An Index for Ham Radio Magazine

A Searchable Index of the old "Ham Radio" Magazine

"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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Results by Category: 9 — fm and repeaters

Article Author Page Issue Available to Buy?
Amateur vhf fm operationW6AYZ36Jun 68 
Audio-amplifier and squelch unitW6AJF36Aug 68 
Narrow-band fm system. using ICs inW6AJF30Oct 68 
Identifier, programmable repeaterW6AYZ18Apr 69 
Repeater, receiving system degradationK5ZBA36May 69 
Tone encoder and secondary frequency oscillator (HN)K8AUH66Jun 69 
Receiver, modular fm communicationsK8AUH32Jun 69 
Identifier, programmable repeaterShort circuit76Jul 69 
Encoder, combined digital and burstK8AUH48Aug 69 
Distortion in fm systemsW5JJ26Aug 69 
Fm techniques and practices for vhf amateursW6SAI8Sep 69 
Repeater transmitter, improvingW6GDO24Oct 69 
Receiver, modular fm communicationsCorrection71Jan 70 
Transmitter for two meters, phase-modulatedW6AJF18Feb 70 
Modulation standards for vhf fmW6TEE16Jun 70 
Fm techniques and practices for vhf amateursShort circuit79Jun 70 
Receiver for two meter, fmW9SEK22Sep 70 
Motorola voice commander, improvingW0DKU70Oct 70 
Continuous tuning for fm converters (HN)W1DHZ54Dec 70 
Receiver isolation, fm repeater (HN)W1DTY54Dec 70 
Deviation meter (HN)VE7ABK58Dec 70 
Frequency meter, two-meter fmW4JAZ40Jan 71 
Motorola P-33 series, improving theWB2AEB34Feb 71 
Repeater problemsVE7ABK38Mar 71 
Fm receiver frequency control (letter)W3AFN65Apr 71 
Control head, customizingVE7ABK28Apr 71 
Frequency meter, two-meter fmShort circuit72Apr 71 
Receiver for two meter, fmShort circuit72Apr 71 
Collinear array for two meters, 4-elementW86KGF6May 71 
Antenna, two-meter fm (HN)WB6KYE64May 71 
Deviation measurement (letter)K5ZBA68May 71 
Channels, three from two (HN)VE7ABK68Jun 71 
Carrier-operated relay and call monitorVE4RE22Jun 71 
Sequential switching for Touch-Tone repeater controlW8GRG22Jun 71 
Motrac receivers (letter)K5ZBA69Jul 71 
Fm transmitter, solid-state two-meterW6AJF14Jul 71 
Motorola fm receiver mods (HN)VE4RE60Aug 71 
Channel scannerW2FPP29Aug 71 
Sequential encoder, mobile fmW3JJU34Sep 71 
I-f system, multimodeWA2IKL39Sep 71 
Fm transmitter, Sonobaby, 2 meterWA0UZO8Oct 71 
Receiver, tunable vhf fmK8AUH34Nov 71 
Push-to-talk for Styleline telephonesW1DRP18Dec 71 
Fm transmitter, Sonobaby, 2 meterShort circuit96Dec 71 
Tone-burst keyer for fm repeatersW8GRG36Jan 72 
Deviation measurementsW3FQJ52Feb 72 
Receiver, modular, for two-meter fmWA2GBF42Feb 72 
Preamplifier, two meterWA2GCF25Mar 72 
Filter, 455-kHz for fmWA0JYK22Mar 72 
Transmitter, two-meter fmW9SEK6Apr 72 
Collinear antenna for two meters, nine-elementW6RJO12May 72 
Receiver, modular, for two-meter fmAdded notes73Jul 72 
Receiver performance, comparison ofVE7ABK68Aug 72 
Mobile operation with the Touch-Tone padW0LPQ58Aug 72 
Interference, scanning receiver (HN)K2YAH70Sep 72 
Repeater control with simple timersW2FPP46Sep 72 
Fm transmitter, Sonobaby, 2 meterCrystal deck for Sonobaby26Oct 72 
Fm demodulator, TTLW3FQJ66Nov 72 
Receiver, vhf fmWA2GCF6Nov 72 
Carrier-operated relayK0PHF, WA0UZO58Nov 72 
Repeater control with simple timersCorrection91Dec 72 
Mobile operation with the Touch-Tone padCorrection90Dec 72 
Motorola channel elementsWB4NEX32Dec 72 
Repeater decoder, multi-functionWA6TBC24Jan 73 
Phase-locked loop, tunable, 28 and 50 MHzW1KNI40Jan 73 
Scanner, vhf receiverK2LZG22Feb 73 
Timer, simple (HN)W3CIX58Mar 73 
Touch-tone circuit, mobileK7QWR50Mar 73 
Tone-burst generator (HN)K4COF58Mar 73 
Whip, 5/8-wave, 144 MHz (HN)VE3DDD70Apr 73 
Mobile operation with the Touch-Tone padModification (letter)72Apr 73 
Indicator, sensitive rfWB9DNI38Apr 73 
Power amplifier, rf, 144-MHz fmW4CGC6Apr 73 
Receiver, vhf fm (letter)K8IHO76May 73 
Antennas, simple, for two-meter fmWA3NFW30May 73 
Power supply, regulated ac for mobile fm equipmentWA8TMP28Jun 73 
Repeater installationW2FPP24Jun 73 
Logic oscillator for multi-channel crystal controlW1SNN46Jun 73 
Relay, operational-amplifier, for Motorola receiversW6GDO16Jul 73Issue Available
Frequency synthesizer, for two-meter fmWB4FPK34Jul 73Issue Available
Base station, two-meter fmW9JTQ22Aug 73 
Frequency synthesizer, inexpensive all-channel, for two-meter fmW0OA50Aug 73 
Power amplifier, rf 220-MHz fmK7JUE6Sep 73 
Frequency-synthesizer, one-crystal for two-meter fmW0MV30Sep 73 
Touch-tone decoder, multi-functionK0PHF, WA0UZO14Oct 73 
Antenna and control-link calculations for repeater licensingW7PUG58Nov 73Issue Available
Repeaters, single-frequency fmW2FPP40Nov 73Issue Available
Test set for Motorola radiosK0BKD12Nov 73Issue Available
Power amplifier, rf, 144 MHzHatchett6Dec 73 
Test set for Motorola radiosShort circuit58Dec 73 
Antenna and control-link calculations for repeater licensingShort circuit59Dec 73 
Cavity filter, 144-MHzW1SNN22Dec 73 
Transceiver for two-meter fm, compactW6AOI36Jan 74 
Power amplifier, two-meter fm, 10-wattW1DTY67Jan 74 
Scanning receiver modifications, vhf fmWA5WOU60Feb 74 
Receiver for six and two meters, multichannel fmW1SNN54Feb 74 
Automatically controlled access to open repeatersW8GRG22Mar 74Issue Available
Monitor receivers, two-meter fmWB5EMI34Apr 74Issue Available
Vertical antennas, truth about 5/8-wavelengthK0DOK48May 74Issue Available
Antenna, 5/8 wavelength two-meter, build from CB mobile whips (HN)WB4WSU67Jun 74 
Frequency synthesizer, inexpensive all-channel, for two-meter fmCorrection (letter)65Jun 74 
Private-line, adding to Heath HW-202WA8AWJ53Jun 74 
Test set for Motorola radiosAdded note (letter)64Jun 74 
Preamplifier, two meterW8BBB36Jun 74 
Antenna, 5/8-wavelength, two-meterK6KLO40Jul 74 
Autopatch system for vhf fm repeatersW8GRG32Jul 74 
Scanning receivers for two-meter fmK4IPV28Aug 74 
Squelch-audio amplifier for fm receiversWB4WSU68Sep 74 
Tunable receiver modification for vhf fmWB6VKY40Oct 74Issue Available
Reset timer, automaticW5ZHV54Oct 74Issue Available
S-meter for Clegg 27B (HN)WA2YUD61Nov 74Issue Available
Telephone controller, automatic for your repeaterK0PHF, WA0UZO44Nov 74Issue Available
Scanning receiver, improved for vhf fmWA2GCF26Nov 74Issue Available
Touch-tone decoder, three-digitW6AYZ37Dec 74 
220 MHz frequency synthesizerW6GXN8Dec 74 
Weather monitor receiver, retune to two-meter fm (HN)W3WTO56Jan 75Issue Available
Vertical antennas, truth about 5/8-wavelengthAdded note (letter)54Jan 75Issue Available
Digital touch-tone encoder for vhf fmW7FBB28Apr 75Issue Available
Single-frequency conversion, vhf/uhfW3FQJ62Apr 75Issue Available
Touch-tone handset, converting slim-lineK2YAH23Jun 75Issue Available
Interface problems, fm equipment (HN)W9DPY58Jun 75Issue Available
Tone encoder, universal for vhf fmW6FUB17Jul 75 
Phase modulation principles and techniquesVE2BEN28Jul 75 
450-MHz preamplifier and converterWA2GCF40Jul 75 
Receiver alignment techniques, vhf fmK4IPV14Aug 75Issue Available
Charger, fet-controlled for nicad batteriesWA0UYK46Aug 75Issue Available
Mobile antenna, magnet-mountW1HCI54Sep 75Issue Available
Touch-tone decoder, three-digitCircuit board for62Sep 75Issue Available
Touch-tone hand-heldK7YAM44Sep 75Issue Available
Discriminator, quartz crystalWA0JYK67Oct 75Issue Available
Satellite receivers for repeatersWA4YAK64Oct 75Issue Available
Receiver, vhf fmWA2GCF8Nov 75Issue Available
Tone encoder, universal for vhf fmCorrection58Dec 75Issue Available
Phase modulation principles and techniquesCorrection59Dec 75Issue Available
Squelch circuits for transistor radiosWB4WSU36Dec 75Issue Available
Synthesized two-meter fm transceiverW1CMR, K1IJZ10Jan 76Issue Available
Telephone controller for remote repeater operationK0PHF, WA0UZO50Jan 76Issue Available
144-MHz, 5/8-wavelength vertical antennaW1RHN50Mar 76 
Mobile rig, protecting from theft (C&T)W1DTY42Apr 76Issue Available
144-MHz 5/8-wavelength, vertical antenna for mobileK4LPQ42May 76 
Magnet mount antenna, portable (HN)WB2YYU67May 76 
144-MHz vertical mobile antennas, 1/4 and 5/8 wavelength, test data onW2LTJ, W2CQH46May 76 
Time-out warning indicator for fm repeater usersK3NEZ62Jun 76Issue Available
Detectors, fm, survey ofW6GXN22Jun 76Issue Available
144-MHz digital synthesizers, readout displayWB4TZE47Jul 76 
Repeater linking, carrier-operated relay forK0PHF57Jul 76 
144-MHz fm exciter, high performanceWA2GCF10Aug 76Issue Available
High performance vhf fm transmitterWA2GCF10Aug 76Issue Available
European vhf-fm repeatersSM4GL80Sep 76Issue Available
Synthesized two-meter fm transceiverLetter, W5GQV78Sep 76Issue Available
Squelch circuit, another (HN)WB4WSU78Oct 76Issue Available
Receiver performance of vacuum-tube vhf-fm equipment, how to improveW0GGV52Oct 76Issue Available
Scanner, two-channel, for repeater monitoringW8GRG48Oct 76Issue Available
Single-sideband fm, introduction toW3EJD10Jan 77 
Up/down repeater-mode circuit for two-meter synthesizers, 600 kHzWB4PHO40Jan 77 
Tone generator, ICAhrens70Feb 77 
Decoder, control functionWA9FTH66Mar 77Issue Available
IC-230 modification (HN)W8PEY80Mar 77Issue Available
S-meter, audible, for repeatersZL2AMJ49Mar 77Issue Available
Synthesized channel scanningWA0UZO68Mar 77Issue Available
144-MHz mobile antenna (HN)W2EUQ80Mar 77Issue Available
Telephone controller for remote repeater operationPrecautions (letter)79Apr 77Issue Available
Remote base, an alternative to repeatersWA6LBV, WA6FVC32Apr 77Issue Available
Mobile antennas, vhf, comparison ofW4MNW52May 77Issue Available
Converting low-band mobile antenna to 144 MHz (HN)K7ARR90May 77Issue Available
Up/down repeater-mode circuit for two-meter synthesizers, 600 kHzShort circuit94May 77Issue Available
Frequency synthesizer sidebands, filter reduces (HN)K1PCT80Jun 77 
Touch-tone encoderW3HB41Aug 77 
144-MHz synthesizer, direct outputWB2CPA10Aug 77 
Two-meter synthesizer, direct outputWB2CPA10Aug 77 
Repeater shack temperature, remote checkingZL2AMJ84Sep 77 
Tone-burst generator for repeater accessingWA5KPG68Sep 77 
Private call system for vhf fmWA6TTY62Sep 77 
Repeater kerchunk eliminatorWB6GTM70Oct 77Issue Available
Multimode transceivers, fm-ing on uhf (HN)W6SAI98Nov 77Issue Available
Two-meter synthesizer, direct outputShort circuit68Dec 77 
Repeater channel spacing (letter)WB6JPI90Jan 78Issue Available
144-MHz synthesizer, direct output (letter)WB6JPI90Jan 78Issue Available
Private call system for vhf fm (HN)W9ZTK77Feb 78Issue Available
Digital scanner for 2-meter synthesizersK4GOK56Feb 78Issue Available
Repeater Interference: some corrective actionsW4MB54Apr 78Issue Available
Command function debugging circuitWA7HFY84Jun 78Issue Available
Frequency synthesizers, 600 kHz offset for (HN)K6KLO96Jul 78Issue Available
Subaudible tone encoders and decodersW8GRG26Jul 78Issue Available
Touch-tone decoder, ICW3OG26Jul 78Issue Available
Single-tone decoderWA2UMY70Aug 78 
Simple scope monitor for vhf fmW1RHN66Aug 78 
Fm demodulator using the phase-locked-loopKL7IPS74Sep 78Issue Available
Repeater jammers, tracking downW4MB56Sep 78Issue Available
Preamplifier for handi-talkiesWB2IFV89Oct 78 
Tone-alert decoderW8ZXH64Nov 78Issue Available
Receivers, setup using hf harmonics (HN)K9MM89Nov 78Issue Available
Solar powered repeater designWB5REA/WB5RSN28Dec 78Issue Available
Deviation, measuringN6UE20Jan 79Issue Available
Synthesizer, 144 MHz, 800-channelK4VB, WA4GJT10Jan 79Issue Available
Tone-burst generator for repeater accessingShort circuit94Feb 79Issue Available
Tone generator, IC (HN)W6IPB88Mar 79Issue Available
Folded whip antenna for vhf mobile - WeekenderWB2IFV50Apr 79Issue Available
External frequency programmer (HN)WB9VWM92Apr 79Issue Available
Fm demodulator using the phase-locked-loopComments Anderson, Leonard H.6Apr 79Issue Available
Amateur fm, close look atW2YE46Aug 79 
Antenna design for omnidirectional repeater coverageN9SN20Sep 79Issue Available
Ni-cad charger, any-stateWA6TBC66Dec 79Issue Available
Synthesizer, 144-MHz CMOSK9LHA14Dec 79Issue Available
Touch-tone decoder, third generationWA7DPX36Feb 80Issue Available
Touch-tone decoder, third generationShort circuit67Sep 80Issue Available
Add fm to your receiver (weekender)K3NXU74Mar 81Issue Available
Speech processor for fm transmittersG4CLF, G3RZP76Mar 82Issue Available
IC-255A switching circuit (HN)WB6IQV70Jan 83 
Autopatch, simplexWB6GTM42Jan 83 
Forget memory (Ni-Cd discussion)K0OV62Jan 83 
Tone burst generator for European repeatersComments, K2MWU8Feb 83 
Microprocessor repeater controllerKB5F56Apr 83 
Touch-tone decoderKC9C27Apr 83 
Repeater antenna beam tiltingK7NM29May 83Issue Available
Squelch, smartW6NRW37Jun 83Issue Available
IC-255A switching circuit (HN)Comments, WA4MZZ8Jun 83Issue Available
Repeater antenna beam tiltingShort circuit80Jul 83Issue Available
Linear translatorsWB6JNN14Sep 83Issue Available
Repeater etiquette (letter)W1OLP8Oct 83Issue Available
State-of-the-art auto dialerK2MWU21Dec 83Issue Available
Repeaters, three circuits for (HN)N9EE91Jan 84 
State-of-the-art auto dialerShort circuit10Feb 84Issue Available
Repeaters, speech synthesis forN9EE79Mar 84Issue Available
State-of-the-art auto dialerShort circuit10Mar 84Issue Available
FM advantageWA9GDZ638Sep 84Issue Available
Repeater, high-tech: designing and building an FM translatorWA6CAY82Feb 85 
FM repeater separation : 20 kHz, Yes, 15 kHz, NoWD5IBS12Aug 85Issue Available
DTMF controller for repeatersWB4FXD47Sep 85 
Remote repeater programming using a computer and a telephoneKD9BC89Mar 86Issue Available
Improved repeater/transmitter noise performance (HN)K1ZJH104Apr 86Issue Available
Tone burst generator for European repeatersWA3EEC88Jul 86Issue Available
ZIA connection: a multi-state 2-meter repeater linkK5XY30Oct 86Issue Available
State-of-the-art auto dialerComments, WD9EIA8Feb 88 

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