hr index - measurements and test equipment

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1.5GHz prescaler, divide by 4 N6JH 88 Dec 78 +
2.3GHz prescaler N6JH 21 Jan 87 +
A-m modulation monitor, vhf (HN) K7UNL 67 Jul 71
Absorption measurements, using your signal generator for W2OUX 79 Oct 76 +
Ac current monitor (letter) WB5MAP 61 Mar 75 +
AC power-line monitor W2OLU 46 Aug 71 +
Add a digital readout to the "poor man's spectrum analyzer" WA2PZO 84 Sep 88 +
AFSK generator, crystal-controlled K7BVT 13 Jul 72
AFSK generator, phase-locked loop K7ZOF 27 Mar 73 +
Amateur frequency measurements K6KA 53 Oct 68
An i-f sweep generator W2ZUC 101 Jan 87 +
An rf voltmeter G4COL 65 Nov 87 +
Antenna and transmission line measurement techniques W4OQ 36 May 74 +
Antenna bridge calculations Anderson, Leonard H. 34 May 78 +
Antenna bridge calculations (letter) W5QJR 6 May 78 +
Antenna gain, measuring K6JYO 26 Jul 69 +
Antenna matcher W4SD 24 Jun 71
Automatic noise-figure measurements (Repair Bench) W6NBI 40 Aug 78 +
Base step generator WB4YDZ 44 Jul 76 +
Battery charger sensor W3BYM 54 Dec 82 +
BC221, unusual VK2ZH 22 Jan 83 +
Beta master, the K8ERV 18 Aug 68
Bridge for antenna measurements, simple W2CTK 34 Sep 70 +
Bridge measurements, the half-wave transmission line in (HN) K4KI 108 Nov 84 +
Bridge, noise, for impedance measurements YA1GJM 62 Jan 73 +
Bridge, noise, for impedance measurements Added notes 66 May 74 +
Bridge, noise, for impedance measurements Added notes 60 Mar 75 +
Bridge, rf noise WB2EGZ 18 Dec 70
Broadband reflectometer and power meter VK2ZTB, WB2ZZO 28 May 79 +
Build this simple L-C checker W5FG 19 Dec 88 +
Calibrating ac scales on the vtvm, icvm and fet voltmeter W7KQ 48 Sep 76 +
Calibrating series-resistance capacitance bridges (HN) Caron 27 Dec 88 +
Calibrator, plug-in IC K6KA 22 Mar 69
Calibrators and counters K6KA 41 Nov 68
Capacitance measurements with a frequency counter - Weekender Moran, John 62 Oct 79 +
Capacitance meter Mathieson, P. H. 51 Feb 78 +
Capacitance meter, (simplified), improvements to WA3CPH 54 Mar 80 +
Capacitance meter, digital K4DHC 20 Feb 74 +
Capacitance meter, direct reading, for electrolytics W9DJZ 14 Oct 71 +
Capacitance meter, direct-reading ZL2AUE 46 Apr 70
Capacitance meter, direct-reading W6MUR 48 Aug 72
Capacitance meter, direct-reading Short circuit 64 Mar 74 +
Capacitance meter, direct-reading WA5SNZ 32 Apr 75 +
Capacitance meter, direct-reading Added note 31 Oct 75 +
Capacitance meter, simplified WA5SNZ 78 Nov 78 +
Capacitive-reactance meter multiplier (HN) K4KI 89 Apr 83 +
Coaxial cable, checking (letter) W2OLU 68 May 71 +
Coaxial-line loss, measuring with a reflectometer W2VCI 50 May 72 +
Continuity bleeper for circuit tracing G3SBA 67 Jul 77 +
Continuity tester, simple WD6GMB 130 Sep 85 +
Converter, mosfet, for receiver instrumentation WA9ZMT 62 Jan 71 +
Counter control pulses (HN) W9LL 70 Apr 80 +
Counter gating sources K6KA 48 Nov 70
Counter readouts, switching (HN) K6KA 66 Jun 71
Counter reset generator (HN) W3KBM 68 Jan 73 +
Counter, compact frequency K4EEU 16 Jul 70
Counter, compact frequency Short circuit 72 Dec 70
Counters: a solution to the readout problem WA0GOZ 66 Jan 70 +
CRT intensifier for RTTY K4VFA 18 Jul 71
Crystal checker W6GXN 46 Feb 72
Crystal test oscillator and signal generator K4EEU 46 Mar 73 +
Crystal-controlled frequency markers (HN) WA4WDK 64 Sep 71
Cubical quad measurements W4YM 42 Jan 69 +
Current monitor mod Letter 61 Mar 75 +
Curve master, the K8ERV 40 Mar 68
Decade standards, economical (HN) W4ATE 66 Jun 71
Deluxe logic probe M. Wilde 74 Jan 87 +
Detailed look at probes Martin, and Davis 75 Sep 85 +
Detector, logarithmic, wideband PA0CX, DJ0SA 75 Jul 85 +
Deviation, measuring N6UE 20 Jan 79 +
Digital capacitance meter K4GOK 66 Aug 80 +
Digital counters (letter) W1GGN 76 May 73 +
Digital field strength meter N4TMI 30 May 90 +
Digital readout station accessory, part I K6KA 6 Feb 72
Digital station accessory, part II K6KA 50 Mar 72
Digital station accessory, part Ill K6KA 36 Apr 72
Diode noise source for receiver noise measurements W6NBI 32 Jun 79 +
Diode tester W6DOB 46 Jan 77 +
Diode tester (HN) W2OLU 90 Apr 83 +
Dip meters, a new look at W6GXN 25 Aug 81 +
Dip-meter converter for VLF W4YOT 26 Aug 79 +
Dipper without plug-in coils W6BLZ 64 May 68
Dual wattmeter, 50-500 MHz WB4EHS 67 Jul 85 +
Dummy load and rf wattmeter, low-power W2OLU 56 Apr 70
Dummy load low-power vhf WB9DNI 40 Sep 73 +
Dummy loads W4MB 40 Mar 76 +
Dummy loads, experimental W8YFB 36 Sep 68
Dynamic transistor tester (HN) VE7ABK 65 Oct 71 +
Electrical calibration standards Martin, Vaughn D. 10 Oct 83 +
Electrolytic capacitors, measurement of (HN) W2NA 70 Feb 71 +
Electrolytic capacitors, measuring capacitance of KP4DIF 24 Sep 80 +
Elmer's notebook: power measurements W1SL 100 Jan 88 +
Elmer's Notebook: Simple Instruments RF Output Monitor W1SL 91 Nov 89 +
Elmer's notebook: standing wave ratio- what does it mean? W1SL 98 Feb 88 +
Elmer's Notebook: Test Equipment-Easy and Useful W1SL 86 Oct 89 +
Elmer's Notebook: Visual Aids- Oscilloscopes W1SL 92 Jun 89 +
EMI/RFI shielding: new techniques part1 Martin, Vaughn D. 72 Jan 84 +
EMI/RFI shielding: new techniques part2 Martin, Vaughn D. 85 Feb 84 +
Extend Your DVM's Measurement Capabilities N6YC 72 Oct 89 +
Extended-range VU meter WB6JNN 59 Sep 86 +
Field strength meter, sensitive K4KI 51 Jan 85 +
Field-strength meter for the high-frequency Amateur bands WB6AFT 42 Jul 81 +
Filter tester, simple (HN) W6XM 116 Dec 84 +
Fm deviation measurement (letter) K5ZBA 68 May 71 +
Fm deviation measurements W3FQJ 52 Feb 72
Fm frequency meter, two-meter W4JAZ 40 Jan 71 +
Fm frequency meter, two-meter Short circuit 72 Apr 71
Frequencies, counted (HN) K6KA 62 Aug 74 +
Frequency and level standard PA0CX 10 Jan 86 +
Frequency and level standard Comments, WA8LLY 9 Jun 86 +
Frequency calibration using 60 kHz WWVB W4ZPS 45 Mar 88 +
Frequency calibrator, general coverage W5UQS 28 Dec 71 +
Frequency calibrator, how to design W3AEX 54 Jul 71
Frequency counter, "smart" WA5VQK 41 Oct 84 +
Frequency counter, "smart" Short circuit 126 Apr 85 +
Frequency counter, 50 MHz, 6 digit WB2DFA 18 Jan 76 +
Frequency counter, 50 MHz, 6 digit Comment 79 Apr 77 +
Frequency counter, capacitance-measurement accuracy for W1ZUC 44 Apr 80 +
Frequency counter, capacitance-measurement accuracy for Short circuit 67 Sep 80 +
Frequency counter, CMOS W2OKO 22 Feb 77 +
Frequency counter, CMOS Short circuit 94 May 77 +
Frequency counter, front-ends for a 500-MHz K4JIU 30 Feb 78 +
Frequency counter, high-impedance preamp and pulse shaper for I4YAF 47 Feb 78 +
Frequency counter, how to improve the accuracy of W1RF 26 Oct 77 +
Frequency counter, K4JIU, modifications for (HN) K4JIU 65 Mar 80 +
Frequency counter, miniature K5WKQ 34 Oct 79 +
Frequency counter, modify for direct counting to 100 MHz WA1SNG 26 Feb 78 +
Frequency counter, simple (HN) W2QBR 81 Aug 78 +
Frequency counter, simplifying W1WP 22 Feb 78 +
Frequency counter, simplifying Short circuit 94 Feb 79 +
Frequency counters, high-sensitivity preamplifier for W1CFI 80 Oct 78 +
Frequency counters, uhf and microwave W6NBI 34 Sep 79 +
Frequency counters, understanding and using W6NBI 10 Feb 78 +
Frequency measurement of received signals W4AAD 38 Oct 73 +
Frequency measurement, vhf, with hf receiver and scaler (HN) W3LB 90 May 77 +
Frequency meter, crystal controlled (HN) W5JSN 71 Sep 69
Frequency scaler, 500-MHz W6URH 32 Jun 75 +
Frequency scaler, divide-by-ten K4EEU 26 Aug 70
Frequency scaler, divide-by-ten Short circuit 72 Apr 71
Frequency scaler, divide-by-ten W6PBC 41 Sep 72
Frequency scaler, divide-by-ten Correction 90 Dec 72 +
Frequency scaler, divide-by-ten Added comments (letter) 64 Nov 73 +
Frequency scaler, uhf (11C90) WB9KEY 50 Dec 75 +
Frequency scalers, 1200-MHz WB9KEY 38 Feb 75 +
Frequency standard (HN) WA7JIK 69 Sep 72
Frequency standard, universal K4EEU 40 Feb 74 +
Frequency standard, universal Short circuit 72 May 74 +
Frequency synthesizer, high-frequency K2BLA 16 Oct 72
Frequency-rnarker standard using cmos W4IYB 44 Aug 77 +
Frequency-shift meter, RTTY VK3ZNV 33 Jun 70 +
Function generator, IC W1DTY 40 Aug 71 +
Function generator, IC K4DHC 22 Jun 74 +
Function generator, integrated circuit N3FG 30 Aug 80 +
Function/units indicator using LED displays K0FOP 58 Mar 77 +
Gallon-size dummy load W4MB 74 Jun 79 +
Gate-dip meter W3WLX 42 Jun 77 +
Gdo, new uses for K2ZSQ 48 Dec 68
Grid current measurement in grounded-grid amplifiers W6SAI 64 Aug 68
Grid-dip meter, no-cost W8YFB 87 Feb 78 +
Grid-dip oscillator, solid-state conversion of W6AJZ 20 Jun 70 +
Ground rod resistance K4MT 95 Jul 84 +
Ground rod resistance Comments 8 Sep 84 +
Ham radio techniques: time and frequency station WWVS, minibeam design, etc W6SAI 37 Jun 88 +
Harmonic generator (HN) W5GDQ 76 Oct 70
High-frequency receiver performance G4OBU 33 Feb 88 +
High-impedance Rotary Step Attenuator N2DCH 24 Feb 89 +
HP-IB greatly simplified Martin, Vaughn D. 65 Mar 88 +
I-f alignment generator 455-kHz WA5SNZ 50 Feb 74 +
IF sweep generator, compact PA0CX, DJ0SA 35 Jun 85 +
Impedance bridge (HN) W6KZK 67 Feb 70
Impedance bridge measurement errors and corrections K4KJ 22 May 79 +
Impedance bridge, low-cost RX W8YFB 6 May 73 +
Impedance bridge, simple WA9QJP 40 Apr 68
Impedance matching WB2NTQ 85 Jul 83 +
Impedance, measuring with swr bridge WB4KSS 46 May 75 +
Impulse generator, pulse-snap diode Siegal, Turner 29 Oct 72
Inductance meter, easy-to-build W6XM 76 Apr 82 +
Inductance meter, easy-to-build Comments, WB2LAO 8 Sep 82 +
Inductance meter, easy-to-build Short circuit 79 Oct 82 +
Instrumentation and the ham VE3GFN 28 Jul 68
Instrumentation series: oscilloscopes K7OWJ 49 Apr 90 +
Introduction to waveform generators - part 3 K4IPV 63 Jan 90 +
Introduction to Waveform Generators- pt 1 K4IPV 62 Sep 89 +
Introduction to Waveform Generators- pt 2 K4IPV 82 Dec 89 +
K4EEU frequency standard, battery backup for (HN) N4BA 68 Jul 81 +
Keeping an Eye on Your Sideband PEP-The Weekender GW4NAH 17 Sep 89 +
L and C measurements WB6ZLN 117 Oct 84 +
L, C, R bridge, universal W6AOI 54 Apr 76 +
l-f sweep generator K4DHC 10 Sep 73 +
LED millivoltmeter (Weekender) W0JF 82 Mar 90 +
Light-bulb dummy loads (HN) W6HPH 74 Oct 81 +
Line-voltage monitor (HN) WA8VFK 66 Jan 74 +
Linearity meter for ssb amplifiers W4MB 40 Jun 76 +
lntermodulation-distortion measurements on ssb transmitters W6VFR 34 Sep 74 +
Logic mate N9CZK 57 Jan 83 +
Logic monitor (HN) WA5SAF 70 Apr 72
Logic monitor (HN) Correction 91 Dec 72 +
Logic probe K9CW 83 Feb 79 +
Logic probe (HN) Rozenthal, J. 91 Apr 83 +
Logic probe, digital N6UE 38 Aug 80 +
Logic test probe VE6RF 53 Dec 73 +
Logic test probe (HN) Rossman 56 Feb 73 +
Logic test probe (HN) Short circuit 58 Dec 73 +
Low-cost spectrum analyzer with kilo-buck features W4UCH 82 Sep 86 +
Makeshift test equipment (HN) W7FS 77 Sep 68
Measuring inductances K6HIK 85 Jul 83 +
Measuring noise figure K2BLA 26 Jan 84 +
Measuring small values W6SDM 74 Aug 83 +
Meter amplifier, electronic WA9HUV 38 Dec 76 +
Meter amplifiers, calibrating W4OHT 80 Sep 78 +
Meter interface, high-impedance Laughlin 20 Jan 74 +
Meters, testing unknown (HN) W1ONC 66 Jan 71 +
Microfarad Counter,The PA0CX 85 May 89 +
Microphone calibration NY6U 73 Jun 84 +
Microwave marker generator, 3cm band (HN) WA4WDL 69 Jun 76 +
Milliammeters, how to use W4PSJ 48 Sep 75 +
Mini-spotter frequency checker W7OE 48 May 68
Monitorscope, miniature WA3FIY 34 Mar 69
Monitorscope, RTTY W3CIX 36 Aug 72
Multi-box (HN) W3KBM 68 Jul 69 +
Multi-featured function generator WA7IRY 9 Apr 88 +
Multiplexed counter displays (HN) K1XX 87 May 78 +
Multitester (HN) W1DTY 63 May 71 +
NBS time and frequency survey NBS 45 Jun 87 +
Noise bridge calculations with TI 58/59 calculators WD4GA1 45 May 78 +
Noise bridge construction (letter) OH2ZAZ 8 Sep 78 +
Noise bridge, antenna (HN) K8EEG 71 May 74 +
Noise bridge, precision K2ST 51 Mar 83 +
Noise bridge, precision Comments 8 Jun 83 +
Noise bridge, precision Short circuit 97 Aug 83 +
Noise figure measurements W6NBI 40 Aug 78 +
Noise figure measurements Comments, WB5LHV, W6NBI 6 Aug 79 +
Noise figure, vhf, estimating WA9HUV 42 Jun 75 +
Noise generator, 1296-MHz W3BSV 46 Aug 73 +
Noise generators, using (HN) K2ZSQ 79 Aug 68
Noise-figure measurements for vhf WB6NMT 36 Jun 72 +
Noise-figure meter, automatic, for preamplifiers and converters K9IMM 12 Feb 81 +
Novel Methods for Measuring Cable Attenuation OE2APM 65 May 89 +
Ode to older oscilloscopes KR6A 69 Jan 88 +
Ohmmeter, wide-range Bailey, John T. 53 Jan 84 +
Oscillator, audio W6GXN 50 Feb 73 +
Oscillator, frequency measuring W6IEL 16 Apr 72
Oscillator, frequency measuring Added notes 90 Dec 72 +
Oscillator, two-tone, for ssb testing W6GXN 11 Apr 72
Oscilloscope calibrator (HN) K4EEU 69 Jul 69 +
Oscilloscope voltage calibrator W6PBC 54 Aug 72
Oscilloscope, putting it to work Allen 64 Sep 69
Oscilloscope, troubleshooting amateur gear with Allen 52 Aug 69 +
Panoramic adaptor spectrum analyzer design notes Comments, K2CBY 12 Sep 83 +
Panoramic adaptor spectrum analyzer design notes WA6NCX/1 26 Sep 83 +
Panoramic adaptor spectrum analyzer design notes Short circuit 70 Oct 83 +
Panoramic reception, simple W2EEY 14 Sep 68
Peak envelope power, how to measure W5JJ 32 Nov 74 +
PEP output power measurement VK3AFO 10 Jun 83 +
PEP output power measurement Comments, K4KYV 12 Sep 83 +
PEP Wattmeter WA1SPI 76 Oct 89 +
Phase meter, rf VE2AYU, Korth 28 Apr 73 +
Power meter, rf K8EEG 26 Oct 73 +
Power meter, rf, how to use (repair bench) W6NBI 44 Apr 77 +
Practically speaking K4IPV 79 Dec 85 +
Practically Speaking: analog meter movements: how to use them K4IPV 68 Mar 90 +
Practically Speaking: Antenna System Instruments K4IPV 82 Feb 89 +
Practically speaking: build your own time-domain refiectometer K4IPV 69 Jun 87 +
Practically speaking: building 'the poor man's spectrum analyzer' K4IPV 99 Mar 87 +
Practically speaking: function generator circuits - part2 K4IPV 89 Jan 87 +
Practically speaking: generating low i-f frequencies K4IPV 49 Dec 87 +
Practically Speaking: More Digitally Generated Sawtooth Plus Triangle Waves K4IPV 78 Jul 89 +
Practically Speaking: review of a low cost commercial spectrum analyzer K4IPV 64 Feb 90 +
Practically speaking: revisiting 'the poor man's spectrum analyzer' K4IPV 49 Sep 87 +
Practically Speaking: RF Wattmeters and Antenna VSWR Meters K4IPV 75 Mar 89 +
Practically Speaking: some analog meter applications K4IPV 36 Apr 90 +
Practically Speaking: Test Equipment for Digital Electronics K4IPV 76 Nov 89 +
Practically speaking: testing diodes K4IPV 65 Feb 87 +
Practically speaking: troubleshooting DC power supplies with an oscilloscope K4IPV 57 Oct 87 +
Practically speaking: using antenna noise bridge K4IPV 69 May 86 +
Practically speaking: using the digital frequency counter- some pitfalls K4IPV 47 Apr 88 +
Practically speaking: using the multimeter K4IPV 43 Jul 86 +
Practically speaking: using the right multimeter K4IPV 95 Jun 86 +
Practically speaking: using voltage comparators K4IPV 49 Nov 87 +
Pre-scaler, vhf (HN) W6MGI 57 Feb 73 +
Precision capacitor W4BRS 61 Mar 68
Precision crystal frequency checker (Weekender) N4TMI 44 Jun 90 +
Prescaler, 1-GHz, for frequency counters W6NBI 84 Sep 78 +
Prescaler, 600-Hz, for use with electronic counters WA1SPI 50 Apr 80 +
Prescaler, Improvements for W6PBC 30 Oct 73 +
Prescaler, vhf, for digital frequency counters K4GOK 32 Feb 76 +
Probe, sensitive rf (HN) W5JJ 61 Dec 74 +
Q measurement G3SBA 49 Jan 77 +
Q Meters W3QOM 49 Dec 89 +
QRP wattmeter (HN) W6XM 110 Jul 84 +
Radio Shack meters, internal resistance Katzenberger 94 Nov 77 +
Receiver alignment Allen 64 Jun 68
Receiver sweep alignment system WB6BIH 124 Nov 84 +
Reflected power limiter K4KI 63 Jul 88 +
Reflectometers K1YZW 65 Dec 69 +
Regenerative detectors and a wideband amplifier for experimenters W8YFB 61 Mar 70 +
Repairs, thinking your way through Allen 58 Feb 71 +
Required dynamic range and design guides for EMI/RFI test receivers DJ2LR 70 Nov 83 +
Resistance standard, simple (HN) W2OLU 65 Mar 71
Resistance values below 1 ohm, measuring W4OHT 66 Sep 77 +
Resistance values below 1 ohm, measuring (letter) W1PT 91 Jan 78 +
Resistance values, measuring below 1 ohm W4OHT 66 Sep 77 +
Resistor decades, versatile W4ATE 66 Jul 71
Rf current probe (HN) W6HPH 76 Oct 68
Rf current readout, remote (HN) W4ATE 87 May 78 +
Rf detector, sensitive WB9DNI 38 Apr 73 +
Rf generator clip W1DTY 58 Mar 68
Rf power meter, low-level W5WGF 58 Oct 72
Rf power meter, part 1: instrument description and construction N6YC 70 May 81 +
Rf power meter, part 2: measurements and measurement accessories N6YC 55 Jun 81 +
Rf power meter, part 2: measurements and measurement accessories Comments, W3NQN 6 Oct 81 +
Rf signal generator, solid-state VE5FP 42 Jul 70
Rf wattmeter, accurate low power WA4ZRP 38 Dec 77 +
RTTY monitor scope, solid-state WB2MPZ 33 Oct 71 +
RTTY signal generator W7ZTC 23 Mar 71
RTTY signal generator Short circuit 96 Dec 71 +
RTTY test generator WB9ATW 64 Jan 78 +
RTTY test generator (HN) W3EAG 67 Jan 73 +
RTTY test generator (HN) W3EAG 59 Mar 73 +
RX impedance bridge W2CTK 34 Sep 70 +
RX impedance bridge, low-cost W8YFB 6 May 73 +
RX noise bridge, improvements to W6BXI, W6NKU 10 Feb 77 +
RX noise bridge, improvements to Comments 100 Sep 77 +
S-meter readings (HN) W1DTY 56 Jun 68
Safer suicide cord (HN) K6JYO 64 Mar 71
Sampling network, rf - the milli-tap W6QJW 34 Jan 73 +
Sensitive LF or HF field-strength meter K1RGO 67 Sep 86 +
Sensitive RF Voltmeter, The Weekender: N2DCH 62 Jul 89 +
Signal generator, tone moduiated for two and six meters WA8OIK 54 Nov 69 +
Signal generator, wide range W6GXN 18 Dec 73 +
Signal injection in ham receivers Allen 72 May 68
Signal source for 432 and 1296 MHz K6RIL 20 Sep 68
Signal tracing in ham receivers Allen 52 Apr 68
Simple DC Amplifier for Your Meter W0JF 10 Jun 89 +
Simple low-cost comb generator frequency calibrator Martin, Larry 78 Jul 88 +
Slotted line, how to use (repair bench) W6NBI 58 May 77 +
Slow-scan tv test generator K4EEU 6 Jul 73 +
Solid-state replacements AK7N 46 Apr 83 +
Spectrum analysers, understanding WA5SNZ 50 Jun 74 +
Spectrum analyzer for ssb W3JW 24 Jul 77 +
Spectrum analyzer tracking generator W6URH 30 Apr 78 +
Spectrum analyzer, dc-100 MHz W6URH 16 Jun 77 +
Spectrum analyzer, dc-100 MHz Short circuit 69 Dec 77 +
Spectrum analyzer, dc-100 MHz Short circuit 94 Feb 79 +
Spectrum analyzer, four channel W9IA 6 Oct 72
Spectrum analyzer, microwave N6TX 34 Jul 78 +
Ssb, signals, monitoring W6VFR 35 Mar 72
Standing wave indicator GW8FKB 97 Nov 83 +
Sweep generator, how to use Allen 60 Apr 70
Sweep generator, stable wideband W7BAR 18 Jun 81 +
Sweep generator, stable wideband Short circuit 84 Nov 81 +
Sweep response curves for low-frequency l-f's Allen 56 Mar 71
Switch-off flasher (HN) Thomas 64 Jul 71
Swr bridge WB2ZSH 55 Oct 71 +
Swr bridge (HN) WA5TFK 66 May 72 +
Swr bridge and power meter, integrated W6DOB 40 May 70 +
Swr bridge readings (HN) W6FPO 63 Aug 73 +
SWR bridges K2LB 37 Mar 86 +
Swr indicator, aural, for the visually handicapped K6HTM 52 May 76 +
Swr indicator, how to use (repair bench) W6NBI 66 Jan 77 +
Swr measuring at high frequencies DJ2LR 34 May 79 +
Swr meter W6VSV 6 Oct 70
Swr meter WB6AFT 68 Nov 78 +
Swr meter for the high-frequency bands WB6AFT 62 Oct 81 +
Swr meter for the high-frequency bands Comments, WA4UPN, WB6AFT 36 Mar 82 +
Swr meter, improving (HN) W5NPD 68 May 76 +
Swr meters, direct reading and expanded scale WA4WDK 28 May 72 +
Swr meters, direct reading and expanded scale Correction 90 Dec 72 +
Test DBMs for diode leakage WB6BIH 86 Jun 87 +
Test probe accessory (HN) W2IMB 89 Jul 77 +
Test-equipment mainframe W4MB 52 Jul 79 +
Tester for 6146 tubes (HN) W6KNE 81 Aug 78 +
Testing power tubes K4IPV 60 Apr 78 +
The Guerri report: signal processing W6MGI 156 Dec 84 +
Time and frequency standards: part1 Martin, Vaughn D. 36 Nov 83 +
Time and frequency standards: part2 Martin, Vaughn D. 31 Dec 83 +
Time-base oscillators, improved calibration WA7LUJ, WA7KMR 70 Mar 77 +
Time-domain reflectometry, experimenter's approach to WA0PIA 22 May 71 +
Toroid permeability meter W6RJO 46 Jun 77 +
Transconductance tester for fets W6NBI 44 Sep 71
Transformer shorts W6BLZ 36 Jul 68
Transistor and diode tester ZL2AMJ 65 Nov 70
Transistor curve tracer WA9LCX 52 Jul 73 +
Transistor curve tracer Short circuit 63 Apr 74 +
Transistor Lead Identification with a DVM K0GSS 62 Oct 89 +
Transistor tester WA6NIL 48 Jul 68
Transistor tester for leakage and gain W4BRS 68 May 68
Transistor tester, shirt pocket W0MAY 40 Jul 76 +
Transmitter tuning aid: buffer your load with this resistive network (weekender) K4KI 52 Feb 84 +
Transmitter tuning unit for the blind W9NTP 60 Jun 71
Trapezoidal monitor scope VE3CUS 22 Dec 69 +
Troubleshooting around fets Allen 42 Oct 68
Troubleshooting by resistance measurement Allen 62 Nov 68
Troubleshooting transistor ham gear Allen 64 Jul 68
Tune-up method, low duty-cycle for transmitters (HN) K4KI 62 Aug 83 +
Tune-up method, low duty-cycle for transmitters (HN) Comments, W5XW 11 Dec 83 +
Tune-up method, low duty-cycle for transmitters (HN) Comments, K4KI 11 Jan 84 +
Tuneup, safe, silent K4KI 123 Dec 84 +
Turn-off timer for portable equipment W5OXD 42 Sep 76 +
TVI locator W6BD 24 Aug 78 +
Two in one: trace doubler for CRO, and square wave and pulse generator (HN) Short circuit 26 Jan 90 +
Two in one: Trace doubler for CRO, and square wave and pulse generator (HN) Tseng Liao 26 Dec 88 +
Two-tone generator N1RM 32 Jun 82 +
Two-tone signal generator YB9ATA/WA7AQN 25 Feb 86 +
Two-tone signal generator Short circuit 45 Apr 86 +
Two-tone signal generator Short circuit 36 Jun 86 +
Two-tone signal generator (HN) K4KI 77 Sep 82 +
Uhf tuner tester for tv sets (HN) Schuler 73 Sep 69
Understanding noise figure Gruchalla, Michael 89 Apr 87 +
Using the Astro 103 as a frequency counter (HN) W4ATE 69 Jun 83 +
Vacuum tubes, testing high-power (HN) W2OLU 64 Mar 72
Versatile Transistor/Diode Tester W5JQE & W2YM 30 Aug 89 +
VHF noise bridge OE2APM/AA3K 10 Jul 86 +
Vhf pre-scaler, improvements for W6PBC 30 Oct 73 +
Vhf prescaler W8CHK 92 Jun 78 +
VHF/UHF world W1JR 55 Oct 84 +
Video monitor, inexpensive K8CG 12 Apr 83 +
Video monitor, inexpensive Comments, K9TA 10 Aug 83 +
VLF dip meter, no-adjust bias for (HN) WB3IDJ 69 Jul 80 +
Voltage calibrator for digital voltmeters W6NBI 66 Jul 78 +
Voltage calibrator for digital voltmeters Short circuit 94 Feb 79 +
Voltmeter calibrator, precision Woods, Hubert 94 Jun 78 +
Voltmeter, improved transistor, part I Maddever 74 Apr 68
Voltmeter, transistor, part II Maddever 60 Jul 68
Vom/vtvm, added uses for (HN) W7DI 67 Jan 73 +
VSWR and power meter, automatic W0INK 34 May 80 +
VSWR bridge, broadband power-tracking K1ZDI 72 Aug 79 +
VSWR indicator, computing WB9CYY 58 Jan 77 +
VSWR indicator, computing Short circuit 94 May 77 +
Vtvm modification W6HPH 51 Feb 69 +
Vtvm, convert to an IC voltmeter K6VCI 42 Dec 74 +
Wattmeter, low power (letter) W0DLQ 6 Jan 80 +
Wavemeter, indicating W6NIF 26 Dec 70
Wavemeter, indicating Short circuit 72 Apr 71
Weak-signal source, 144 and 432 MHz K6JC 58 Mar 70 +
Weak-signal source, stable, variable-output K6JYO 36 Sep 71
Weather radar, 10-GHZ K4TWJ 61 Sep 83 +
Wide range inductance meter K9EBA 52 Feb 83 +
Wide-range RF power meter KA8OBL 24 Apr 86 +
Wideband Frequency Analyzer AA4FB 9 Nov 89 +
Wien Bridge oscillators, voltage-controlled resistance for WA5SNZ 56 Feb 80 +
Wien Bridge oscillators, voltage-controlled Zener diode test circuit W3PHK 52 Feb 83 +
WWV receiver, simple regenerative WA5SNZ 42 Apr 73 +
WWV-WWVH, amateur applications for W3FQJ 53 Jan 72
WWVB signal processor W9BTI 28 Mar 76 +
Zener tester, low-voltage (HN) K3DPJ 72 Nov 69 +


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