| article | author | page | issue | |
| 3-500Z tube failure (HN) | AG6K | 78 | Oct 82 | + |
| 300-Hz crystal filter for Collins receivers | W1DTY | 58 | Sep 75 | + |
| 300-Hz crystal filter for Collins receivers (letter) | G3UFZ | 90 | Jan 78 | + |
| 5CX1500A power pentode (HN) | K9XI | 77 | Oct 82 | + |
| Alliance rotator improvement (HN) | K6JVE | 68 | May 72 | + |
| Alliance T-45 rotator Improvement (HN) | WA0VAM | 64 | Sep 71 | |
| Amateur Radio equipment survey number two | W1SL | 52 | Jan 80 | + |
| An Exclusive Look At Kenwood's TS-950S | NXIG | 28 | Oct 89 | + |
| An improved AGC Circuit | W8WFH | 72 | Sep 89 | + |
| Annunciator bell for the Kantronics KPC2 | K1ZJH | 22 | Aug 86 | + |
| Argonaut 509 conversion for 30 meters (HN) | AA4LL | 49 | Oct 84 | + |
| Atlas 180, improved vfo stability (HN) | K6KLO | 73 | Dec 77 | + |
| Atlas 210 transceiver, sldetone (HN) | ZL2RP | 67 | Mar 82 | + |
| Atlas 210 transceiver, sldetone (HN) | Short circuit | 79 | Oct 82 | + |
| Atlas 350 AGC circuit, modifications (HN) | K0RL | 42 | May 82 | + |
| Autek filter (HN) | K6EVO, WA6WZQ | 83 | May 79 | + |
| C-64 and GLB PK-1 interface circuit | W2EHD | 87 | May 87 | + |
| CAT control system for the Yaesu FT-757GX | SM6CPI | 26 | Nov 87 | + |
| CDE tailtwister rotor, pulse-position control of | WE4EXW | 30 | Jan 81 | + |
| CDR AR-22 rotator, fixing a sticky | WA1ABP | 34 | Jun 71 | |
| Cleanup tips for amateur equipment (HN) | Fisher | 49 | Jun 78 | + |
| Clegg 27B, S-meter for (HN) | WA2YUD | 61 | Nov 74 | + |
| Collins 32S cooling (HN) | N1FB | 74 | Nov 79 | + |
| Collins 32S PA disable jacks | N1FB | 65 | Mar 80 | + |
| Collins 32S, improved stability for (HN) | N1FB | 83 | May 79 | + |
| Collins 32S-1 CW modification (HN) | W1DTY | 82 | Dec 69 | + |
| Collins 32S-1 CW modification (HN) | Correction | 76 | Sep 70 | + |
| Collins 32S-1, updating | N1FB | 76 | Dec 78 | + |
| Collins 32S-3 audio (HN) | K6KA | 64 | Oct 71 | + |
| Collins 32S-series ALC meter improvement (HN) | W8FR | 100 | Nov 77 | + |
| Collins 516F-2 high-voltage regulation (HN) | N1FB | 85 | Jun 79 | + |
| Collins 516F-2 low-voltage and bias modification (HN) | N1FB | 68 | Jul 81 | + |
| Collins 516F-2 power supply, transient protection for | W6AD | 31 | Apr 81 | + |
| Collins 516F-2 solid-state rectifiers (HN) | N1FB | 91 | Feb 79 | + |
| Collins 51J product detector (letter) | K5CE | 6 | Oct 78 | + |
| Collins 51J PTO restoration | W6SAI | 36 | Dec 69 | + |
| Collins 51J, modifying for ssb reception | W6SAI | 66 | Feb 78 | + |
| Collins 70E12 PTO repair (HN) | W6BIH | 72 | Feb 77 | + |
| Collins 70K-2 PTO, correcting mechanical backlash (HN) | K9WEH | 58 | Feb 75 | + |
| Collins 75A-4 modifications (HN) | W4SD | 67 | Jan 71 | + |
| Collins 75A-4 receiver, improving overload response in | W6ZO | 42 | Apr 70 | |
| Collins 75A-4 receiver, improving overload response in | Short circuit | 76 | Sep 70 | + |
| Collins 75A4 avc mod (letter) | W9KNI | 63 | Sep 75 | + |
| Collins 75A4 hints (HN) | W6VFR | 68 | Apr 72 | |
| Collins 75A4 noise limiter | W1DTY | 43 | Apr 76 | + |
| Collins 75A4 PTO, making it perform like new | W3AFM | 24 | Dec 74 | + |
| Collins 75A4, increased selectivity for (HN) | W1DTY | 62 | Nov 75 | + |
| Collins 75S CW sidetone (HN) | N1FB | 93 | Apr 79 | + |
| Collins 75S frequency synthesizer | W6NBI | 8 | Dec 75 | + |
| Collins 75S frequency synthesizer | Short circuit | 85 | Oct 76 | + |
| Collins 75S receiver, (HN) | N1FB | 94 | Oct 78 | + |
| Collins 75S-3 alignment (HN) | N1FB | 79 | Jan 81 | + |
| Collins 75S-series crystal adapter (HN) | K1KXA | 72 | Feb 77 | + |
| Collins KWM-2 KWM-2A, owners' reports | WB1CHQ | 22 | Mar 81 | + |
| Collins KWM-2, updating | W6SAI | 48 | Sep 79 | + |
| Collins KWM-2/KWM-2A modifications (HN) | W6SAI | 80 | Aug 76 | + |
| Collins KWM2 transceivers, improved reliability (HN) | W6SAI | 81 | Jun 77 | + |
| Collins R-388(51J), inter-band calibration stability (HN) | W5OZF | 95 | Sep 77 | + |
| Collins R390 rf transformers, repairing (HN) | WA2SUT | 81 | Aug 76 | + |
| Collins R390A modifications | WA2SUT | 58 | Nov 75 | + |
| Collins R390A, improving the product detector | W7DI | 12 | Jul 74 | + |
| Collins R392, improved ssb reception with (HN) | VE3LF | 88 | Jul 77 | + |
| Collins receivers, 300-Hz crystal filter for | W1DTY | 58 | Sep 75 | + |
| Collins S-line backup power supply (HN) | N1FB | 78 | Oct 79 | + |
| Collins S-line monitoring (HN) | N1FB | 78 | Aug 79 | + |
| Collins S-line power supply mod (HN) | W6IL | 61 | Jul 74 | + |
| Collins S-line receivers, improved selectivity | W6FR | 36 | Jun 76 | + |
| Collins S-line spinner knob (HN) | W6VFR | 69 | Apr 72 | |
| Collins S-line transceiver mod (HN) | W6VFR | 71 | Nov 72 | |
| Collins S-line, improved frequency readout for the | W1GFC | 53 | Jun 76 | + |
| Collins S-line, owners' report | WB1CHQ | 12 | Apr 81 | + |
| Collins S-line, reducing warm-up drift | W6VFR | 46 | Jun 75 | + |
| Collins S-line, rf clipper for | K6JYO | 18 | Aug 71 | + |
| Collins S-line, rf clipper for | Correction | 80 | Dec 71 | + |
| Collins S-line, syllabic vox system for | W0IP | 29 | Oct 77 | + |
| Comdel speech processor, increasing the versatility of (HN) | W6SAI | 67 | Mar 71 | |
| Computer control of ICOM R-71, 271, 471, and 751 radios | NG6Q | 47 | Apr 86 | + |
| Cornell-Dubilier rotators (HN) | K6KA | 82 | May 75 | + |
| DenTron 160XV transverter, stabilizing the (Weekender) | WB2QLL | 46 | Jun 81 | + |
| Drake gear, simple tune-up (HN) | W7DIM | 79 | Jan 77 | + |
| Drake R-4 receiver frequency synthesizer for | W6NBI | 6 | Aug 72 | |
| Drake R-4 receiver frequency synthesizer for | Modification: letter | 74 | Sep 74 | + |
| Drake R-4B and TR-4, split-frequency operation | WB8JCQ | 66 | Apr 79 | + |
| Drake R-4C product detector, improving (HN) | W3CVS | 64 | Mar 80 | + |
| Drake R-4C receiver audio Improvements (HN) | W3CVS | 79 | Jan 81 | + |
| Drake R-4C, cleaner audio for (HN) | K1FO | 88 | Nov 78 | + |
| Drake R-4C, electronic bandpass tuning in | Horner | 58 | Oct 73 | + |
| Drake R-4C, new audio amplifier for | WB0JGP, K8RRH | 48 | Apr 79 | + |
| Drake R-4C, new product detector for (HN) | WB0JGP | 94 | Oct 78 | + |
| Drake R4C backlash, cure for (HN) | W3CVS | 82 | May 79 | + |
| Drake T-4X transmitters, improved tuning on 160 meters (HN) | W1IBI, W1HZH | 81 | Jan 79 | + |
| Drake TR-22C sensitivity improvement (HN) | K7OR | 78 | Oct 79 | + |
| Drake TR-4, using the Shure 401A microphone with (HN) | G3XOM | 68 | Sep 73 | + |
| Drake TR-7 transceiver, Woodpecker noise blanker for (HN) | K1KSY | 67 | Feb 81 | + |
| Drake W-4 directional wattmeter | W1DTY | 86 | Mar 68 | |
| Eimac chirp and drift (HN) | W5OZF | 68 | Jun 70 | + |
| EX crystal and oscillator | WB2EGZ | 60 | Apr 68 | |
| Extending receive coverage for the IC-02 and IC-04 | WB6GTM | 77 | Jul 86 | + |
| Extending receive coverage for the IC-02 and IC-04 | Comments: WB6GTM | 6 | May 87 | + |
| Factory service (letter) | W6HK | 6 | Jul 80 | + |
| Feedline loss, calculating with a single measurement at the transmitter (HN) | K9MM | 96 | Jun 78 | + |
| FT-101E, 10-meter preamp for | K1NYK | 26 | Jul 81 | + |
| Galaxy feedback (HN) | WA5TFK | 71 | Jan 70 | + |
| Genave transceivers, S-meter for (HN) | K9OXX | 80 | Mar 77 | + |
| Hallicrafters HT-37, improving | W8NIF | 78 | Feb 79 | + |
| Hallicrafters HT-37, increased sideband suppression | W3CM | 48 | Nov 69 | + |
| Ham radio techniques | W6SAI | 63 | May 84 | + |
| Ham radio techniques, fifty years ago | W6SAI | 58 | Jun 84 | + |
| Ham Radio Techniques: "white noise" revisited | W6SAI | 79 | Oct 87 | + |
| Ham-3 rotator, digital readout for | K1DG | 56 | Jan 79 | + |
| Ham-M modification (HN) | W2TQK | 72 | May 76 | + |
| Ham-M rotator automatic position control | WB6GNM | 42 | May 77 | + |
| Ham-M rotator control box, modifications of (HN) | K4DLA/W1RDR | 68 | Nov 80 | + |
| Ham-M rotator torque loss (HN) | W1JR | 85 | Jun 79 | + |
| Ham-M rotator torque loss (HN) | Short circuit | 92 | Sep 79 | + |
| Hammarlund HQ215, adding 160-meter coverage | W2GHK | 32 | Jan 72 | |
| Heath CA1, ten-minute timer from (HN) | K8HZ | 74 | Jul 68 | |
| Heath HD-10 keyer, positive lead keying (HN) | W4VAF | 88 | Nov 78 | + |
| Heath HD-1982 Micoder for low-impedance operation | Johnson, Wesley | 86 | May 78 | + |
| Heath HG-10B vfo, independent keying of (HN) | K4BRR | 67 | Sep 70 | + |
| Heath HM-2102 vhf wattmeter, high power calibration for (HN) | W9TKR | 70 | Feb 76 | + |
| Heath HM-2102 wattmeter mode (letter) | K3VNR | 64 | Sep 75 | + |
| Heath HM-2102 wattmeter, better balancing (HN) | VE6RF | 56 | Jan 75 | + |
| Heath HO-10 as RTTY monitor scope (HN) | K9HVW | 70 | Sep 74 | + |
| Heath HR-2B external speaker and tonepad (HN) | N1FB | 89 | Nov 78 | + |
| Heath HW-100 incremental tuning (HN) | K1GUU | 67 | Jun 69 | + |
| Heath HW-100 tuning knob, loose (HN) | VE3EPY | 68 | Jun 71 | |
| Heath HW-100, HW-101, grid-current monitor for | K4MFR | 46 | Feb 73 | + |
| Heath HW-100, the new | W1NLB | 64 | Sep 68 | |
| Heath HW-101 sidetone control (HN) | AD9M | 79 | Jul 79 | + |
| Heath HW-101, using with a separate receiver (HN) | WA1MKP | 63 | Oct 73 | + |
| Heath HW-12 on MARS (HN) | K8AUH | 63 | Sep 71 | |
| Heath HW-16 keying (HN) | W7DI | 57 | Dec 73 | + |
| Heath HW-16, low-impedance headphones for (HN) | WN8WJR | 88 | Jul 77 | + |
| Heath HW-16, vfo operations for | WB6MZN | 54 | Mar 73 | + |
| Heath HW-16, vfo operations for | Short circuit | 58 | Dec 73 | + |
| Heath HW-17 modifications (HN) | WA5PWX | 66 | Mar 71 | |
| Heath HW-17A, perking up (HN) | HN | 70 | Aug 70 | |
| Heath HW-202 lamp replacement (HN) | W5UNF | 83 | Sep 76 | + |
| Heath HW-202, adding private-line | WA8AWJ | 53 | Jun 74 | + |
| Heath HW-202, another look at the fm channel scanner for | K7PYS | 68 | Mar 76 | + |
| Heath HW-2036 antenna socket (HN) | W3HCE | 80 | Jan 79 | + |
| Heath HW-2036, carrier-operated relay for | WD5HYO | 58 | Feb 80 | + |
| Heath HW-2036, Lever action switch illumination (HN) | W2IFR | 99 | Jul 78 | + |
| Heath HW-2036, outboard LED frequency display | WB8TJL | 50 | Jul 78 | + |
| Heath HW-2036, updating to the HW-2036A | WB6TMH, WA6ODR | 62 | Mar 79 | + |
| Heath HW-7 mods, keying and receiver blanking (HN) | WA5KPG | 60 | Dec 74 | + |
| Heath HW-8, improved keying for (HN) | W3HVK | 60 | Aug 82 | + |
| Heath HWA-2036-3 crowbar circuit (HN) | W3HCE | 88 | Nov 78 | + |
| Heath HX-1681 | W2UWO | 83 | Sep 83 | + |
| Heath IM-11 vtvm, convert to IC voltmeter | K6VCI | 42 | Dec 74 | + |
| Heath intrusion alarm (HN) | Rossman | 81 | Jun 77 | + |
| Heath Micoder improvements | W1OLP | 42 | Nov 78 | + |
| Heath Micoder matching (letter) | WB8VUN | 8 | Sep 78 | + |
| Heath Model IO-4530 oscilloscope, modifications | Bailey | 20 | Aug 82 | + |
| Heath SB receivers, RTTY reception with (HN) | K9HVW | 64 | Oct 71 | + |
| Heath SB-100, using an outboard receiver with (HN) | K4GMR | 68 | Feb 70 | |
| Heath SB-102 headphone operation (HN) | K1KXA | 87 | Oct 77 | + |
| Heath SB-102 modifications (HN) | W2CNQ | 58 | Jun 75 | + |
| Heath SB-102 modifications (HN) | W2CNQ | 78 | Mar 77 | + |
| Heath SB-102 modifications (HN) | W2CNQ | 79 | Mar 77 | + |
| Heath SB-102 modifications (letter) | W1JE | 110 | Mar 78 | + |
| Heath SB-102, receiver incremental tuning for (HN) | K1KXA | 81 | Aug 76 | + |
| Heath SB-102, rf speech processor for | W6IVI | 38 | Jun 75 | + |
| Heath SB-102, WWV on (HN) | K1KXA | 78 | Jan 77 | + |
| Heath SB-200 amplifier modifying for the 8873 zero-bias triode | W6UOV | 32 | Jan 71 | + |
| Heath SB-200 amplifier, six-meter conversion | K1RAK | 38 | Nov 71 | + |
| Heath SB-200 CW modification | K6YB | 99 | Nov 77 | + |
| Heath SB-300, RTTY with | W2ARZ | 76 | Jul 68 | |
| Heath SB-303, 10-MHz coverage for (HN) | W1JE | 61 | Feb 74 | + |
| Heath SB-400 and SB-401, improving alc response in (HN) | WA9FDQ | 71 | Jan 70 | + |
| Heath SB-610 as RTTY monitor scope (HN) | K9HVW | 70 | Sep 74 | + |
| Heath SB-650 using with other receivers | K2BYM | 40 | Jun 73 | + |
| Heath SB-series crystal control and narrow shift RTTY with (HN) | WA4VYL | 54 | Jun 73 | + |
| Heath SE-400/SB-401, simple speech amplifier for (HN) | W8LMH | 72 | Jun 81 | + |
| Heath ten-minute timer | K6KA | 75 | Dec 71 | + |
| Heath's new all-band transceiver, the SS-MW | W9JUV | 12 | Nov 82 | + |
| Heathkit HW-202, fm channel scanner for | W7BZ | 41 | Feb 75 | + |
| Heathkit HW-2036, updating the | WA4BZP | 50 | Nov 80 | + |
| Heathkit HW-8, increased break-in delay (HN) | K6YB | 84 | Jun 79 | + |
| Heathkit Micoder adapted to low-impedance input (HN) | WB2GXF | 78 | Aug 79 | + |
| Heathkit SB-104A, Improved receiver performance for | N2EO | 78 | Apr 81 | + |
| Heathkit SB-series equipment, heterodyne crystal switching (HN) | K1KXA | 78 | Mar 77 | + |
| Heathkit Sixer, spot switch (HN) | WA6FNR | 84 | Dec 69 | + |
| Heathkit, noise limiter for (HN) | W7CKH | 67 | Mar 71 | |
| Henry 2K4 and 3KA linears, electronic bias switching | W1CBY | 75 | Aug 78 | + |
| HP-35 calculator, keyboard cleaning (HN) | Anderson, Leonard H. | 40 | Jul 78 | + |
| Hy-Gain 400 rotator, improved indicator system for | W4PSJ | 60 | May 78 | + |
| IC2AT, carrying case for (HN) | W6XM | 62 | Aug 83 | + |
| ICOM 701 owners' report | WB1CHQ | 56 | Oct 81 | + |
| ICOM IC-22S, using below 146 MHz (HN) | W1IBI | 92 | Apr 79 | + |
| ICOM IC-230, adding splinter channels (HN) | WA1OJX | 82 | Sep 76 | + |
| ICOM IC-2A(T), odd splits | N7AAD | 65 | Jul 82 | + |
| ICOM's newest transceiver | N1ACH | 17 | Mar 88 | + |
| ICOM-22A wiring change (HN) | K1KXA | 73 | Feb 77 | + |
| ICs, drilling template for (HN) | WA4WDL, WB4LJM | 78 | Mar 77 | + |
| Improved gain distribution for the Yaesu FT-726R | K1ZJH | 53 | Jul 87 | + |
| Improving the audio on the ICOM IC-27 | KD8KZ | 29 | Jan 86 | + |
| James Research oscillator/monitor | W1DTY | 91 | Mar 68 | |
| James Research permaflex key | W1DTY | 73 | Dec 68 | |
| Johnson Matchbox, improved | K4IHV | 45 | Jul 79 | + |
| Johnson Matchbox, improved | Short circuit | 92 | Sep 79 | + |
| Kenwood TR-7400A, scanner for (the Kenscan 74) | WB7QYB | 50 | Jan 81 | + |
| Kenwood TR7500, preprogrammed (HN) | W9KNI | 95 | Oct 78 | + |
| Kenwood TS-520 CW filter modification(HN) | W7ZZ | 21 | Nov 75 | + |
| Kenwood TS-520, TVI cure for (HN) | W3FUN | 78 | Jan 77 | + |
| Kenwood TS-520-SE transceiver, counter mixer for | W5NPD | 60 | Sep 80 | + |
| Kenwood TS-530S, more RIT/XIT for the (HN) | WB4EHS | 58 | Apr 90 | + |
| KLM antenna rotor, computer control for (HN) | W8MQW | 66 | Feb 81 | + |
| Knight-kit inverter/charger review | W1DTY | 64 | Apr 69 | |
| Knight-kit two-meter transceiver | W1DTY | 62 | Jun 70 | + |
| Kudos for Kantronics | Comments: WB3EXR | 6 | Jun 87 | + |
| KWM2, RIT for the (HN) | KH6JF | 109 | Jul 84 | + |
| Measurements Corporation 59 grid-dip oscillator improvements | W6GXN | 82 | Nov 78 | + |
| Micro Mart RM terminal modification (HN) | WA5VQK | 99 | Jun 78 | + |
| Mini-mitter II | W6SLO | 72 | Dec 71 | + |
| Mini-mitter II modifications (HN) | K1ETU | 64 | Apr 76 | + |
| Modifying the Trio-Kenwood TS930S | WB9BXT | 67 | Apr 86 | + |
| Modifying the Yaesu FT-301 for 30-meter coverage | AF9Q | 42 | Mar 86 | + |
| More fixes for the IC22S VHF radio | VE6ZS | 91 | Oct 88 | + |
| More optional notes on the TS-930S | W6FR | 23 | Apr 88 | + |
| Motorola channel elements | WB4NEX | 32 | Dec 72 | + |
| Motorola Dispatcher, converting to 12 volts | WB6HXU | 26 | Jul 72 | |
| Motorola Dispatcher, converting to 12 volts | Short circuit | 64 | Mar 74 | + |
| Motorola fm receiver mods (HN) | VE4RE | 60 | Aug 71 | + |
| Motorola P-33 series, improving | WB2AEB | 34 | Feb 71 | + |
| Motorola receivers, op-amp relay for | W6GDO | 16 | Jul 73 | + |
| Motorola voice commander, improving | W0DKU | 70 | Oct 70 | |
| Motrac Receivers (letter) | K5ZBA | 69 | Jul 71 | |
| National NCL-2000, using the Drake T-4XC (HN) | K5ER | 94 | Jan 78 | + |
| Ni-cad battery charging (letter) | W6NRM | 6 | Jul 80 | + |
| Owners survey: 2-meter handhelds | KA1ZM | 35 | Jul 82 | + |
| Owners' survey, TR7 | WB1CHQ | 66 | Nov 81 | + |
| Practically speaking: now that the warranty has expired | K4IPV | 67 | Sep 85 | + |
| Practically speaking: now that the warranty has expired | Comments, W5QJM | 8 | Nov 85 | + |
| Quement circular slide rule | W2DXH | 62 | Apr 68 | |
| R-1000 mod (HN) | W6XM | 60 | Aug 82 | + |
| R-392 receiver mods (HN) | KH6FOX | 65 | Apr 76 | + |
| RDF, An improved | K0OV | 67 | Jul 87 | + |
| Regency HA transceivers, signal-peaking indicator and generator for (HN) | W8HVG | 68 | Jun 76 | + |
| Regency HR-2, narrowbanding | WA8TMP | 44 | Dec 73 | + |
| Regency HR-212, channel scanner for | WA0SJK | 28 | Mar 75 | + |
| S-line, QSK noise (HN) | N1FB | 66 | Mar 82 | + |
| SB-220 transceiver, inrush current protection for - Weekender | W3GYM | 66 | Dec 80 | + |
| SB-303 receiver, noise reduction (HN) | Suzuki | 70 | Jun 82 | + |
| SB301/401, Improved sidetone operation | W1WLZ | 73 | Oct 69 | + |
| SBE linear amplifier tips (HN) | WA6DCW | 71 | Mar 69 | |
| Signal One review | W1NLB | 56 | May 69 | + |
| Simple IC-735 to C-64 interface | N7ICW | 39 | Mar 87 | + |
| Simple modifications and adjustments for the TS-930S | W6FR | 19 | Apr 87 | + |
| Sony ICF-2001, eight-channel memory scanner for | W3CSW | 54 | Aug 82 | + |
| Spurious causes (HN) | K6KA | 66 | Jan 74 | + |
| Standard 826M, more power from (HN) | WB6KVF | 68 | Apr 75 | + |
| Swan 120, converting to two meters | K6RIL | 8 | May 68 | |
| Swan 160X birdie suppression (HN) | W6SAI | 36 | Oct 78 | + |
| Swan 250 Carrier suppression (HN) | WB8LGA | 79 | Oct 76 | + |
| Swan 250, update your (HN) | K8ZHZ | 84 | Dec 69 | + |
| Swan 350 and 400, RTTY operation (HN) | WB2MIC | 67 | Aug 69 | + |
| Swan 350 CW monitor (HN) | K1KXA | 63 | Jun 72 | + |
| Swan 350 CW monitor (HN) | Correction: letter | 77 | May 73 | + |
| Swan 350, curing frequency drift | WA6IPH | 42 | Aug 79 | + |
| Swan 350, receiver incremental tuning (HN) | K1KXA | 64 | Jul 71 | |
| Swan television interference: an effective remedy | W2OUX | 46 | Apr 71 | |
| T150A frequency stability (HN) | WB2MCP | 70 | Apr 69 | |
| Technology of commercial television part 2: hardware | KL7AJ | 54 | Jan 88 | + |
| Telefax transceiver conversion | K0QMR | 16 | Apr 74 | + |
| Ten-Tec Argonaut, accessory package for | W7BBX | 26 | Apr 74 | + |
| Ten-Tec Corsair modification (HN) | N3BEK | 62 | Apr 84 | + |
| Ten-Tec Horizon/2 audio modification (HN) | WB9RKN | 79 | Oct 79 | + |
| Ten-Tec KR-20 keyer, stabilization of (HN) | W3CRG | 69 | Jul 76 | + |
| Ten-Tec Omni-D, improved CW agc for (HN) | W6OA | 88 | Jan 80 | + |
| Ten-Tec RX10 communicators receiver | W1NLB | 63 | Jun 71 | |
| Thumbwheel frequency selector for the Yaesu FT-757GX | KA9SNF | 33 | Nov 87 | + |
| TR-2500/2600 2-channel programming (HN) | K9MLD | 128 | Oct 85 | + |
| Triton IV, 30-meter operation (HN) | AA4LL | 68 | Jun 83 | + |
| TS-430S IF filter mod (HN) | KB0CY | 125 | May 84 | + |
| TS-820 filter switching modification (HN) | K7OAK | 72 | Jun 80 | + |
| TS-820/TS-820S, reducing interference in (HN) | W4MB | 88 | Jan 80 | + |
| TS-930S headset audio, increased undistorted (HN) | W6FR | 128 | Oct 85 | + |
| Updating the Viking MB-VA antenna tuner (HN) | VE7GWO | 43 | Mar 90 | + |
| Using an RTTY terminal unit with the Heathkit HD4040 TNC | AA8V | 59 | Aug 86 | + |
| Wilson Mark II and IV, modifications to (HN) | W9EPT | 89 | Jan 80 | + |
| Yaesu FT-227R memorizer, improved memory (HN) | WA2DHF | 79 | Aug 79 | + |
| Yaesu FT101 clarifier (letter) | K1NUN | 55 | Nov 75 | + |
| Yaesu sideband switching (HN) | W2MUU | 56 | Dec 73 | + |
| Yaesu spurious signals (HN) | K6KA | 69 | Dec 71 | + |
| Yaesu spurious signals (HN) | Units affected (letter) | 67 | Oct 73 | + |