Tracking Transmitter Circuit

This tracking transmitter consists of four distinct subassemblies; a free-running multivibrator, a transmit switch, an audio-tone generator, and an FM transmitter. The multivibrator (which produces a pulse width with a pulse separation of 1500 ms) is built around Ql and Q2. The multivibrator output is coupled through R5 to the base of Q3, whose emitter feeds Q4,
Tracking Transmitter Circuit - schematic

which controls the circuit`s transmitter section.


  • Screen Africa (press release)
    The 4kw ONAIR LDMOS FM transmitter (FTC4K) has the same dimensions as the old 1kw mosfet transmitter but is four times higher power than 1kw transmitter. Efficiency of the old 1kw mosfet transmitters was just around 70 per cent it produces more
     30 September 2016
  • Radio World
    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
     29 September 2016
  • Radio World
    Other advantages of the range, adds DB, include an efficiency of more than 70 percent thanks to DB's Green technology, low maintenance costs, high MTBF for and power supply modules and low transport costs. Able to be operated via a web ser
     30 August 2016
  • Radio magazine
    Radio magazine If punishing and eliminating radio pirates were just about preventing interference, we'd want purveyors of cheap LED lights (and other RFI devices that have wiped out far more spectrum than any buccaneer has) to do hard FCC ti
     11 July 2016
  • Radio magazine
    Radio magazine Many educational institutions across the country have begun to realize that students need to be in an environment that will teach them what it's really like to work in an industry, preferably one with up-to-date equipment. Ofte
     7 July 2016
  • Radio World
    This is because most systems from the transmitter to the antenna are frequency-specific. This concept may seem foreign to some radio oadcasters. Generally speaking, today's solid-state , filtering, transmission line and antennas are
     14 April 2016
  • Radio World
    This is a two-translator project; open spaces are for gear that is already in operation for the first translator. The equipment seen here includes, from top, an Omnia.7 processor, Audemat RDS encoder and Broadcast Devices switch controller, used
     5 April 2016
  • Radio World
    The more recent development of solid-state using advanced LDMOS-FET power amplifier technology changed the conversation; the ability to generate higher HD Radio power levels along with FM inside a single transmitter improved the
     17 February 2016
  • Radio World
    Radio World Options WidenAs we have reported, Durst Organization is hoping to establish an transmission platform atop the new One World Trade Center downtown, and is seeking oadcaster commitments. Now the owners of the Empire State Buil
     21 October 2014