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filteraf.txt
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1994-11-27
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QST ARTICLE BIBLIOGRAPHY - Filters, audio
Thank you for requesting the following information from the ARRL
Technical Information Service (TIS) or the ARRL Automated
Information Server (Internet: info@arrl.org). ARRL HQ is glad to
provide this information free of charge as a service to League
members and affiliated clubs.
For your convenience, you may reproduce this information,
electronically or on paper, and distribute it to anyone who needs
it, provided that you reproduce it in its entirety and do so free
of charge. Paper copies of these bibliographies are available from
the ARRL Technical Department Secretary. Send a separate SASE for
each bibliography desired to:
ARRL Administrative Headquarters
Technical Department Secretary
225 Main St.
Newington, CT 06111
Electronic copies are also available from the following:
Telephone bulletin boards:
N8EMR - (614) 895-2553
ARRL - (203) 666-0578
Internet sites:
Info@arrl.org (E-mail only: Send an E-mail with the message text
"Help" for instructions)
oak.oakland.edu (FTP - pub/hamradio/arrl/infoserver)
-------------------------------------------------------------------
ARTICLE REPRINT INFORMATION
Article reprints can be obtained from the Technical Department
Secretary at the address or phone number below. The nominal
fee for article reprints is $3 per article, which you will be
billed.
ARRL Administrative Headquarters
225 Main St.
Newington, CT 06111
Telephone: (203) 666-1541
Back issues can be obtained from the Circulation Department at the
address or phone number above. Back issues are $5, and quantities
are limited.
------------------------------------------------------------------
1978 April QST p. 14
The State-Variable Filter
June QST p. 30
The ABC Active Filter
December QST p. 35
The Club Filter (cw af filter)
1979 January QST p. 42
The CW Filter-Limiter
April QST p. 15
A Simple CW Audio Filter
1980 July QST p. 17
Active Filters
September QST p. 29
What is a Filter?
December QST p. 14
Modern Design of a CW Filter Using 88-
and 44-mH Surplus Inductors
1981 October QST p. 38
Beating Rotten QRM - CW Filtering for
the Beginner
1982 February QST p. 18
Build an Audio Filter with Pizazz 5 pages
April QST p. 33
Concept and Construction of a CW Filter 4 pages
and Enhancer
1983 April QST p. 32
A Dichotic Detector for CW 3 pages
QST p. 35
An Electro-Acoustic CW Filter 4 pages
QST p. 45
Understanding and Using Audio Filters 4 pages
October QST p. 14
A Tunable CW Filter 3 pages
1984 March QST p. 19
Switched Capacitor Filters - An 7 pages
Engineering Technology for Amateur
Radio Use
July QST p. 11
Digital Switched-Capacitor Filters - 5 pages
A Practical Construction Project
1985 April QST p. 23
A High Performance CW Demodulator 5 pages
1986 February QST p. 15
A Simple Effective Receiving Aid 5 pages
(Stereo audio filter)
April QST p. 13
SuperSCAF and Son - a Pair of Swithed- 7 pages
Capacitor Audio Filters
December QST p. 32
Digital Signal Processing - A Modern 8 pages
Audio Filter
1992 October QST p. 27
An Active Audio CW Filter You Can Build
1993 May QST p. 62
Do You Need an Audio Filter?