Mark Mandelkern, K5AM
Ham Radio Articles
Homebrew Transceiver
A Sensitive Integrating Squelch, QST, August, 1988, 27-29.
pdf
Evasive Noise Blanking, QEX, August, 1993, 3-6.
pdf
A High-Performance AGC System for Homebrew Transceivers, QEX,
October, 1995, 12-22.
pdf
[Corrections in QEX, Jul/Aug 2000, p.59.]
A High-Performance Homebrew Transceiver: Part 1, QEX, Mar/Apr, 1999, 16-24.
pdf
[General plan]
A High-Performance Homebrew Transceiver: Part 2, QEX, Sept/Oct, 1999, 3-8.
pdf
[IF board; notes in QEX, Nov/Dec 2000, p.60.]
A High-Performance Homebrew Transceiver: Part 3, QEX, Nov/Dec, 1999, 41-51.
pdf
[RF board; corrections, QEX Jul/Aug 2000, p.59, QEX Nov/Dec 2000, p.60.]
A High-Performance Homebrew Transceiver: Part 4, QEX, Jan/Feb, 2000, 47-56.
pdf
[AF board]
A High-Performance Homebrew Transceiver: Part 5, QEX, Mar/Apr, 2000, 23-37.
pdf
[Logic board, etc; corrections in QEX, Nov/Dec 2000, p.60.]
HF Circuits for a Homebrew Transceiver, QEX, Nov/Dec, 2001, 20-42.
photos
pdf
Amplifiers
HF+6M.
A Low-Drive, High-Power All-Band Tetrode Linear Amplifier,
CQ, July, 1990, 60-65. pdf
144 MHz, 4CX1000A, two articles. pdf
A Luxury Linear, QEX, May, 1996, 3-12. (Photos also in
QST, July 1996, p.19.)
Design Notes for "A Luxury Linear"
Amplifier, QEX, November, 1996, 13-20.
Protecting Power Tetrodes, QST, November, 1989, 22-25. pdf
ALC for Class AB1 Amplifiers, QST, July, 1986, 38-39, 47.
pdf
Amplifier Cool-Down Circuits, QST, March, 1989, 35-36.
Overload Protecton for High Voltage Power Supplies.
pdf
Antenna Relay Sequencing, Ham Radio, October, 1987, 17-26.
pdf
A Homebrew Contest Station, NCJ, July/August, 1998, 12-13.
link
(Photo also in QST, February
1999, p.84.)
An Automatic, Remote Antenna-Tuning Controller, QST, September,
1995, 46-49.
The AMSAFID: An Automatic Microphone Switcher Amplifier Filter
Integrator Distributor, QST,
November, 1995, 47-49.
The Hapirat - An Audio and Computer Control Panel, QST, Sept 2004,
28-33.
Expanded version:
pdf
k5am home page
math