Audio/LF for radio

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Fil	Tittel	Forfatter	Magasin	Nr.	Side
HF-395 AM-FM Bredbåndsforsterker	Jostykit
Førsterkare for 144 Mhz (Beste preamp hittil)	SM6CKU, Bengt-Arne Jøkert	QTC	10.1979	346
Chopped stabilized operational amplifiers	J. Ruffel	Elektor Electronics	December 1990	44
Bygg ditt eget headset	SM0AJV Ingemar Fogelberg	QTC	10.1994	51
Isolating amplifiers		Elektor Electronics		49
Lågbrusforsterkare	SM0PYP Paul Chuminski	QTC	12. 1993	59
LF-forsterker, Watt	LA7GF Hans	Amatørradio	Februar 1987	48
Using the Mar-X series of very wideband monolithic microwave integrated circuits (MMIC)	Joseph J. Can	Elektor Electronics	October 1992	52
Preamp for WEFAX och APT		QTC	11.1995	24
A Ham Radio Public Utility HF Station	W4MQ Stan Schretter, K6WR Brad Wyatt, W7DXX Keith Lamonica	QST	November 1992	39
Repeater-Squelch	LA6QM Åge Karlsen	Amatørradio	Mai 1987	134
VHF Forforsterker	LA4HK	Amatørradio	10. 1970	159
Remote-Controlled HF Operation over the Internet	K6WR Brad Wyatt	QST	November 2001	47
Från vegguttak til antenn, Andra kopplingar med IC	SM5BUJ, Lennart Raneback	QTC	12. 1993	35
HF-måling III, Attenuator	OZ8XW, Flemming Hessel	OZ	Mars 1990	138
Båndpassfilter med operasjonsforsterker og RC nettverk	Ola W. Dyngevold	Amatørradio		81
Bredbåndsforstærker: En MAR, en Monotolithic AmplifieR	OZ5WK, K. Wagner	OZ	August 1997	449
Capacitors for RF Applications		Elektor Electronics	September 1989	28
Moderne aktive LF-filtre	OZ8T	OZ	December 1993	730
Dealing with noise and interference in electronic instrumentation circuits, Shielding, filtering and using low noice amplifiers		Elektor Electronics	July 1992	20
Single-supply op-amps		Electronics World	May 1998	413
Switch capacitor filtre	LA3JT	Amatørradio	April 1991	26
Designing Active AC filters	Joseph J. Carr	Electronics Now	March 1997	52
DSP filter	W9GR
Filters using negative resistance		Electronics World	March 1997	217
Frequency-programmable analogue band-pass filter		Electronics World	March 1997	234
HF-Clipper fur Sprachsignale	DJ8ES Wolfgang Schneider	Funk Amateur	5/98	570
Higher-order elliptic filter design		Electronics World	September 1997	766
QRN Squasher upgrades	W1FB Doug DeMaw	QST	July 1997	62
Minifilter	OZ5RM Rick Meinstrup	OZ	Mars 1997	146
DSP, An intuitive approach	W9GR, Dave Hershberger	QST	February 1996	39
Filter variations	Ian Hickman	Electronics World	October 1996	769
Deimensjonering av elliptiske filtre, del 2	OZ7MA, Arne R. Pedersen	OZ	November 1996	624
A new generatiosn of analogue switches	Jack Armios and Tania Chur	Elektor Electronics	September 1989	39
En mikrofonforsterker med muligheter	OZ2UA, Poul Skelmose	OZ	Juli 1992	387
Gratis strøm til alle (mikrofoner)	OZ2UA, Poul Skelmose	OZ	Mars 1995	127
Analog hukommelse	OZ1KOY, Kenneth Pedersen og OZ2ECB, Rico Breving	OZ	Juni 1995	301
Speaker-mike modification to generate a 1750 hz tone burst for european repeater operation		QST	February 1997	74
Build a $60 talking repeater controller	N1KDO, Jeff Otterson and KA1OKQ, Peter Gailunas and N1LTL, Rich Cox	QST	Februar 1997	37
Class D amplifier	J Bareford	Elektor Electronics	April 1989	19
Et enkelt notch filter for audiofrekvenser	LA3JT	Amatørradio	April 1991	24
A terminal unit using switched capacitor filters	G4WIM, TD Forrester	Radio Communication	February 1987	102	Ex G8GIW
Alternative inverter drive	Irving Gottleib	Electronics World	May 1997	433
Build these noise-canceling headphones	Jules Ryckebusch	Electronics Now	September 1997	31
Single-supply op-amps	Phil Darrington	Electronics World	May 1998	413
LF Oscillator	Burr-Brown	4423
LF Oscillator
Camcorder dubber	Ian Hickman	Electronics world	September 1997	730
Nivåmåler	LA7GF Hans	Amatørradio	Februar 1987	46
Easy pocsag signal decoder	Robert	Electronics Now	May 1997	50
Build the call director	John G. Koller	Electronics Now	May 1997	29
Phone line monitor	James Melton	Electronics Now	March 1997	46
Audio gets easier using the new LM4862	Michael A. Covington	Electronics Now	November 1999	39
Interfacing digital audio	Patrick Gaydecki	Electronics World	December 1999	1026
Picturing Schmott's trigger	Bryan Hart	Electronics World	December 1999	1040
FM transceiver til 10 meter	OZ2BB, Chris Bystrup & OZ1BTP Ras Pedersen	OZ	Desember 1998	631
I luften på 2200 meter	OZ5N Steen Nielsen	OZ	Janual 1998	5
Selvbygget HF tranceiver	LA9WJ Håkon Indseth	Amatørradio	Juli/August 1989	196
Low power thrills for less than ten bucks, 50 mW transmitter	W1FB Doug DeMaw	CQ	August 1997	44
Simple 3.5/7MHz CW transmitter		RadCom	May 1998	51