Topics: electronics, digital, free, power, cable, mac, electronic, frequency, power supply, free catalog,...
73 Magazine January 1981 (#244) Emergency Tone Alert System ...... WB5UVC, WB5ASA, WB5PRD 42 WWV-to-80 Meter Converter ...... N7BH 48 Cheap and Simple - your basic 13.8-V, 25-A power supply ...... WA9VLK 50 Direct Printing FAX - part III; testing and operation ...... WB8DQT 54 Unplug It, Dummy! - safety for the traveling ham ...... WB9SKX 58 Power Plus for the Omni - Improving on Ten-Tec's power supply ...... WA4IQQ 60 Oddball Offsets for the KDK-2015R - make a good rig better ...... WB6MYF The...
Topics: mhz, power, antenna, frequency, amateur, radio, magazine, circuit, output, power supply, amateur...
73 Magazine December 1974 (#171) Making Nicads Behave ...... K2OAW 24 Zillions of Parts For Nothing ...... WB9MQY 36 C31 or Bust! ...... DK8SQ 39 Wind Indicator For Your Shack ...... W5ZG 41 Modified Weather Satellite ...... WB8DQT 48 A Logical Keyer? ...... K2QKO 53 The Perils of Novicehood ...... WA1SNG 58 Can FM Simplex Be Solved? ...... WA6CPP 65 Meters And Their Faces ...... W5IUR 70 Slow Scan Tape Secrets ...... K2ULR 73 Simple Probe Logic Check ...... WA3SWS 76 Public Service Band...
Topics: amateur, mhz, jan, voltage, meter, antenna, radio, sstv, oct, battery, amateur radio, wind...
73 Magazine June 1966 (#69) The Micro-Ultimatic - 73 scoop: integrated circuits in a high-performance keyer ...... W1CFW 6 A Transistorized Scope - Another ham scoop: use transistors for deflection amplifiers ...... K8ERV 14 50 Watts on 50 MHz for $50 - This project should prove popular ...... K1CLL 18 Two Meter Transistor Converter - Cheap, simple and works well ...... W6AJF 24 220 MHz Transistor Converter - Grounded emitter or grounded base, too ...... W6AJF 30 432 MHz Transistor Converter -...
Topics: tlie, meter, receiver, frequency, power, antenna, output, crystal, volts, volt, power supply,...
73 Magazine December 1969 (#111) Quick, Easy, Dependable Transistor Diode Checker - For those who like checkered diodes ...... W6ICC 6 Did Samuel Morse Really Invent the Telegraph? - Telegraph? What's that? ...... W2FEZ 10 Combination Dummy Load/Attenuator Network - Also doubles as a hot plate for your coffee warming ...... W2EEY 14 Tuned Filter Chokes - The Easy Way - Can your filter chokes carry a tune? ...... W2OLU 18 Hey OM - You've Got Carrier There - "Drop dead, you...
Topics: circuit, frequency, amateur, output, crystal, power, meter, input, oscillator, mhz, amateur radio,...
Topics: circuit, mhz, electronics, output, free, frequency, digital, data, ibm, optical, power supply, stun...
Topics: pin, voltage, circuit, output, free, electronics, transistor, kit, mhz, digital, power supply,...
73 Magazine March 1970 (#114) Extra Services From Your Grid Dip Oscillator - Like checking crystals, tuning FM receivers and such ...... WA4UZM 18 Reverse-Current Charging - Turns out you really can recharge flashlight batteries! ...... K8YUC 20 A Poor Man's Frequency Meter - Combines surplus from two services ...... W6YAN 24 Professional PCs From Roll-Your-Own Negs - Eliminates drafting, camera work, and darkroom entirely ...... K6MVH 29 How I Read The R.O.'s Handbook & Found Happiness -...
Topics: frequency, output, power, mhz, signal, input, circuit, receiver, meter, crystal, tek tek, grid dip,...
Topics: electronics, computer, output, free, pin, install, input, model, mhz, digital, power supply, radio...
73 Magazine July 1978 (#214) Enjoy All Five Bands - with this novice no-trap antenna ...... W8FX/4 32 Reincarnating Old Test Equipment - a 1942 capacitance meter is born again ...... W3BM 40 Finding Radio Pests - basics ...... WA1UUK 42 Video Magic For Your Home - to make boredom disappear ...... K4TWJ 44 Novice Guide To Phased Antennas - part II ...... W8HXR 48 Can A $20 FM Rig Work! - testing the VHF Engineering TX150 2m xmtr ...... WB4LJM, WA4WDL 52 Hiss Exterminator - an ear-saver for the...
Topics: amateur, frequency, repeater, mhz, antenna, output, meter, radio, input, power, amateur radio,...
Topics: free, pin, output, electronics, voltage, circuit, cable, issues desired, card circle, test...
73 Magazine January 1989 (#340) Hacker's Shack - Where hardware fantasy and reality meet ...... N4RVE 44 Trouble-shooting Guide For Switching Power Supplies - Chart to help minimize trouble-shooting time ...... W9NGP 50 More Microwave Test Equipment For 10 GHz - Several more uses for the versatile detector mount ...... WB6IGP 12 Super Simple Attenuator - Very cheap -and variable! ...... K3OF 14 The 220 MHz All-Mode Transverter - Hard-core home-brewer's delight ...... W6YUY 18 Cheap and Dirty...
Topics: radio, amateur, mhz, antenna, frequency, meter, power, amateur radio, feedback card, power supply,...
Topics: electronics, output, free, mhz, power, kit, electronic, frequency, test equipment, power supply,...
Topics: electronics, digital, voltage, frequency, circuit, free, computer, power, mhz, apple, power supply,...
73 Magazine January 1975 (#172) Using The W. U. Desk Fax ...... K7QXL 25 How to Find the Satellite ...... WB8DQT 31 RTTY Secrets ...... W3JJU 42 The 432 Receiver ...... K1CLL 46 The AN/GR R-5 Receiver ...... W6JTT 64 TTL a s a Decoder Mode ...... W9CGI 57 Simplifying Satellite DXing ...... WB5ASA 77 Blow a Bundle on TTLs ...... K2OAW 81 The R-511, A Real Surplus Bargain ...... W6JTT 86 How Not to be a Loser ...... W9KXJ 91 The Versatile Transistor Checker ...... W5WGF 94 SSTV Video Analysis...
Topics: mhz, output, power, khz, frequency, antenna, dip, input, watts, repeater, power supply, amateur...
Topics: output, signal, circuit, pulse, electronics, mhz, free, input, pin, digital, power supply, toll...
73 Magazine June 1968 (#93) Transformer Tricks - 15 uses for odd transformers ...... W4LLR 6 The ARC-5 Transmitter/Receiver - A new slant on an old favorite ...... WB6BIH 10 Modifying the BC1206 - Using a Japanese transistor Radio ...... W6GXN 14 APS-13 ATV Transmitter - Tail-end Charlie rides again ...... W6ORG 16 Varsatile Variable Power Supply - A simple bench supply ...... W6SLP 18 Low-Cost Conversion of Surplus Oscilloscopes - Using the IP/69/ALA-2 ...... W8JZI 22 Crystalize that FM Rig -...
Topics: output, circuit, frequency, meter, amplifier, oscillator, power, antenna, receiver, crystal, power...
Topics: circuit, output, electronics, voltage, digital, free, input, mhz, color, ohms, hard disk, power...
Topics: output, circuit, pin, electronics, digital, voltage, mhz, frequency, cmos, signal, power supply,...
Topics: pin, electronics, kit, digital, mhz, electronic, frequency, install, free, circuit, power supply,...
73 Magazine March 1969 (#102) Modifying the TCS Transmitter - A useful piece of surplus gear ...... K3UUL 6 A $4 Compressor Pre-Amplifier - More speech for less money ...... W2EEY 10 Reactance or Impedance - Answers to a lot of old questions ...... K9ZPZ, K9DRB 14 Weather Snooper - Eavesdropping on the aircraft WX frequencies ...... K6ZFV 18 The Charmin' Keyer - The solid-state keyer ...... W9HXM 22 Amateur Radio Knows No Borders - Saving a life across the Iron Curtain ...... Staff 32 A Better...
Topics: circuit, output, input, amateur, khz, amplifier, frequency, antenna, signal, power, power supply,...
Topics: electronics, pin, mhz, kit, free, model, electronic, digital, frequency, power supply, stringy...
73 Magazine April 1962 (#19) Six Meter SSB Exciter/Transmitter - Since sideband is going to be the big thing on 6, you'd better start soldering ...... W5JSN/K8NIC 6 Field Strength Meter for Ten and Six - Using a midget loaded whip to improve the sensitivity of your F.S.M ...... W3YZC 9 Forty Meter ZL Special - As the sunspots go, so go the higher bands. Try this 40M amplifier ...... W4AXE 10 73 Tests the Poly-Comm 62B - Pollytronics has really done it: Six and two in one li'l package .........
Topics: antenna, meter, voltage, frequency, receiver, amateur, circuit, coil, output, signal, power supply,...
73 Magazine March 1981 (#246) The ZL/DF Special - your next T-hunt could be a hare-raising experience ...... AD6Z 40 A 49-MHz Repeater? - fun project ...... KL7GLK 44 TR-7400 Behind Bars - something new in S-meters ...... WB3ATP 46 The Last PL Generator - this synthesized unit is the last one you'll ever need ...... WB2BWJ 50 An End to Repeater Time-Outs - with the IC-211 ...... VP2EZ 53 The History of Ham Radio - part XII ...... W9CI 54 Half a Loaf - charger for 6-volt batteries .........
Topics: mhz, amateur, radio, antenna, frequency, magazine, kit, ham, output, amateur radio, power supply,...
73 Magazine November 1969 (#110) An Approach to Six-Meter SSB - Using an NCX-3 or other SSB transceiver ...... WA1FRJ 6 IF Notch Filter - For the last word in selectivity for your transceiver ...... W2EEY 14 Calibrate That Homebrew Dial - Accurate calibrations on any band ...... K9STH 18 Slow Scan Color Pictures - Using additive synthesis ...... WA2EMC 20 A Remote VFO for the HW32A - Split frequency operation simplified ...... AP2MR 22 Cheap and Simple for Six - Three transistor PC board...
Topics: frequency, antenna, circuit, signal, ssb, mhz, amateur, radio, output, power, power supply, amateur...
73 Magazine May 1996 (#428) Build the Bioelectrifier - Heal yourself and take a poke at the medical establishment the same time! ...... WA8YKN 10 Belcher Islands DXpedition - Take off to the Great White North ...... VE3WFS 20 A 220 Super J-Pole Antenna - 220 -Use it or loose it. Here's a simple, inexpensive one-hour building project ...... KA0NAN 26 The Difference Is Dedication - Ham radio Saves four communities ...... K7OOZ 30 Tape-Wound Antennas - Neat, efficient, and easy to build .........
Topics: antenna, radio, amateur, mhz, frequency, power, hams, ham, meter, amateur radio, radio today,...
73 Magazine May 1967 (#80) The Quad-Quad-Quad - Sixteen quads on a single mast for 144 and 432 ...... VE3DNR 6 The Expanded Quad - More gain and directivity on 10, 15 and 20 ...... WA5KXY 16 An Inexpensive DX Antenna - A low-cost, two-element quad for DXer's ......WA6WUI 20 The Miniquad - A practical small size quad for twenty meters ...... WA2APT 23 A Full-Size 7 MHz Rotary Cubical Quad - For hams with big backyards ...... K6DDO 26 Experiments with Quad Antennas - Optimum designs for HF and...
Topics: quad, antenna, meter, tube, boom, element, frequency, mhz, ham, tubes, power supply, element quad,...
Topics: voltage, output, electronics, frequency, circuit, signal, free, digital, mhz, pin, power supply,...
Topics: circuit, signal, output, frequency, power, electronics, ibm, voltage, pin, free, power supply, toll...
Topics: voltage, kit, electronics, pin, free, frequency, mhz, power, signal, output, power supply, dual...
73 Magazine November 1968 (#98) Computer Card Transmitter - Plug in components ...... K1EUJ 6 Crystal Filters - The heart of SSB ...... W3RET 12 Trouble Shooting Solid-State - Modern day problems solved ...... K3PBY 16 IC Frequency Counter - Easy to build counter for ham applications ...... WB6IBS 20 C.V. Transformers for Ham Applications - Keeping the voltage constant in the shack ...... WA9CQN 28 A Space Communications Odyssey - It isn't going to be easy to keep in touch! ...... K6BW 32...
Topics: transistor, circuit, voltage, antenna, radio, output, frequency, input, wire, amateur, power...
Topics: circuit, electronics, output, pin, input, digital, free, mhz, electronic, toll free, power supply,...
Topics: electronics, cable, free, sale, digital, mhz, stereo, fmx, signal, power supply, test equipment,...
Topics: output, electronics, voltage, digital, power, signal, free, circuit, mhz, display, power supply,...
Topics: circuit, output, voltage, frequency, signal, mhz, electronics, color, free, pin, power supply, toll...
73 Magazine January 1965 (#52) 120 Watts Mobile on Two - With a well-modulated 5894 ...... K5JKX 6 AM, the Ham and Transistors - It's not too easy to get linear modulation with transistors ...... Geisler 12 Diode Controlled Break-In - A very clever scheme for easy clean switching ...... VE2AUB/W5 16 Calibration and How to Get It - By one of the greatest hams ...... K6BJ 22 Tuned Feeders Forever - Nasty black snake ...... W5DWT 24 Pegboard Panacea - Clean up your messy workshop ...... K6UGT 27...
Topics: meter, receiver, antenna, power, transistor, voltage, circuit, output, model, grid, power supply,...
73 Magazine February 1964 (#41) Two Meter SSB Rig - employing novel features ......WA2IKL 6 Heath Warrior Tip ...... W2DOR 12 Simplified Receiver Design - become an instant expert ...... WA2INM 14 Making an AC Capacitor ...... K5JKX 23 Heat Dissipating Tube Shields ...... K2ENN 24 More on the Magic TR Switch ...... K5JKX 23 Miniture AM Tuner - transistorized broadcast tuner ...... K6AI 30 Loud Speakers and Enclosures - for phone ...... W1JKX 28 Transistor CW Transmitter - 2 Watt, 7 MHz .........
Topics: amateur, frequency, receiver, antenna, transmitter, circuit, power, radio, meter, arrl, amateur...
Topics: digital, circuit, free, mhz, voltage, electronics, display, catalog, frequency, free catalog,...
Topics: circuit, voltage, electronics, output, free, digital, led, cable, frequency, audio, power supply,...
Topics: free, electronics, digital, sync, signal, electronic, video, catalog, beckman industrial, power...
2,742
2.7K
Jul 26, 2010
07/10
by
NON
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Programming languages, computer graphics, neural networks, massively parallel computers, SIMD architecture, algorithms, digital terrain models, sort computation, simulation of charged particle transport on the massively parallel processor and image processing are among the topics discussed.
Topics: FLAMMABILITY, HOLDERS, IGNITION, PROPELLANTS, TEST EQUIPMENT, OSCILLOGRAPHS, PRESSURE MEASUREMENT,...
Topic: The Sensor Handbook is intended as a guide for those who design, specify, use, and test military...
2,344
2.3K
Mar 25, 2011
03/11
by
Charles Sicuranza 1938
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Text on Oscilloscope use
Topics: Vacuum Tubes, Oscilloscope, Test Equipment
1,843
1.8K
Mar 9, 2019
03/19
by
NYbill
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Summary: NYbill reviews, yet another, inexpensive multimeter. Source: http://hackerpublicradio.org/eps.php?id=2769 Original audio: http://archive.org/download/hpr2769/hpr2769_source.flac NYbill does yet another inexpensive multimeter review. This time the AstroAI WH5000A. (Its time for a multimeter intervention!) The meter: https://www.astroai.com/portfolio-items/astroai-digital-multimeter-trms-6000-counts-multimeters/ Pics for the episode:...
Topics: multimeter, electronics, test equipment, hardware review
1,834
1.8K
Jul 9, 2010
07/10
by
SHEFTER, Y. I
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THE BASIC PROBLEMS CONNECTED WITH THE SELECTION OF LAYOUTS AND CALCULATION OF PARAMETERS OF WIND MACHINES, THEIR ENERGY-PRODUCING CHARACTERISTICS AND TECHNICAL AND ECONOMIC INDICES ARE PRESENTED. METHODS OF OPTIMAL MATCHING OF WIND ENGINES WITH WORKING MACHINES, CALCULATORS FOR STRENGTH, AND CONSTRUCTION AND AUTOMATION OF WIND MACHINES ARE ANALYZED IN DETAIL. A DESCRIPTION IS GIVEN OF THE SETUP OF DOMESTIC AND FOREIGN WIND INSTALLATIONS FOR VARIOUS PURPOSES. BASIC CHARACTERISTICS OF WIND AS A...
Topics: EARTH SURFACE, RESEARCH PROJECTS, TEST EQUIPMENT, MISSION PLANNING, SATELLITE OBSERVATION, SPACE...
1,759
1.8K
Jul 26, 2010
07/10
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NON
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No Abstract Available
Topics: CONTROL SYSTEMS DESIGN, COMPUTER PROGRAMS, MAN MACHINE SYSTEMS, MANUAL CONTROL, REAL TIME...
Topics: voltage, cable, circuit, pole, battery, equipment, maintenance, test, insulation, electrical,...
1,352
1.4K
Jul 21, 2010
07/10
by
NON
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Engine testing, ceramic component fabrication and evaluation, component performance rig testing, and analytical studies comprised AGT 100 activities during the 1985 year. Ten experimental assemblies (builds) were evaluated using two engines. Accrued operating time was 120 hr of burning and 170 hr total, bringing cumulative total operating time to 395 hr, all devoid of major failures. Tests identified the generator seals as the primary working fluid leakage sources. Power transfer clutch...
Topics: ENGINE TESTS, INLET NOZZLES, PROP-FAN TECHNOLOGY, CODING, COMPUTER PROGRAMS, COST EFFECTIVENESS,...
1,273
1.3K
Jun 9, 2013
06/13
by
Leader Electronics Corp,
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Service manual for the Leader LBO-502 15MHz analog oscilloscope.
Topics: service manual, oscilloscope, test equipment, leader, lbo-502
Various computer and engineering books - Howard W. Sams & Co. Inc.
Topics: radio, electronics, electronic, circuits, handbook, servicing, chapter, transistor, photofact,...
