hr index - receivers and converters - general

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Active mixers, performance capability: part 1 DJ2LR 30 Mar 82 +
Active mixers, performance capability: part 2 DJ2LR 38 Apr 82 +
Antenna impedance transformer for receivers (HN) W6NIF 70 Jan 70 +
Antenna tuner, miniature receiver (HN) WA7KRE 72 Mar 69
Anti-QRM methods W3FQJ 50 May 71 +
Attenuation pads, receiving (letter) K0HNQ 69 Jan 74 +
Audio agc amplifier WA5SNZ 32 Dec 73 +
Audio agc principles and practice WA5SNZ 28 Jun 71
Audio amplifier and squelch circuit W6AJF 36 Aug 68
Audio filter for CW, tunable WA1JSM 34 Aug 70
Audio filter mod (HN) K6HIU 60 Jan 72
Audio filter, simple W4NVK 44 Oct 70
Audio filter, tunable peak-notch W2EEY 22 Mar 70 +
Audio filter, variable bandpass W3AEX 36 Apr 70
Audio filter-frequency translator for CW reception W2EEY 24 Jun 70 +
Audio filters for ssb and CW reception K6SDX 18 Nov 76 +
Audio filters, CW (letter) 6Y5SR 56 Jun 75 +
Audio module, complete K4DHC 18 Jun 73 +
Audio processor, communications, for reception W6NRW 71 Jan 80 +
Audio, improved for receivers K7GCO 74 Apr 77 +
Audio-filters, inexpensive W8YFB 24 Aug 72
Auto-product detection of double-sideband K4UD 58 Mar 80 +
Auto-product detection of double-sideband Letter G3JIP 6 Oct 80 +
Automatic repeater/receiver sensitivity (HN) VE7ABK 81 Jan 82 +
Bandspreading techniques (letter) Anderson, Leonard H. 6 Jan 79 +
Bandspreading techniques for resonant circuits Anderson, Leonard H. 46 Feb 77 +
Bandspreading techniques for resonant circuits Short circuit 69 Dec 77 +
Bandspreading techniques for resonant circuits (letter) W0EJO 6 Aug 78 +
Batteries, how to select for portable equipment WA0AIK 40 Aug 73 +
Bfo multiplexer for a multimode detector WA3YGJ 52 Oct 75 +
Bragg-cell receiver WB3JZO 42 Feb 83 +
Broadband jfet amplifiers N6DX 12 Nov 79 +
Calibrator crystals (HN) K6KA 66 Nov 71 +
Calibrator, plug-in frequency K6KA 22 Mar 69
Calibrator, simple frequency-divider using mos ICs W6GXN 30 Aug 69 +
Cascaded stages, IMD and intercept points of W3IMG 28 Nov 84 +
CB to 10-meter conversions, scanner W2FMY, KB2GA 98 Nov 85 +
Communications receiver K2BLA 12 Jul 82 +
Communications receivers, calculating the cascade intercept point of WA7TDB 50 Aug 80 +
Communications receivers, design ideas for Moors 12 Jun 74 +
Communications receivers, designing for strong-signal performance Moors 6 Feb 73 +
Compact 75-meter monoband transceiver K1BQT 13 Nov 85 +
Compact 75-meter monoband transceiver Short circuit 66 Jan 86 +
Converting a vacuum-tube receiver to solid-state W1OOP 26 Feb 69 +
Counter dials, electronic K6KA 44 Sep 70 +
Crystal ladder filters, systematic design of N7WD 40 Feb 82 +
Crystal-filter design, practical PY2PEC 34 Nov 76 +
CW filter, adding (HN) W2OUX 66 Sep 73 +
CW filter, high performance W3NON 18 Apr 81 +
CW filter, high performance Comments W3NQN 6 Nov 81 +
CW monitor, simple WA9OHR 65 Jan 71 +
CW processor for communications receivers W6NRW 17 Oct 71 +
CW reception, enhancing through a simulated-stereo technique WA1MKP 61 Oct 74 +
CW reception, noise reduction for W2ELV 52 Sep 73 +
CW regenerator for interference-free communications Leward, Libenschek 54 Apr 74 +
CW selectivity with crystal bandpassing W2EEY 52 Jun 69 +
CW transceiver operation with transmit-receive offset W1DAX 56 Sep 70 +
Detector, logarithmic with post-injection marker generator W1ERW 36 Mar 80 +
Detector, reciprocating W1SNN 32 Mar 72
Detector, reciprocating Added notes 54 Mar 74 +
Detector, reciprocating Added notes 76 May 75 +
Detector, single-signal phasing type WB9CYY 71 Oct 76 +
Detector, single-signal phasing type Short circuit 68 Dec 77 +
Detector, superregenerative, optimizing Ring 32 Jul 72
Detectors, fm, survey of W6GXN 22 Jun 76 +
Detectors, ssb Belt 22 Nov 68
Digital display N3FG 40 Mar 79 +
Digital display Comments 6 Jul 79 +
Digital frequency display WB2NYK 26 Sep 76 +
Digital frequency readout using the Commodore 64 W3NNL 83 Nov 85 +
Digital readout, universal WB8IFM 34 Dec 78 +
Digital vfo basics Earnshaw 18 Nov 78 +
Diode detectors W6GXN 28 Jan 76 +
Diode detectors Comments 77 Feb 77 +
Direct-conversion receivers (HN) YU2HL 100 Sep 78 +
Diversity receiving system W2EEY 12 Dec 71 +
Diversity reception K4KJ 48 Nov 79 +
Double-balanced mixer, active, high-dynamic range DJ2LR 90 Nov 77 +
Dynamic range, measuring WB6CTW 56 Nov 79 +
Elmer's notebook: receiver buzzwords W1SL 100 Nov 87 +
Extending receive coverage for the IC-02 and IC-04 WB6GTM 77 Jul 86 +
External product detector improves receiver performance W6GB 107 Nov 85 +
Famous Equipment of Yesteryear K4KJ 43 Nov 89 +
Filter alignment W7UC 61 Aug 75 +
Filter, vari-Q W1SNN 62 Sep 73 +
Frequency calibration using 60 kHz WWVB W4ZPS 45 Mar 88 +
Frequency calibrator, how to design W3AEX 54 Jul 71
Frequency calibrator, receiver W5UQS 28 Dec 71 +
Frequency measurement of received signals W4AAD 38 Oct 73 +
Frequency spotter, general coverage W5JJ 36 Nov 70
Frequency standard (HN) WA7JIK 69 Sep 72
Frequency standard, universal K4EEU 40 Feb 74 +
Frequency standard, universal Short circuit 72 May 74 +
Frequency-marker standard using cmos W4IYB 44 Aug 77 +
Ham radio techniques: "white noise" revisited W6SAI 79 Oct 87 +
Ham radio techniques: "white noise" technology bites back W6SAI 55 Jan 87 +
Hang agc circuit for ssb and CW W1ERJ 50 Sep 72
Headphone cords (HN) W2OLU 62 Nov 75 +
High dynamic range mixing with the Si8901 KB6QJ 11 Mar 88 +
High-stability BFO for receiver applications K1ZJH 28 Jun 85 +
I-f amplifier design DJ2LR 10 Mar 77 +
I-f amplifier design Short circuit 94 May 77 +
I-f detector receiver module K6SDX 34 Aug 76 +
I-f system, multimode WA2IKL 39 Sep 71
I-f transformers, problems and cures - Weekender K4IPV 56 Mar 79 +
I.f cathode jack W6HPH 28 Sep 68
Image suppression (HN) W6NIF 68 Dec 72 +
Intelligibility of communications receivers, improving WA5RAQ 53 Aug 70
Interference, electric fence K6KA 68 Jul 72
Interference, hi-fi (HN) K6KA 63 Mar 75 +
Interference, rf W1DTY 12 Dec 70
Interference, rf WA3NFW 30 Mar 73 +
Interference, rf, its cause and cure G3LLL 26 Jun 75 +
Intermodulation distortion, reducing in high-frequency receivers WB4ZNV 26 Mar 77 +
Intermodulation distortion, reducing in high-frequency receivers Short circuit 69 Dec 77 +
LF converter, fixed-tuned K1RGO 19 Jan 83 +
Linear Tuning with a War Surplus Capacitor N2DCH 40 Jun 89 +
Local oscillator, phase-locked VE5FP 6 Mar 71
Local-oscillator waveform effects on spurious mixer responses Robinson, Smith 44 Jun 74 +
Low-noise Design Primer WB4EHS 80 Nov 89 +
Low-noise preamplifiers with good impedance match W1OOP 36 Nov 82 +
Measuring receiver dynamic range: an addendum (HN) WB6CTW 86 Apr 81 +
Mixer frequencies, graphical selection W2HVN 41 Jun 88 +
Mixer, crystal W2LTJ 38 Nov 75 +
Monitor receiver modification (HN) W2CNQ 72 Feb 76 +
Multiple receivers on one antenna (Two for one) (HN) W2OZY 72 Jun 80 +
Noise blanker K4DHC 38 Feb 73 +
Noise Blanker W5QJR 54 Feb 79 +
Noise blanker design K7CVT 26 Nov 77 +
Noise blanker, hot-carrier diode W4KAE 16 Oct 69 +
Noise blanker, hot-carrier diode Short circuit 76 Sep 70 +
Noise blanker, IC W2EEY 52 May 69 +
Noise blanker, IC Short circuit 79 Jun 70 +
Noise discriminator, a pulsewidth W6NRW 23 Nov 84 +
Noise effects in receiving systems DJ2LR 34 Nov 77 +
Noise figure relationships (HN) W6WX 70 Apr 80 +
Noise figure, the real meaning of K6MIO 26 Mar 69
Noise, understanding and handling DJ2LR 10 Nov 86 +
Optimizing the QF-1A Audio Filter VE7BS 38 Dec 89 +
Panoramic adaptor spectrum analyzer design notes WA6NCX/1 26 Feb 83 +
Panoramic adaptor spectrum analyzer design notes Comments, K2CBY 12 Sep 83 +
Panoramic adaptor spectrum analyzer design notes Short circuit 70 Oct 83 +
Panoramic reception, simple W2EEY 14 Oct 68
Phase-locked 9-MHZ bfo W7GHM 49 Nov 78 +
Phase-shift networks, design criteria G3NRW 34 Jun 70 +
Phaselocked up-converter W7GHM 26 Nov 79 +
Power-line noise K4TWJ 60 Feb 79 +
Preamp at work, Quiet! N6TX 14 Nov 84 +
Preamplifier, wideband W1AAZ 60 Oct 76 +
Product detector, hot-carrier diode VE3GFN 12 Oct 69 +
Radio-direction finder W6JTT 38 Mar 70 +
Radio-frequency interference WA3NFW 30 Mar 73 +
Radiotelegraph translator and transcriber W7CUU, K7KFA 8 Nov 71 +
Radiotelegraph translator and transcriber Eliminating the matrix KH6AP 60 May 72 +
Receiver dynamic range W3JZO 77 Dec 82 +
Receiver dynamic range (letter) AA6PZ 7 Aug 80 +
Receiver impedance matching (HN) W0ZFN 79 Aug 68
Receiver input temperature (letter) WA6JTD 13 Apr 85 +
Receiver spurious response Anderson 82 Nov 77 +
Receiver tuning mechanism selection PY2PE1C 31 Nov 86 +
Receiver, 10 through 80-meter homebrew N1BFV 40 Nov 85 +
Receivers - some problems and cures WB0JGP, K8RAH 10 Dec 77 +
Receivers - some problems and cures Ham notebook 94 Oct 78 +
Receivers - some problems and cures Short circuit 94 Feb 79 +
Receiving RTTY, automatic frequency control for W5NPO 50 Sep 71
Reciprocating detector as fm discriminator W1SNN 18 Mar 73 +
Reciprocating-detector converter W1SNN 58 Sep 74 +
Remote-site receivers and repeater operation K9EID 36 Jan 83 +
Resurrecting old receivers K4IPV 52 Dec 76 +
Rf amplifier, wideband WB4KSS 58 Apr 75 +
Rf amplifiers for communications receivers Moors 42 Sep 74 +
Rf amplifiers, isolating parallel currents in G3IPV 40 Feb 77 +
Rf-agc amplifier, high-performance WA1FRJ 64 Sep 78 +
Rotary dial and encoder for digital tuning N3CA 30 Dec 82 +
S-meter readings (HN) W1DTY 56 Jun 68
S-meter, a calibrated W7SX 23 Jan 86 +
S-meter, a calibrated Short circuit 45 Apr 86 +
S-meters, solid-state K6SDX 20 Mar 75 +
Selectivity and gain control, improved VE3GFN 71 Nov 77 +
Selectivity, receiver (letter) K4ZZV 68 Jan 74 +
Sensitivity, noise figure and dynamic range W1DTY 8 Oct 75 +
Signal-strength, measuring W2YE 20 Aug 80 +
Signals, how many does a receiver see? DJ2LR 58 Jun 77 +
Signals, how many does a receiver see? Comments 101 Sep 77 +
Spectrum analyzer, a handheld optical WA4WDL 23 Apr 84 +
Spectrum analyzer, four channel W9IA 6 Oct 72
Squelch, audio-actuated K4MOG 52 Apr 72
Ssb signals, monitoring W6VFR 36 Mar 72
Superhet tracking calculations WA5SNZ 30 Oct 78 +
Superregenerative detector, optimizing Ring 32 Jul 72
Superregenerative receiver, improved JA1BHG 48 Dec 70
Talking clock (letter) N9KV 75 Feb 80 +
Talking digital readout (letter) N5AF 6 May 80 +
Ten-Tec Argosy, Upgrade WB3JZO 38 Nov 86 +
Threshold-gate/limiter for CW reception W2ELV 46 Jan 72
Threshold-gate/limiter for CW reception Added notes (letter) W2ELV 59 May 72 +
Troubleshooting the dead receiver K4IPV 56 Jun 76 +
True frequency digital readout for the HW-101 NU4F 8 Jan 87 +
True frequency digital readout for the HW-101 Short circuit 41 Aug 88 +
TS-930S headset audio, increased undistorted (HN) W6FR 128 Oct 85 +
Two-Loop 10-Hz Step 40-70 MHz Synthesizer PY1LL & C Mathias 24 Jan 89 +
Vacuum-tube receivers, updating W6HPH 62 Dec 78 +
Vacuum-tube receivers, updating Short circuit 73 Dec 79 +
VHF/UHF world: broadband amplifiers in receiver design W1JR 91 Nov 86 +
VHF/UHF world: high dynamic range receivers W1JR 97 Nov 84 +
VHF/UHF world: high dynamic range receivers Short circuit 103 Jan 85 +
VHF/UHF world: low noise receiver update - part1 W1JR 77 Nov 87 +
Vlf converter (HN) W3CPU 69 Jul 76 +
Weak signal reception in CW receivers ZS6BT 44 Nov 71 +
Wideband amplifier summary DJ2LR 34 Nov 79 +
WWV receiver, five-frequency W6GXN 36 Jul 76 +


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