Vintronics 1w AM / MW mono audio transmitter (show and tell) tested at our studios
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This AM Transmitter operates between 1024KHz and 1600KHz in the Medium Waveband (AM Band) and is designed to be a reliable and stable unit.
It is capable of delivering over 1 watt of RMS power into a short length aerial. It can usually deliver 1.5 watts cleanly driven to 100% modulation.
The Transmitter circuit design employs a Colpitts FET oscillator in a Phase-locked loop circuit for accuracy and ease of frequency selection. It is also very stable and therefore does not drift off frequency. The Phase Lock circuit provides selection in 1KHz steps, so that the unit can be used in either Europe, which has 9KHz spacing between channels, or in the USA and other parts of the World where 10kHz is used between channels. A rugged Power MOSFET is also used on the RF output stage, which drives the output toroid and variable tuning capacitor. High voltage rated components are used in the output section.
Audio modulation is series-derived using a pair of Darlington Power Transistors. These are in turn driven by an audio level control chip which allows the transmitter to achieve maximum modulation at all times, whatever the audio source and nominal level is, within reason. (CD player, mixer, PC etc)
Housed in a Steel box with ABS front and rear panels. Ventilation holes to improve air flow for component cooling. A fan is used on higher output models. Comes with 4.5 metre cable as suitable Aerial.
More information is available from sjvbroadcastservices.com
CAUTION A licence is required to operate this equipment in the UK.
