Adjustable capacitor C10, and coil L1 form a tank circuit that, in combination with Q1, C2, and R1, oscillates at a frequency on the FM band. The center frequency is set by adjusting C10. An electret microphone, M1, picks up an audio signal that is amplified by transistor Q2. The audio signal is coupled via C9 to Q1, which frequency modulates the tank circuit.
The signal is then radiated from the.antenna. The circuit can operate from 9-12 Vdc.
Build your own FM transmitter with no special parts needed
RF Globalnet (press release) SBS chose Rohde & Schwarz because of the company's top technical expertise and long-standing professional support with T-DMB, ATSC 1.0 and . During the evaluation phase, SBS also used Rohde & Schwarz trans
KCRW is a six-station cluster consisting of KCRW, Santa Monica, KDRW, Santa Barbara, KCRU, Oxnard, KCRY, Mojave & KCRI, Indio, and KERW, Los Osos-Baywood Park. Additionally it operates seven low power translator stations in the communities o
Eric Pere: Generally, operate far more efficiently than DTV or DAB transmitters so, the advantages of water cooling aren't as significant in the FM sphere. If a manufacturer ..... Fewer engineers entering the market today do so as
“The uniqueness of this construction,” he says, “is that we've designed a climbing aperture inside the tower that allows workers and material to be transported through the active 19-station auxiliary FM antenna to an ice shield
The manufacturer wrote that the amps are identical to those in certified it makes, and that the transmitters imported and marketed by SCMS “are by all intents and purposes the same models already certified by an FCC approved test lab.&rd
As the new NFL season opens, Radio World takes a special in-depth look at the program where football and engineering meet. It was Jan. 29, 1995 at Joe Robbie Stadium in Miami, Fla., the site of Super Bowl XXIX. The game was a triumph for the Sa
Under conditions involving a clear microwave path, we proved that even very inexpensive IP radios can handle the “Near Perfect” requirements for Livewire AoIP networking. It has also been tested with four Livewire standard streams i
Notably, this occurred at a location with ambient levels higher than normal. Maxson says it remains to be seen if the phenomenon occurs at lower levels. All levels at the site were within FCC RFR limits. This phenomenon was previously experien