krikori@eniac.seas.upenn.edu (Raffi Krikorian ) (01/24/91)
I'm Interested in building an FM transmitter that would transmit a left and right signal which could be received on a regular FM receiver (i.e. a deadspot between 88 and 108 Mhz). I only need a range of upto 20 ft. Raffi
agb@mentor.cc.purdue.edu (Sam Habegger) (01/26/91)
In article <36152@netnews.upenn.edu> krikori@eniac.seas.upenn.edu (Raffi Krikorian ) writes: > > I'm Interested in building an FM transmitter that would transmit >a left and right signal which could be received on a regular FM >receiver (i.e. a deadspot between 88 and 108 Mhz). I only need a range >of upto 20 ft. > > Raffi DC Electronics P.O. Box 3203 Scottsdale, AZ 85271-3203 phone 1-800-423-0070 has an FM Stereo Transmitter Kit, Catalog Number SFM-II for $19.95. The description says the kit uses the Ba1404 stereo broadcast I.C. and can transmit anywhere within the FM Band (88-108 Mhz). Good Luck!
cameronjames@snoc01.enet.dec.com (James Cameron) (01/31/91)
I built a Stereo FM Transmitter based on the BA1404 chip; it works fine at the kit design voltage of 1.5v, but works even better at 3v. Does anyone have data on this chip? What is it's maximum supply voltage? James Cameron Sydney, Australia cameronjames@snoc01.enet.dec.com
agb@mentor.cc.purdue.edu (Sam Habegger) (02/01/91)
>I built a Stereo FM Transmitter based on the BA1404 chip; it works fine >at the kit design voltage of 1.5v, but works even better at 3v. > >Does anyone have data on this chip? What is it's maximum supply voltage? > The data sheet recomended supply voltage is 1v - 3v, with absolute maximum at 3.6v.
bill@flutter.tv.tek.com (William K. McFadden) (02/02/91)
In article <1991Jan31.101145@snoc01.enet.dec.com> cameronjames@snoc01.enet.dec.com (James Cameron) writes: >I built a Stereo FM Transmitter based on the BA1404 chip; it works fine >at the kit design voltage of 1.5v, but works even better at 3v. >Does anyone have data on this chip? What is it's maximum supply voltage? Running it at 3V is kind of risky. Here's the specs from the Rohm data book: Vcc @ 25C: Min. Typ. Max. Absolute Max. 1V 1.25V 2V 2.5V -- Bill McFadden Tektronix, Inc. P.O. Box 500 MS 58-639 Beaverton, OR 97077 bill@videovax.tv.tek.com, {hplabs,uw-beaver,decvax}!tektronix!videovax!bill Phone: (503) 627-6920 "SCUD: Shoots Crooked, Usually Destroyed"