech clipper, IC | K6HTM | 18 | Feb 73 |
| Audio module, a complete | K4DHC | 18 | Jun 73 |
| Speech clippers, rf | Added notes | 58 | Aug 73 |
| Rf speech processor, ssb | W2MB | 18 | Sep 73 |
| Microphone, using Shure 401A withDrake TR.4 (HN) | G3XOM | 68 | Sep 73 |
| Impedance match, microphone (HN) | W5JJ | 67 | Sep 73 |
| Speech clipper, IC | Added notes (letter) | 64 | Oct 73 |
| Filter, lowpass audio, simple | OD5CG | 54 | Jan 74 |
| Speech clippers, rf | Added notes | 72 | Sep 74 |
| Speech processing, principles of | ZL1BN | 28 | Feb 75 |
| Speech processing, principles of | Added notes | 75 | May 75 |
| Audio transducer (HN) | WA1OPN | 59 | Jul 75 |
| Notch filter, tunable RC | WA5SNZ | 16 | Sep 75 |
| Audio filter, tunable, for weak-signal communications | K6HCP | 28 | Nov 75 |
| Headphone cords (HN) | W2OLU | 62 | Nov 75 |
| Speech processing, principles of | Added notes | 64 | Nov 75 |
| Binaural CW reception, synthesizer for | W6NRW | 46 | Nov 75 |
| Microphones, muting (HN) | W6IL | 63 | Nov 75 |
| Audio-power integrated circuits | W3FQJ | 64 | Jan 76 |
| Speech compressor (HN) | Novotny | 70 | Feb 76 |
| Speech processing technique, split audio band | W1DTY | 30 | Jun 76 |
| Dynamic microphones (C&T) | W1DTY | 46 | Jun 76 |
| RC active filters using op amps | W4IYB | 54 | Oct 76 |
| Synthesizer-filter, binaural | W6NRW | 52 | Nov 76 |
| Audio mixer (HN) | W6KNE | 66 | Nov 76 |
| Increased flexibility for the MFJ Enterprises CW filters | K3NEZ | 58 | Dec 76 |
| Binaural CW reception, synthesizer for | Comment | 77 | Feb 77 |
| Notch filter, tunable RC | Comment | 78 | Apr 77 |
| Receivers, better audio for | K7GCO | 74 | Apr 77 |
| Gain control IC for audio signal processing | Jung | 47 | Jul 77 |
| Speech processor, audio-frequency | K3PDW | 48 | Aug 77 |
| Speech processor, audio-frequency | Short circuit | 68 | Dec 77 |
| Voice-operated gate for carbon microphones | W6GXN | 35 | Dec 77 |
| Active filters | K6JM | 70 | Feb 78 |
| Speech systems, improving | K2PMA | 72 | Apr 78 |
| RC active filters (letter) | W6NRM | 102 | Jun 78 |
| Headphones, dual-impedance (HN) | AB9Q | 80 | Jan 79 |
| Variable-frequency audio filter | W4VRV | 62 | Apr 79 |
| Duplex audio-frequency generator with AFSK features | WB6AFT | 66 | Sep 79 |
| Speech processor, split-band (letter) | WA2SSO | 6 | Dec 79 |
| Audio processor, communications for reception | W6NRW | 71 | Jan 80 |
| Speech processing, split-band (letter) | Schreuer, N7WS | 74 | Feb 80 |
| Microphones and simple speech processing | W1OLP | 30 | Mar 80 |
| Speech processors (letter) | K3ND | 6 | Aug 80 |
| Microphones and simple speech processing | Letter, W5VWR | 6 | Sep 80 |
| Voice-band equalizer | WB2GCR | 50 | Oct 80 |
| Phone patch using junk-box parts | K7NM | 40 | Oct 80 |
| Better audio for mobile operation | K6GCO | 48 | Feb 81 |
| Heath HW-2036 mods (letter) | Mosher, E.A. | 8 | Jun 81 |
| Handheld transceiver, audio amplifier for | N1RM | 38 | Jul 81 |
| Simulated carbon microphones, using with Amateur transmitters | W9MKV | 18 | Oct 81 |
| Add-on selectivity for communications receivers | G4GMO | 41 | Nov 81 |
| TR-2400, external microphone for (HN) | WB2IFV | 64 | Mar 82 |
| Audio response, tailoring (HN) | N1FB | 42 | May 82 |
| CW acoustical filter | W7BI | 22 | Jan 83 |
| Audio filter building blocks | KB0CY | 74 | Jul 83 |
| CW and RTTY, digital audio filter for | W1OER | 60 | Aug 83 |
| Audio filter design, elliptic lowpass | W3NQN | 20 | Feb 84 |
| Repeaters, speech synthesis for | N9EE | 79 | Mar 84 |
| Audio to microwave amplifier, build your own | Gruchalla, Michael | 12 | Mar 84 |
| Telephone ring indicator, visual (HN) | W2QLI | 62 | Apr 84 |
| CW and RTTY, digital audio filter for | Short circuit | 199 | Aug 84 |
| Automatic gain control, an audio | K7NM | 24 | Sep 84 |
| Audio oscillator to pulse generator conversion (HN) | W0DLO | 50 | Oct 84 |
| Understanding telephones | N6ARE | 39 | Sep 85 |
| Phone patches, building and using | N6ARE | 34 | Oct 85 |
| Passive audio filter design, part 2: highpass and bandpass filters | Niewiadomski, S. | 41 | Oct 85 |
| Audio filter design, computer-aided | KE2J | 15 | Oct 85 |
| Passive audio filter design, part 2: highpass and bandpass filters | Comments, W3NQN | 8 | Nov 85 |
| Passive audio filter design, part 3 | Stefan Niewiadomski | 29 | Jan 86 |
| Improving the audio on the ICOM IC-27 | KD8KZ | 61 | Feb 86 |
| Converting mobile microphones for handheld VHF transceivers | KD8KZ, WB3JCC | 79 | Mar 86 |
| Understanding telephones | Comments, KD7WL | 9 | Apr 86 |
| Extended-range VU meter | WB6JNN | 59 | Sep 86 |
| Advanced CW processor | W6NRW | 25 | Dec 86 |
| Aural vco provides relative metering | K1ZJH | 97 | Jan 87 |
| Modifying microphones | VE7CB/W6 | 81 | Jan 87 |
| Sight and sound CW | W6NRW | 10 | Jan 88 |
| Power speaker enhances mobile operation | K1ZJH | 83 | Jan 88 |
| Build a QSO "beeper" | KF6CU | 38 | Jan 88 |
| Processor for code tapes | W4ULD | 61 | Sep 88 |
| Code practice oscillator (weekender) | N2DCH | 65 | Oct 88 |
| Solo-16 Acoustic CW Speaker:The Weekender, | K1BQT | 12 | Mar 89 |
| Multiband Speech Processor | KL7ISA | 32 | Apr 89 |
| Ham Notebook: Mobile HT Audio, The Near Ultimate Solution | W9PXP | 68 | Aug 89 |
| An improved AGC Circuit | W8WFH | 72 | Sep 89 |
| 75-Hz wide audio filter | W2OBJ | 14 | Jan 90 |
| A deep notch resonant filter | W0THM | 63 | Feb 90 |